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Diffusers Linear Diffusers Square Diffusers Luminaire Diffusers Swirl Diffusers Circular Diffusers Jet Diffusers Air Valves Waterloo 2.0 September 2005 Waterloo

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Page 1: Diffusers Total

DiffusersLinear DiffusersSquare DiffusersLuminaire Diffusers Swirl DiffusersCircular DiffusersJet DiffusersAir Valves

Waterloo 2.0

September 2005

Waterloo

Page 2: Diffusers Total

Waterloo 2.0 2 Tel: +44 (0) 1622 711511

Waterloo

Waterloo Introduction

Waterloo manufactures its range of products in England and Holland. The photograph shows the new factorybuilt for Waterloo in 2003.

Symbols UsedT Maximum Throw 50mm from the ceiling (for air velocity of 0.1m/s) in isothermal conditions (unless otherwise stated)[m]To Maximum Throw (for air velocity of 0.15 m/s) in occupied zone in isothermal conditions (unless otherwise stated) [m]vt Terminal Velocity [m/s]v Air Velocity 25 mm from the grille face [m/s]Lp NR level is Peak Level on NR curves based on SWL ref 10-12 W less 8dB Room Absorbtion [dB]Lw Uncorrected sound level [dB]qv Air Volume [l/s] or [m3/h]Ps Static Pressure [Pa]W Width [mm]H Height [mm]

Diffusers

A complete range of products designed to be installed in various ceiling systems. Most diffusers are made fromaluminium, and can be ordered with or without plenum chambers for easy connection to duct work. Diffuserscan be ordered in customer specified (PPM/G) colours; standard colour is PPM 9010 (20% gloss white).

This range is complemented by the Aircell range of polymer Grilles and Diffusers.

Our equipment is suitable for dry, filtered air conditioning systems. Should this not be the casethen a suitable maintenance regime should be in operation that reflects the site conditions.

Page 3: Diffusers Total

Waterloo 2.0 3 Tel: +44 (0) 1622 711511

Waterloo

Linear DiffusersCS-F, CS-P, CS-S&E, CS-WR Linear Slot Diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4KCS-F, KCS-L Linear Slot Diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8STKCS, STCS Linear Slot Diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10DSL, DSL-D Linear Diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12FCD1, FCD2 Linear Fan Coil Diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14Plenum Chambers Linear Diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Square DiffusersDF, DE, DFA Louvred Face Diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18M300, M450, M500, M600, M625 Aircell Polymer Louvre Face Diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . .362300, 2600 Aircell Polymer Diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38LFF, LFM Laminar Flow Diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42CPD, CPDE Perforated Face Diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46KRCP, KRCPE Perforated Face Diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50MWVP, MWVPD Perforated Face Diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52WPD, MWPD Perforated Face Diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54WID Perforated Face Diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

Luminaire DiffusersLUMDF Luminaire Diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

Swirl DiffusersSDFC, SDFS Circular/Square Fixed Blade Swirl Diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60SDFS-P Perforated Face Fixed Blade Swirl Diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62SDFCH, SDICH, SDACH High Capacity Circular Swirl Diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64SDVS, SDVC Vane Swirl Circular / Square Diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

Circular DiffusersRWI, RWI-R Circular Perforated Face Diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70RWK, RWK-R Circular Plain Face Diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72RWV, RWV-R Circular Plain Face Diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74MC Small Format Circular Diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76WR Large Format Circular Diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78WFO, WFOV Aircell Polymer Floor Diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80

Jet DiffusersWDJ Drum Jet Diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84VS3 Supply Air Nozzles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86RWH, RWH-P Hi-Flo Jet Diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88

Supply and Exhaust ValvesVA, VB, VC Steel Supply and Exhaust Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92RPVB Aircell Polymer Supply and Exhaust Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94

Contents

Page 4: Diffusers Total

Linear Slot DiffusersCS-F CS-P CS-S&E CS-WRIntroductionThe Waterloo small format continuous slot diffuser seriesCS has for many years set the industry standard in termsof highest aerodynamic and acoustic performance. TheCS range is ideally suited to variable volume applicationsdue to its excellent low flow rate air diffusioncharacteristics and high air handling capacity. The novelair pattern control element design allows any air diffusionto vertical projection, without any change in the facialappearance.CS diffusers are suitable for all commercial and industrialprojects requiring single or multislot diffusers for ceilings,bulkheads or sidewall supply and exhaust.Diffusers are manufactured from aluminium alloyextrusions fixed or clipped to cross stays allowing easyremoval of internal vanes and pattern control elements.

Product DescriptionCS-F Wide flanged general purposeCS-P Narrow flange for flush / recess mountingCS-S&E Supply and Exhaust (or dual supply) system

diffuserCS-WR Plank Replacement UnitEnds End capsED Equalising Deflector

Features• High air handling capacity

• Wide dynamic range for perfect VAV systems

• Strong coanda effects for good low flow performance

• Fully adjustable air pattern from horizontal to vertical

• Hidden flow control vanes for consistent facial

appearance

• Continuous joint detail for ceiling integrations

FinishesPPM9006 (RAL 9006 Matt Silver)PPM9010 (RAL 9010 20% Gloss White)PPG9010 (RAL 9010 Gloss White)Other colours available on request

Weights0.8N + 0.7 kg/mN = number of slots

SizesStandard from 1 to 8 slots wide 1500mm long(excluding ends). Continuous diffuser lengths are supplied in sections forbutt jointing on site. (Alignment plates supplied)

Order Example

CS-F/3000/S1/PPM9010/ENDSTypeLengthNº of slotsFinishEnd caps

Type Slots 1 2 3 4 5 6 7 8

CS-FC 76 114 152 190 228 266 304 343E 57 95 133 171 209 247 285 324F 40 79 117 155 193 231 269 307

CS-PC 56 95 133 171 209 247 285 323

E Flush 50 89 127 165 203 241 279 317E Recess 57 96 134 172 210 248 286 324

F 40 79 117 155 193 231 269 307

CS-S & E-FC - 114 152 190 228 266 304 343E - 95 133 171 209 247 285 324

Nº of Slots (Supply or 1 2 3 4 5 6 7Extract) F 40 79 117 155 193 231 269

PB PLS D G

1 slot 34 462 slot 72 843 slot 110 1224 slot 148 1605 slot 186 1986 slot 225 2367 slot 263 2748 slot 301 312

Waterloo

Waterloo 2.0 4 Tel: +44 (0) 1622 711511

2828 18

EF

5

CS-FC

Riveted Plenum Hemmed Plenum

45 -

60

G

1818 18

EF

1.5

CS-PC

81.5

Extract = F - 2

CS-S&E-F

Supply = F

Frame alignment strip

D

CS-F + PLS CS-F + PB

Page 5: Diffusers Total

Waterloo

Waterloo 2.0 5 Tel: +44 (0) 1622 711511

Linear Slot DiffusersCS-F CS-P CS-S&E CS-WR

Special ProductsMore information about these products available on request

Page 6: Diffusers Total

Waterloo 2.0 6 Tel: +44 (0) 1622 711511

WaterlooLinear Slot DiffusersCS-F CS-P CS-S&E

Curved CS unit

750

X

X

StandardDiffusers are supplied with flow controlvanes in lengths up to 750mm (to suitdiffuser length).

SpecialTo provide finer control of the airpattern, flow control vanes may be suppliedin any specified length.

See page 16 for plenum reference

Page 7: Diffusers Total

AIR FLOW RATEl/s per m length

MAXIMUM RADIUSOF DIFFUSION (Horizontal)

Vr = 0.10 m/s (Vt = 0.25 m/s)

MEDIUM RADIUSOF DIFFUSION (Horizontal)

Vr = 0.15 m/s (Vt = 0.5 m/s)

VERTICAL PROJECTIONVt = 0.25 M/S

NR LEVELHorizontal diffusion

& exhaust air

Horizontaldiffusion Exhaust

300

400

500

600

700

25

20

12

12 55

50

50

25

12.5

2.5

10075

25

12.5

6.25

1.25

50

1

2

3

4

8

7

6

5

37.54540

3530

25

20

10

87

6

5

4

3

2

1

12

10

87

6

5

4

3

2

1

15

10

9

8

7

6

5

4

3

20

15

10

9

8

7

6

5

4

3

2

200

100

90

80

70

60

50

40

30

20

PRESSURE DROP (Pa)

Nº OF SLOTS

MINIMUM RADIUSOF DIFFUSION (Horizontal)

Vr = 0.25 m/s (Vt = 0.85 m/s)

Selection Example

(1 Way Throw)

Selection Example

(2 Way Throw)

Linear Slot DiffusersCS-F CS-P CS-S&E

Selection Example CS2/1800Total air flow rate 180 I/s = 100 l/s/m

1 Way ThrowMinimum throw 2.8m (3.5 x 0.8 factor)Maximum throw 7.2m (9.0 x 0.8 factor)Pressure drop 25PaNoise level NR29 (NC32 - 3db length correction)

2 Way ThrowMinimum throw 2.0m (2.5 x 0.8 factor)Maximum throw 5.2m (6.5 x 0.8 factor)Pressure drop 25PaNoise level NR25 (NR28 - 3db length correction)

Selection CriteriaCeiling height 2.75m, increase throw by1m for each 1m increase in ceiling heightHorizontal diffusion is based on a coolingdifferential of 11°C Vertical projection is based on a heatingdifferential of 11°CNR is sound pressure level/Noise CriteriaCurve & based on a room absorption of8dB.Vr = mean room air velocity (m/s)Vt = terminal velocity of supply air jet (m/s)

Performance Nomogram

Length CorrectionsActive Length (m) 0.5 1.25 2.0 2.5 3.0NR Reduction -8 -5 -3 -2 0Throw multiplier 0.45 0.65 0.8 0.9 1.0

Waterloo

Waterloo 2.0 7 Tel: +44 (0) 1622 711511

Page 8: Diffusers Total

Linear Slot DiffusersKCS-F KCS-L

IntroductionThe Waterloo series KCS is a standard alternativeto the infinitely variable CS linear slot diffuser.Available in 1 to 4 slots it comes complete with ablack polymer pattern control element and willprovide either a one or two way horizontaldistribution. Each unit can be supplied with eitherconventional end caps or polymer flat inserts wherea lay-in grid is used.The KCS is suitable for VAV systems or conventionalfan coil systems and can be supplied with aplenum box if required. Lengths are available up to1800mm long in one piece.

Product DescriptionKCS-F Flanged linear slot diffuserKCS-L Recessed frame linear slot diffuserFL End caps (For KCS-F)KPL Polymer end caps (Suitable for KCS-F and

KCS-L)

Features• VAV system compatibility

• One or two way directional throw

• Other frame styles available

• Black pattern control elements

FinishesPPM9010 (RAL 9010 20% Gloss White)Black polymer bladesOther frame colours and anodised finish availableon request

Advantages• Two way variable throw characteristics• Easily adjustable air pattern• Lay-in grid compatible

Weights0.8N + 0.7 kg/mN = number of slots

SizesStandard from 1 to 4 slots wide 1800mm long(excluding ends). Continuous diffuser lengths are supplied in sectionsfor butt jointing on site. (Alignment plates supplied)

Order Example

KCS-2F/1800/PPM9010/FLTypeNº of slotsOuter frame typeLengthFinishEnd caps

KCS C EKCS-1F 75 55KCS-2F 113 93KCS-3F 151 131KCS-4F 189 169

KCS-1L 46 48KCS-2L 84 86KCS-3L 122 124KCS-4L 160 162

Plenum Widths DKCS-1F 46KCS-2F 84KCS-3F 122KCS-4F 160

KCS-1L 46KCS-2L 84KCS-3L 122KCS-4L 160

Waterloo 2.0 8 Tel: +44 (0) 1622 711511

Waterloo

Page 9: Diffusers Total

Linear Slot DiffusersKCS-F KCS-L

Waterloo 2.0 9 Tel: +44 (0) 1622 711511

Selection Example KCS-2F/1800Total air flow rate 180 I/sAir flow rate per metre = 100 l/s/mMinimum throw 2.8m (3.5 x 0.8 factor)Maximum throw 7.2m (9.0 x 0.8 factor)Pressure drop 25PaNoise level NC29 (NC32 - 3db lengthcorrection)

Selection CriteriaCeiling height 2.75mTemperature differential -11°C NC is sound pressure level/Noise CriteriaCurve & based on a room absorption of8dB.Vr = mean room air velocity (m/s)Vt = terminal velocity of supply air jet (m/s)

Please note that for heatingapplications the KCS diffusers arelimited to a maximum supply airtemperature of 50°C

Performance Nomogram

AIR FLOW RATEl/s per m length

MAXIMUMVr = 0.10 m/s

(Vt = 0.25 m/s)

RADIUS OF DIFFUSIONMINIMUM

Vr = 0.25 m/s(Vt = 0.85 m/s)

NR LEVELHorizontal diffusion

& exhaust air

HorizontalDiffusion Exhaust

300

25

20

12

55

50

50

20

30

10 5

10

15

25

3850

5

10075

1

2

3

4

4540

3530

25

20

10

87

6

5

4

3

2

1

15

10

9

8

7

6

5

4

3

200

100

90

80

70

60

50

40

30

20

PRESSURE DROP (Pa)

Nº OF SLOTS

Waterloo

Length CorrectionsActive Length (m) 0.5 1.25 2.0 2.5 3.0+

NR Adjustment -8 -5 -3 -2 0

Throw Multiplier 0.45 0.65 0.8 0.9 1.0

Page 10: Diffusers Total

Waterloo 2.0 10 Tel: +44 (0) 1622 711511

Linear Slot DiffusersSTKCS STCS

IntroductionThe Waterloo series STKCS / STCS is a one ortwo slot diffuser with a front face plate designedto be mounted into 600mm and 1200mmmodular T-Bar ceiling systems. The front faceplate on both the one and two slot are the samesize to provide a uniform facial appearance. Theunits are supplied with their own plenum boxesas standard.

Product DescriptionSTKCS-1 Single slot diffuser - one way throw

with a black polymer patterncontrol element

STKCSI-1 Single slot diffuser - one way throw with 6mm thermal/acoustic lining in the plenum

STCS-2 Two slot diffuser - two way throwwith a black aluminium patterncontrol element

STCSI-2 Two slot diffuser - two way throw with 6mm thermal/acoustic liningin the plenum

Features• Common faceplate width for one and two slot

• Integrated plenum unit

• Sizes to suit 600, 1200 & 1500mm T-Bar

ceiling systems

• High induction characteristics

• VAV compatible

• Modular design

FinishesFront face plate PPM9010 - 20% Gloss WhiteOther colours available on request

WeightsSTCS-1 4.0 kg/m

STKCS-1 3.7 kg/m

STCS-2 5.7 kg/m

STKCS-2 5.0 kg/m

SizesSee tables

Order Example

STKCS-2/1195/PPM9010/980/125/1TypeNo. of slotsDiffuser lengthFinishPlenum lengthPlenum spigot diameterNº of spigots

Waterloo

STKCS-2Nom. L E ØD

420 - 700 275 1 x 125

840 - 1260 275 1 x 160

1400 - 1540 275 2 x 125

1680 - 1820 275 2 x 160

STKCS-1Nom. L E ØD

420 - 700 240 1 x 100

840 - 1260 240 1 x 125

1400 - 1540 240 2 x 100

1680 - 1820 240 2 x 125

STCS-2

275

140 50

øD10

0

95100

STKCSI-1

240

100 50

øD10

0

95100

Nom. L

Nom. L + 5

Nom. W - 5

95

ST(K)CS-1

Page 11: Diffusers Total

Waterloo 2.0 11 Tel: +44 (0) 1622 711511

Linear Slot DiffusersSTKCS STCS

Performance Table

Selection ExampleSTKCS-1/1400

Air Volume 50 I/sThrow 4.0 mPressure Drop 23 PaNoise Level NR 20

Selection Criteria

Ceiling Height 2.7mTemperature Differential -11KAverage room velocity Vr 0.15m/sNR is sound pressure level/Noise Criteria Curvebased on a room absorption of 8dB

All selections include the plenum

STKCS Plenum length (mm)

m3/h l/sW 560 700 840 980 1120 1260 1400 1540

Slots 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2

54 15T 2.8 2.3 2.0 1.7 1.5 1.3 1.2 1.1Ps 14 9 7 5 4 3 2 1Lp - - - - - - - -

72 20T 3.4 2.8 2.5 2.2 2.0 1.8 1.6Ps 18 14 10 8 7 6 5Lp - - - - - - -

108 30T 3.9 3.8 3.2 2.8 2.6 2.3 2.1Ps 11 21 17 14 12 9 7Lp - 20 - - - - -

126 35T 5.2 3.9 4.1 3.6 3.2 2.8 2.6Ps 18 11 23 18 16 14 11Lp 22 - 20 - - - -

144 40T 4.9 3.9 3.8 3.5 3.1Ps 16 11 21 17 15Lp 21 - - - -

180 50T 5.9 5.3 3.9 4.0 3.6Ps 24 14 11 23 18Lp 25 20 - 20 -

198 55T 5.6 4.6 3.9 3.4Ps 21 13 11 10Lp 24 20 - -

126 65T 5.4 4.6 3.9 3.5Ps 19 13 11 10Lp 23 20 - -

252 70T 5.2 4.5 3.9 3.5Ps 18 13 11 10Lp 22 20 - -

306 85T 5.6 4.9 4.4Ps 21 16 13Lp 24 21 20

360 100T 5.3Ps 18Lp 22

For exhaust applications, please multiply the above pressure drops (Ps) by 1.2,and add 3dB to the noise levels.

Waterloo

Page 12: Diffusers Total

Waterloo 2.0 12 Tel: +44 (0) 1622 711511

Linear DiffusersDSL DSL-D

IntroductionThe Waterloo large format linear diffusers seriesDSL are ideal for most commercial supply andexhaust systems and integrate well with ceiling tileand lighting layouts. The clear design provides anextremely low air resistance characteristic and thismakes the diffuser ideal for any fan coil orinduction system which is pressure sensitive. Singleor multislot diffusers are available with fixed 1 or 2way air patterns; multislot 2 way diffusers may beadjusted to suit site conditions by changing vanes.The diffusers are constructed from aluminium alloyextrusions fixed or clipped to cross stays. Internalvanes are removable for installation, access orcleaning.

Product DescriptionDSL Large format one way dischargeDSL-D Large format two way dischargeEnds End capsOBSS Allen key operated opposed

blade damperED Equalising deflector

Features• Ultra low pressure loss characteristics suited to

fan coil and induction supply systems• Single or multislot to suit most air handling

requirements• Clean design for practical integration with

lighting or ceiling systems• Fixed 1 or 2 way pattern to prevent unwanted

adjustment of air diffusion

FinishesPPM9006 (RAL 9006 Matt Silver)PPM9010 (RAL 9010 20% Gloss White)PPG9010 (RAL 9010 Gloss White)Other colours available on request

Weights0.4N + 0.6 kg/mN = number of slots

SizesFrom 1 to 8 slots wide1500mm long (excluding ends) Continuous diffuser lengths are supplied in sectionsfor butt jointing on site (Alignment plates supplied)

*Please specify number of slots in each direction

Order Example

DSL/3000/S1/PPM9010/ENDSTypeLengthNº of slotsFinishEnd caps

Waterloo

Type A B CDSL-1 46 89 70

DSL-2 84 127 108

DSL-3 122 165 146

DSL-4 160 203 185

DSL-5 198 241 222

DSL-6 237 279 260

DSL-7 275 317 298

DSL-8 313 355 336

Type A B CDSL-D11 84 154 137

DSL-D12 122 192 175

DSL-D22 160 230 213

DSL-D23 198 268 251

DSL-D33 237 306 289

DSL-D34 275 345 327

DSL-D44 313 382 365

35 -

60

DSL

25CB

A

DSL-D

25

BC

67

A

DSL-D + OBSS + Plenum

Page 13: Diffusers Total

Waterloo 2.0 13 Tel: +44 (0) 1622 711511

Linear DiffusersDSL DSL-D

Selection ExampleDSL/2000/S4Total air flow rate 400 I/sAir flow rate per metre = 200 l/s/mMinimum throw 6.8m (8.5 x 0.8 factor)Maximum throw 12m (15.0 x 0.8 factor)Pressure drop 13PaNoise level NR22 (NR25 - 3db lengthcorrection)

Selection CriteriaFrom a ceiling height of 3.0m, increase throwby 300mm for each 300mm increase in ceilingheight.Horizontal diffusion is based on a coolingdifferential of 11°C NR is sound pressure level based on a roomabsorption of 8dB.Vr = mean room air velocity (m/s)Vt = terminal velocity of supply air jet (m/s)

PivotLine

AIR FLOW RATEl/s per m length

NC LEVELHorizontal diffusion & exhaust air

300

400

500

600

700

20

10

5

1

50

1

2

3

4

8

7

6

5

30

40

50

2010

20

30

5

3

2

5

10

20

200

100

90

80

70

60

50

40

30

20

PRESSURE DROP (Pa)

Nº OF SLOTS

MAXIMUM RADIUSOF DIFFUSION (Horizontal)

Vr = 0.10 m/s (Vt = 0.25 m/s)

MINIMUM RADIUSOF DIFFUSION (Horizontal)

Vr = 0.25 m/s (Vt = 0.85 m/s)

Performance Nomogram

Waterloo

DSL Exhaust Corrections

Pressure Loss Multiply x 2

Noise Level +5 dB

Equalizing Deflector Corrections

Diffuser Length (m) 0.5 0.75 1.0 1.5

Throw Multiplier usingED blades 0.33 0.42 0.48 0.54

Length Corrections

Active Length (m) 0.5 1.25 2.0 2.5 3.0NR Correction -8 -5 -3 -2 0Throw Multiplier 0.45 0.65 0.8 0.9 1.0

Page 14: Diffusers Total

Waterloo 2.0 14 Tel: +44 (0) 1622 711511

Linear Fan Coil DiffusersFCD1 FCD2

IntroductionThe Waterloo linear diffuser series FCD has beendeveloped as an alternative form of continuous airdistribution product for fan coil or variable airvolume applications.Available with either one or two way coreconfigurations, the blade profile is specificallydesigned to produce jet throw characteristics with ahigh induction rate, so prompting rapid mixing anddiffusion within the room air.The core sections of the diffusers are retained withquick release spring clips and safety cords to alloweasy removal during installation and service access.

Product DescriptionFCD1 One way fan coil diffuserFCD2 Two way fan coil diffuserLH Left hand end cap for FCD1RH Right hand end cap for FCD1Ends Pair of end caps

Features• High induction rate

• Quick release cores

• Wide size range

• Tile replacement units available

FinishesPPM9006 (RAL 9006 Matt Silver)PPM9010 (RAL 9010 20% Gloss White)PPG9010 (RAL 9010 Gloss White)Other colours available on request

WeightsSee Table

Sizes150mm to 400mm wide in 50mm incrementsSingle lengths of 500mm up to 1500mm,continuous applications are supplied in 1200mmlengths with alignments strips.

Order Example

FCD1/3000x250/PPM9010/ENDSTypeLengthWidthFinishEnd caps

Waterloo

Nom.Width

WdX Y Weight

(Kg/m)FCD1 FCD2 FCD1 FCD2

150 151 160 164 186 194 2.3

200 201 210 214 236 244 2.8

250 251 260 264 286 294 3.3

300 301 310 314 336 344 3.8

350 351 360 364 386 394 4.3

400 401 410 414 436 444 4.8

FCD1Y

56

WdX

FCD2Y

56WdX

Y

Nom. L + 30Nom. L

(FCD1)

Nom. L + 12

Face View

Left hand end capThrow direction Right hand end cap

Page 15: Diffusers Total

Waterloo 2.0 15 Tel: +44 (0) 1622 711511

Linear Fan Coil DiffusersFCD1 FCD2

Performance Tables

room air velocity (Vr) of 0.25 m/s with acooling differential of 10°C. For isothermalor 10°C heating conditions apply a factor of1.15 to the throws.To avoid draughts in the occupied zone, theselection of diffuser sizes and the resultingthrows should be related to the ceiling height.The following table provides a generalrecommendation for maximum throwselections at various ceiling heights.

Selection CriteriaThe following tabulated data is based ontests with a 1.2m diffuser. Correction factorsshould be applied to the acoustic and throwdata for continuous lengths.Noise data is valid for one or two waythrow configurations and is expressed interms of NR level with a room absorptionfactor of 8dB.Throws are based on a terminal velocity of0.5 m/s, corresponding to an average

Waterloo

FCDSupply Air Volume per metre

Nom. H 150 200

m3/h/m l/s/m

1 W

ay T

hrow

2 W

ay T

hrow

Ps S

uppl

y

Ps E

xtra

ct

Lp (N

R)

1 W

ay T

hrow

2 W

ay T

hrow

Ps S

uppl

yPs

Ext

ract

Lp (N

R)

270 75 3.0 2.1 2 4 -360 100 4.2 3.1 4 7 - 3.3 2.4 - - -450 125 5.3 4.3 6 11 20 4.4 3.2 3 6 -540 150 6.5 5.5 8 15 25 5.3 4.1 4 8 20630 175 7.9 6.8 11 20 30 6.4 5.0 6 11 24720 200 9.2 7.6 14 27 33 7.4 6.1 8 15 28810 225900 250990 275

FCDSupply Air Volume per metre

Nom. H 250 300

m3/h/m l/s/m1

Way

Thr

ow

2 W

ay T

hrow

Ps S

uppl

y

Ps E

xtra

ct

Lp (N

R)

1 W

ay T

hrow

2 W

ay T

hrow

Ps S

uppl

y

Ps E

xtra

ct

Lp (N

R)

432 120 3.4 2.5 2 3 -504 140 4.1 2.9 3 4 -576 160 4.8 3.5 3 5 20 4.2 2.9 2 4 -648 180 5.6 4.1 4 6 23 4.8 3.4 3 5 20720 200 6.2 4.7 5 8 25 5.4 3.9 3 6 23810 225 7.2 5.5 6 10 28 6.2 4.6 4 8 26900 250 7.9 6.4 7 12 31 7.1 5.4 5 10 29990 275 9.1 7.2 9 15 33 7.8 6.2 6 12 311080 300 10.0 8.5 11 18 35 8.7 7.0 7 14 33

FCDSupply Air Volume per metre

Nom. H 350 400

m3/h/m l/s/m

1 W

ay T

hrow

2 W

ay T

hrow

Ps S

uppl

y

Ps E

xtra

ct

Lp (N

R)

1 W

ay T

hrow

2 W

ay T

hrow

Ps S

uppl

y

Ps E

xtra

ct

Lp (N

R)

792 220 5.5 3.9 3 6 22864 240 6.0 4.4 3 7 25936 260 6.5 4.8 4 8 27 6.0 4.3 3 6 241008 280 7.0 5.5 4 9 29 6.5 4.8 3 7 261080 300 7.8 5.9 5 11 30 7.0 5.2 4 8 281170 325 8.5 6.8 6 13 32 7.6 6.0 4 10 301260 350 9.0 7.3 7 14 34 8.7 6.5 5 11 321350 375 10.0 8.3 8 16 36 9.2 7.3 6 13 331440 400 9.8 7.9 6 15 35

Length Corrections

Active Length (m) 0.5 1.0 2.0 2.5 3.0NR Correction -4 -1 +2 +3 +5Throw Multiplier 0.7 0.8 1.1 1.25 1.5

Throw Recommendations

Ceiling Height (m) 2.5 2.7 3.0 3.5 4.0Max Throw (m) 4.0 5.5 6.5 9.5 12.0

Page 16: Diffusers Total

IntroductionCorrect selection and sizing ofdistribution plenum chambers andneck reducers is critical becauseterminal air resistance is very lowrelative to the distribution ductworkresistance. It is thereforerecommended that whenever possibleterminals are served by low velocitystub ducts from branch ductingsystems fitted with correct balancingcontrols.Where it is necessary to specify anduse plenums a generous allowancefor commissioned noise generationshould be made. A similar effectresults from use of neck reducers withcircular duct connections because thereduced duct area will causegenerally higher velocities and henceincreased risk of noise generation.

Product DescriptionPBHL High-line Plenum chamberPBLL Low-line Plenum chamberSE Side Entry spigotTE Top Entry spigotEE End Entry spigotCC Circular connectionRC Rectangular connectionLINED 6mm Type “O” fire rated

acoustic liningBAFFLE Perforated plate for more

even air flow to diffuser

Waterloo 2.0 16 Tel: +44 (0) 1622 711511

Linear DiffusersPlenum Chambers

Control Options

Waterloo

High-line plenum chamber Low-line plenum chamber

FDCCord operated flapdamper for mountingwithin circular spigots toplenum chambers.

FDQFlap damper withexternal quadrantcontrol for mountingwithin circular spigotsto plenum chambers.

OBCOCord operatedopposed bladedamper forinstallation withinsquare or rectangularplenum spigots.

OBSS / EDStandard opposedblade damper fordiffuser or ductmounting

Recommended Max Air Volume for NR35 Basedon Recommended Spigot Sizes

Diameter 100 125 160 200 250 315 400l/s 28 42 70 100 165 260

Order Example

PBHL/CSF/1200 x 250 x 250/SE/150/2CC/OBSS/LinedTypeDiffuser TypePlenum Chamber LengthPlenum Chamber WidthPlenum Chamber HeightEntrySpigot SizeSpigot ConnectionsOptionOption

InstallationThe plenum boxes and neckreducers are supported by 4 droprods through a locating holepositioned near each corner.

When ordering plenum chambersplease specify length width &height, spigot size and position(top or side entry) and controloptions. Please note that theplenum height should in general be100mm greater that the spigotdiameter (side entry applications).

Page 17: Diffusers Total

Waterloo 2.0 17 Tel: +44 (0) 1622 711511

Linear DiffusersPlenum Performance Nomogram

54

3

2

1

Pivo

tLin

e

Pivo

tLin

e

450

500

600

20

64

2

10

1

125Ø

200Ø

250Ø

315Ø

400Ø

500Ø

160Ø

100

150

200

250

400

450

500

600

300

350

1000

900

800

350

300

700

600

500

450

400

250

200

150

100

600

500

450

200

250

300

350

400

100

400

350

3008 slot

250

200

150

100

50

40

7 slot

6 slot

5 slot

4 slot

3 slot

2 slot

1 slot

50

60

70

8090

100

150

200

250

300

350

400450500

600

Spigotdiameter

(mm)

Air flowrate (l/s)

Spigot airvelocity(m/s)

Diffuserpressureloss (Pa)

Width(mm)

Height(mm)

Plenum dimensions

Width(mm)

Height(mm)

Rectangularor square spigot

Stan

dard

CS

Slot

Wid

ths

Spigot Air VelocitySelection Guidem/s NR2.0 202.5 253.0 303.5 354.0 40

Example

Selection ExampleUsing the CS example from page 5, we havea diffuser handling 180 l/s total with apressure drop of 25 Pa. Projecting from thisvolume through the diffuser pressure loss, thenpivot on the plenum dimensions to suit thediffuser 2 slot width, which gives a minimumplenum height of approx 280mm. Draw a linefrom the air flow selection point through therequired spigot air velocity and read off the

nearest standard spigot size. In this examplethe spigot diameter exceeds the selectedplenum height, so the height now becomes315+100 = 415mm.Alternatively, to maintain the original height,select a suitably sized rectangular spigot (300x 200 in the example) or use multiple circularspigots.

Performance Nomogram

Waterloo

Page 18: Diffusers Total

Waterloo 2.0 18 Tel: +44 (0) 1622 711511

Louvred Face DiffusersDF DE DFA

Order Example

DF-41/300x300/PPM9010/OBSSTypeDuct widthDuct heightFinishDamper

Nominal + 2 i/s stack

Nominal - 16 o/s damper

DF-T8 Frame

OBSS damperOperated by screwdriver after

removing core. Suitable for all types

OBLL damperLever operation at diffuser face.

Suitable for core 41 only

8

DF-T16 Frame

16

Waterloo

DF - T16 and DF - T8

5

75

Nom. + 145

Nom. - 3Nom. + 75

DF

45

Nom. - 6

IntroductionThe Waterloo series D multicone diffusers, constructed from aluminiumalloy extrusions with mitred and welded/cleated frames, are ideal formost commercial projects requiring high quality diffusers forintegration with a variety of ceiling types. The range is available with5 frame styles and 14 different air pattern control core designs forvertical and horizontal diffusion.

Product DescriptionDF Flanged horizontal blow diffuserDF-T8 8mm Drop tegular tile replacement, core

41 only, 375 & 450mm neck sizesDF-T16 16mm drop tegular tile replacement, core

41 only, 375 & 450 square necksDE Recessed frame horizontal blow diffuserDFA Flanged adjustable diffuser for horizontal or

vertical projection (4 way only)OBSS Opposed blade damperOBLL Lever operated damper via the diffuser facePBD Plenum boxNR/D Top entry neck reducer

Features• Five frame styles for integration with most ceilings• 14 core styles to suit required air pattern• Lightweight aluminium construction• Fixed or adjustable patterns• Suits 300, 500 ,600 & 1200 ceiling grid systems

FinishesPPM9006 (RAL 9006 Matt Silver)PPM9010 (RAL 9010 20% Gloss White)PPG9010 (RAL 9010 Gloss White)Other colours available on request

WeightsDF/DE/DFA 12.5 kg/m2 face areaOBSS/ED 9.5 kg/m2 face area

SizesSeries DF/DE Minimum size - 150 x 150 duct size

Maximum size - 1200 x 600 duct size

Series DF-T8/T16 Miniumum size - 375 x 375 duct size(500mm tile replacement)Maximum size - 450 x 450 duct size (600mm tile replacement)

Series DFA Minimum size - 150 x 150 duct sizeMaximum size - 600 x 600 duct size

Standard increments of 75mm only

Nom. + 75

Nom. + 74

Nom.

45

60

DE

DFANom. + 73

784.

8

12

Nom. + 38

Nom.

Page 19: Diffusers Total

Waterloo 2.0 19 Tel: +44 (0) 1622 711511

Louvred Face DiffusersDF DE

Performance Tables

-1.0 - 1.5

34

-1.0 - 2.0

76

-1.5 - 2.5

135

-2.0 - 3.5

211

222.0 - 4.0

304

150x

150

225x

225

300x

300

DF DE

9

Total pressuredrop (Pa)

Lw

l/sMin - Max (m)

-1.0 - 2.0

45

-1.5 - 2.5

101

202.0 - 3.5

180

242.0 - 4.5

282

282.5 - 5.0

40515

Lw

l/sMin - Max (m)

-1.5 - 2.5

56

-2.0 - 3.5

127

252.0 - 4.5

225

292.5 - 5.5

352

333.5 - 6.5

50623

Lw

l/sMin - Max (m)

-1.5 - 3.0

68

232.0 - 4.0

152

292.5 - 5.0

270

333.5 - 6.5

422

364.0 - 8.0

60833

Lw

l/sMin - Max (m)

192.0 - 3.5

79

272.0 - 4.5

177

323.0 - 6.0

315

374.0 - 7.5

492

404.5 - 9.0

70943

Lw

l/sMin - Max (m)

375x

375

450x

450

SupplyCore 41Core 31

-1.5 - 2.5

34

-2.0 - 4.0

76

-2.5 - 5.5

135

-3.5 - 6.5

211

-3.5 - 7.0

304

150x

150

225x

225

300x

300

DF DE

9

Total pressuredrop (Pa)

Lw

l/sMin - Max (m)

-2.0 - 3.5

45

202.5 - 5.5

101

233.5 - 6.5

180

254.5 - 8.5

282

255.5 - 10.0

40515

Lw

l/sMin - Max (m)

202.0 - 4.5

56

253.5 - 6.5

127

284.5 - 8.5

225

305.5 - 11.0

352

356.5 - 13.0

50623

Lw

l/sMin - Max (m)

242.5 - 5.5

68

294.0 - 8.0

152

325.0 - 10.5

270

346.5 - 13.5

422

357.5 - 16.0

60833

Lw

l/sMin - Max (m)

283.0 - 6.0

79

324.5 - 9.0

177

356.5 - 12.0

315

377.5 - 15.0

492

409.0 - 18.0

70943

Lw

l/sMin - Max (m)

375x

375

450x

450

SupplyCore 11

-1.0 - 2.0

34

-1.5 - 2.5

76

-2.0 - 3.5

135

-2.5 - 4.5

211

212.5 - 6.0

304

150x

150

225x

225

300x

300

DF DE

9

Total pressuredrop (Pa)

Lw

l/sMin - Max (m)

-1.0 - 2.5

45

202.0 - 3.5

101

232.5 - 5.0

180

253.0 - 6.0

282

273.5 - 7.5

40515

Lw

l/sMin - Max (m)

201.5 - 3.0

56

252.5 - 5.0

127

283.0 - 6.0

225

304.0 - 7.5

352

324.5 - 9.0

50623

Lw

l/sMin - Max (m)

242.0 - 3.5

68

292.5 - 5.5

152

323.5 - 7.5

270

345.0 - 9.5

422

355.5 - 11.0

60833

Lw

l/sMin - Max (m)

282.0 - 4.5

79

323.0 - 6.0

177

354.5 - 8.5

315

375.5 - 11.0

492

396.5 - 13.0

70943

Lw

l/sMin - Max (m)

375x

375

450x

450

SupplyCore 21

1.0 - 2.034

1.0 - 2.076

1.5 - 3.0135

2.0 - 3.5211

2.5 - 5.0304

150x

150

225x

225

300x

300

DF DE

9

Total pressuredrop (Pa)

- - - - 21Lw

l/sS Min - Max (m)L Min - Max (m) 1.0 - 2.0 1.0 - 2.5 2.0 - 3.5 2.0 - 4.0 3.5 - 6.5

1.0 - 2.045

1.0 - 2.5101

2.0 - 4.0180

2.0 - 4.5282

2.5 - 5.0405

15

- 20 23 25 27Lw

l/sS Min - Max (m)L Min - Max (m) 1.0 - 2.0 2.0 - 3.5 2.0 - 4.5 2.5 - 5.0 3.5 - 7.0

1.0 - 2.056

2.0 - 3.5127

2.0 - 4.5225

2.5 - 5.5352

3.5 - 6.5506

23

20 25 28 30 32Lw

l/sS Min - Max (m)L Min - Max (m) 1.5 - 2.5 2.0 - 4.0 2.5 - 5.0 3.5 - 6.0 4.0 - 8.0

1.5 - 2.563

2.0 - 4.5152

2.5 - 5.0270

3.5 - 6.5422

4.0 - 8.0608

33

24 29 32 34 35Lw

l/sS Min - Max (m)L Min - Max (m) 2.0 - 3.5 2.5 - 5.0 3.5 - 6.5 4.0 - 8.0 5.0 - 10.0

2.0 - 3.579

2.5 - 4.5177

3.0 - 6.0315

4.0 - 7.5492

4.5 - 9.0709

43

28 32 35 37 39Lw

l/sS Min - Max (m)L Min - Max (m) 2.0 - 4.0 2.5 - 6.0 4.0 - 7.5 5.0 - 9.5 6.0 - 11.5

375x

375

450x

450

SupplyLL

S

S = Short side throwL = Long side throw

Selection ExampleDF41/300x300Air flow rate 225 l/sThrow 2.0 - 4.5mTotal Pressure Loss 23 PaNoise level NC25

Selection CriteriaCeiling height 2.7 mTemperature differential -10KRadius of diffusion - Minimum and maximumthrow which results in an average airvelocity within the occupied zone of0.25m/s and 0.10m/s respectively.NC level = peak level on noise criteriacurves based on Sound Power Level less8dB room absorption

Exhaust & OBSS corrections

Supply diffuser + 0dB Pa x 1.0Supply diffuser + OBSS + 3dB Pa x 1.0Exhaust diffuser + 3dB Pa x 1.1Exhaust diffuser + OBSS +13dB Pa x 1.15

For our full range of sizes please refer to the following pages

Waterloo

Page 20: Diffusers Total

Waterloo 2.0 20 Tel: +44 (0) 1622 711511

Louvred Face DiffusersDF DE core 11

Selection ExampleDF11/300x300Air flow rate 225 l/sThrow 4.5 - 8.5mTotal Pressure Loss 15 PaNoise level NC23

Selection CriteriaCeiling height 2.7 mTemperature differential -10KRadius of diffusion - Minimum and maximumthrow which results in an average airvelocity within the occupied zone of0.25m/s and 0.10m/s respectively.NC level = peak level on noise criteriacurves based on Sound Power Level less8dB room absorption

Exhaust & OBSS corrections

Supply diffuser + 0dB Pa x 1.0Supply diffuser + OBSS + 3dB Pa x 1.0Exhaust diffuser + 3dB Pa x 1.1Exhaust diffuser + OBSS +13dB Pa x 1.15

Performance Table

-1.5 - 2.5

34

-2.0 - 4.0

76

-2.5 - 5.5

135

-3.5 - 6.5

211

-3.5 - 7.0

304

150x

150

225x

225

300x

300

DF DE

9

Total pressuredrop (Pa)

Lw

l/sMin - Max (m)

-2.0 - 3.5

45

202.5 - 5.5

101

233.5 - 6.5

180

254.5 - 8.5

282

255.5 - 10.0

40515

Lw

l/sMin - Max (m)

202.0 - 4.5

56

253.5 - 6.5

127

284.5 - 8.5

225

305.5 - 11.0

352

356.5 - 13.0

50623

Lw

l/sMin - Max (m)

242.5 - 5.5

68

294.0 - 8.0

152

325.0 - 10.5

270

346.5 - 13.5

422

357.5 - 16.0

60833

Lw

l/sMin - Max (m)

283.0 - 6.0

79

324.5 - 9.0

177

356.5 - 12.0

315

377.5 - 15.0

492

409.0 - 18.0

70943

Lw

l/sMin - Max (m)

375x

375

450x

450

204.0 - 8.0

413

204.5 - 8.5

540

305.5 - 10.0

551

306.0 - 11.0

720

356.5 - 13.0

689

357.0 - 14.0

900

407.0 - 14.0

827

408.5 - 17.0

1080

409.5 - 18.5

964

4510.0 - 19.0

1260

525x

525

600x

600

SupplyCore 11

Waterloo

Page 21: Diffusers Total

Waterloo 2.0 21 Tel: +44 (0) 1622 711511

Louvred Face DiffusersDF DE core 12

Selection ExampleDF12/450x150Air flow rate 169 l/sThrow 4.0 - 8.0mTotal Pressure Loss 23 PaNoise level NC25

Selection CriteriaCeiling height 2.7 mTemperature differential -10KRadius of diffusion - Minimum and maximumthrow which results in an average airvelocity within the occupied zone of0.25m/s and 0.10m/s respectively.NC level = peak level on noise criteriacurves based on Sound Power Level less8dB room absorption

Exhaust & OBSS corrections

Supply diffuser + 0dB Pa x 1.0Supply diffuser + OBSS + 3dB Pa x 1.0Exhaust diffuser + 3dB Pa x 1.1Exhaust diffuser + OBSS +13dB Pa x 1.15

Performance Table

-2.0 - 3.5

51

-2.5 - 4.0

67

-3.0 - 5.0

101

203.5 - 5.5

118

204.0 - 6.0

135

225x

150

300x

150

450x

150

DF DE

9

Total pressuredrop (Pa)

Lw

l/sMin - Max (m)

-2.0 - 4.5

68

202.5 - 5.0

90

203.0 - 7.0

135

253.5 - 7.5

158

254.0 - 8.0

18015

Lw

l/sMin - Max (m)

232.5 - 5.5

84

253.0 - 6.0

113

254.0 - 8.0

169

304.5 - 9.0

197

305.0 - 10.0

22523

Lw

l/sMin - Max (m)

273.5 - 6.5

101

304.0 - 7.0

135

305.0 - 10.0

202

355.5 - 10.5

236

356.0 - 11.0

27033

Lw

l/sMin - Max (m)

304.0 - 7.5

118

354.5 - 8.0

158

356.0 - 11.0

236

-2.5 - 4.5

84

375x

150

202.7 - 6.0

113

253.5 - 7.0

140

304.5 - 8.5

169

355.5 - 10.0

197

356.5 - 12.0

275

357.0 - 13.0

31543

Lw

l/sMin - Max (m)

525x

150

600x

150

-2.5 - 5.0

101

-3.0 - 5.5

127

253.0 - 6.0

135

253.5 - 6.5

169

304.0 - 8.0

169

304.5 - 8.5

211

354.5 - 9.0

202

355.0 - 9.5

253

355.0 - 10.5

236

355.5 - 11.0

295

300x

225

375x

225

-3.5 - 6.0

153

254.0 - 7.0

203

305.0 - 9.0

253

355.5 - 10.0

303

356.0 - 11.5

354

450x

225

204.0 - 7.0

177

204.5 - 8.0

203

254.5 - 8.0

237

255.0 - 9.0

271

305.5 - 10.0

295

306.0 - 12.0

337

356.0 - 12.0

354

357.0 - 14.0

404

407.0 - 15.0

413

408.0 - 16.0

472

525x

225

600x

225

SupplyCore 12

-2.5 - 6.0

169

-3.0 - 6.5

203

-3.5 - 7.0

236

-4.0 - 8.0

271

-3.0 - 6.5

253

375x

300

450x

300

525x

300

9

Total pressuredrop (Pa)

Lw

l/sMin - Max (m)

244.0 - 8.0

225

254.5 - 9.0

270

255.0 - 10.0

315

256.0 - 11.0

360

254.5 - 9.0

33815

Lw

l/sMin - Max (m)

295.0 - 10.0

281

305.5 - 11.0

338

306.0 - 12.0

394

307.0 - 13.0

441

305.5 - 11.0

42223

Lw

l/sMin - Max (m)

336.0 - 12.0

338

356.5 - 13.0

405

357.0 - 15.0

473

358.0 - 16.0

540

356.5 - 13.0

50633

Lw

l/sMin - Max (m)

367.0 - 13.5

394

407.5 - 15.0

473

408.0 - 16.0

551

409.0 - 18.0

630

407.5 - 15.0

59043

Lw

l/sMin - Max (m)

600x

300

450x

375

-3.5 - 7.0

296

-4.0 - 8.0

339

305.0 - 10.0

394

256.0 - 11.0

450

356.0 - 12.0

492

307.0 - 13.0

562

407.0 - 14.0

591

358.0 - 16.0

674

408.0 - 16.0

689

409.0 - 18.0

788

525x

375

600x

375

-3.0 - 7.0

354

305.0 - 9.5

472

356.0 - 12.0

591

407.0 - 14.5

709

408.5 - 16.0

827

525x

450

-4.0 - 8.0

406

-3.0 - 8.5

474

306.0 - 11.0

540

306.0 - 11.0

629

357.0 - 13.0

675

357.0 - 14.0

785

408.0 - 16.0

810

409.0 - 18.0

942

409.0 - 18.0

945

4010.0 - 20.0

1103

600x

450

600x

525

Waterloo

Page 22: Diffusers Total

Waterloo 2.0 22 Tel: +44 (0) 1622 711511

Louvred Face DiffusersDF DE core 13

Selection ExampleDF13/450x150Air flow rate 169 l/sThrow 4.0 - 7.5mTotal Pressure Loss 23 PaNoise level NC27

Selection CriteriaCeiling height 2.7 mTemperature differential -10KRadius of diffusion - Minimum and maximumthrow which results in an average airvelocity within the occupied zone of0.25m/s and 0.10m/s respectively.NC level = peak level on noise criteriacurves based on Sound Power Level less8dB room absorption

Exhaust & OBSS corrections

Supply diffuser + 0dB Pa x 1.0Supply diffuser + OBSS + 3dB Pa x 1.0Exhaust diffuser + 3dB Pa x 1.1Exhaust diffuser + OBSS +13dB Pa x 1.15

Performance Table

-2.0 - 3.5

51

-2.0 - 3.5

67

-2.5 - 5.0

101

203.0 - 5.5

118

204.0 - 6.0

135

225x

150

300x

150

450x

150

DF DE

9

Total pressuredrop (Pa)

Lw

l/sMin - Max (m)

-2.0 - 4.5

68

202.5 - 5.0

90

223.0 - 6.0

135

253.5 - 7.0

158

254.5 - 9.0

18015

Lw

l/sMin - Max (m)

232.5 - 5.5

84

243.0 - 6.0

113

274.0 - 7.5

169

304.5 - 8.0

197

305.0 - 10.0

22523

Lw

l/sMin - Max (m)

273.5 - 6.5

101

284.0 - 7.5

135

304.5 - 9.0

202

355.0 - 11.0

236

356.0 - 12.0

27033

Lw

l/sMin - Max (m)

304.0 - 7.5

118

324.5 - 8.5

158

345.0 - 10.5

236

-2.0 - 4.0

84

375x

150

202.5 - 6.0

113

263.5 - 6.5

140

294.0 - 8.0

169

335.0 - 10.0

197

356.0 - 12.0

275

357.0 - 15.0

31543

Lw

l/sMin - Max (m)

525x

150

600x

150

-2.5 - 5.0

101

-2.5 - 5.5

127

223.0 - 6.0

135

223.5 - 6.5

169

274.0 - 7.5

169

274.5 - 8.5

211

304.5 - 9.0

202

325.0 - 10.0

253

345.0 - 10.5

236

356.0 - 12.0

295

300x

225

375x

225

-3.0 - 6.0

153

254.0 - 7.0

203

305.0 - 10.0

253

355.5 - 11.0

303

356.5 - 13.0

354

450x

225

-3.5 - 6.5

177

-4.0 - 7.0

203

244.5 - 8.0

237

255.0 - 9.0

271

295.5 - 11.0

295

306.0 - 12.0

337

336.0 - 12.0

354

357.0 - 14.0

404

377.0 - 14.0

413

358.0 - 16.0

472

525x

225

600x

225

SupplyCore 13

-2.5 - 6.0

169

-3.5 - 6.5

203

204.0 - 7.0

236

-4.5 - 7.5

271

-3.0 - 6.5

253

375x

300

450x

300

525x

300

9

Total pressuredrop (Pa)

Lw

l/sMin - Max (m)

244.0 - 8.0

225

254.5 - 8.5

270

265.0 - 9.0

315

255.5 - 10.0

360

254.5 - 9.0

33815

Lw

l/sMin - Max (m)

295.0 - 10.0

281

305.0 - 10.5

338

305.5 - 11.5

394

306.0 - 12.0

441

305.5 - 11.0

42223

Lw

l/sMin - Max (m)

336.0 - 11.5

338

346.5 - 13.0

405

347.0 - 14.0

473

357.5 - 15.0

540

356.5 - 13.0

50633

Lw

l/sMin - Max (m)

367.0 - 13.5

394

367.5 - 15.0

473

378.0 - 16.0

551

409.0 - 18.0

630

407.5 - 15.0

59043

Lw

l/sMin - Max (m)

600x

300

450x

375

-3.5 - 7.0

296

-4.0 - 7.5

339

255.0 - 10.0

394

255.5 - 11.0

450

306.0 - 12.0

492

306.5 - 13.0

562

357.0 - 14.0

591

357.5 - 15.0

674

408.0 - 16.0

689

409.0 - 17.0

788

525x

375

600x

375

-3.5 - 7.5

354

305.0 - 10.0

472

356.5 - 12.5

591

407.5 - 15.0

709

409.0 - 16.5

827

525x

450

-4.0 - 8.0

406

203.0 - 8.5

474

306.0 - 11.0

540

306.0 - 11.0

629

357.0 - 13.0

675

357.0 - 14.0

785

408.0 - 16.0

810

408.5 - 17.5

942

409.5 - 18.0

945

4010.0 - 20.0

1103

600x

450

600x

525

Waterloo

Page 23: Diffusers Total

Waterloo 2.0 23 Tel: +44 (0) 1622 711511

Louvred Face DiffusersDF DE core 21

Selection ExampleDF21/300x300Air flow rate 225 l/sThrow 3.0 - 6.0mTotal Pressure Loss 23 PaNoise level NC28

Selection CriteriaCeiling height 2.7 mTemperature differential -10KRadius of diffusion - Minimum and maximumthrow which results in an average airvelocity within the occupied zone of0.25m/s and 0.10m/s respectively.NC level = peak level on noise criteriacurves based on Sound Power Level less8dB room absorption

Exhaust & OBSS corrections

Supply diffuser + 0dB Pa x 1.0Supply diffuser + OBSS + 3dB Pa x 1.0Exhaust diffuser + 3dB Pa x 1.1Exhaust diffuser + OBSS +13dB Pa x 1.15

Performance Table

-1.0 - 2.0

34

-1.5 - 2.5

76

-2.0 - 3.5

135

-2.5 - 4.5

211

212.5 - 6.0

304

150x

150

225x

225

300x

300

DF DE

9

Total pressuredrop (Pa)

Lw

l/sMin - Max (m)

-1.0 - 2.5

45

202.0 - 3.5

101

232.5 - 5.0

180

253.0 - 6.0

282

273.5 - 7.5

40515

Lw

l/sMin - Max (m)

201.5 - 3.0

56

252.5 - 5.0

127

283.0 - 6.0

225

304.0 - 7.5

352

324.5 - 9.0

50623

Lw

l/sMin - Max (m)

242.0 - 3.5

68

292.5 - 5.5

152

323.5 - 7.5

270

345.0 - 9.5

422

355.5 - 11.0

60833

Lw

l/sMin - Max (m)

282.0 - 4.5

79

323.0 - 6.0

177

354.5 - 8.5

315

375.5 - 11.0

492

396.5 - 13.0

70943

Lw

l/sMin - Max (m)

375x

375

450x

450

253.0 - 6.5

413

253.5 - 7.0

540

525x

525

600x

600

304.0 - 8.0

551

304.5 - 8.5

720

355.0 - 10.0

689

355.5 - 10.5

900

406.5 - 13.0

827

406.5 - 13.0

1080

407.5 - 15.0

964

407.5 - 15.0

1260

SupplyCore 21

Waterloo

Page 24: Diffusers Total

Waterloo 2.0 24 Tel: +44 (0) 1622 711511

Louvred Face DiffusersDF DE core 22

Selection ExampleDF22/450x150Air flow rate 169 l/sThrow 3.0 - 5.5mTotal Pressure Loss 23 PaNoise level NC27

Selection CriteriaCeiling height 2.7 mTemperature differential -10KRadius of diffusion - Minimum and maximumthrow which results in an average airvelocity within the occupied zone of0.25m/s and 0.10m/s respectively.NC level = peak level on noise criteriacurves based on Sound Power Level less8dB room absorption

Exhaust & OBSS corrections

Supply diffuser + 0dB Pa x 1.0Supply diffuser + OBSS + 3dB Pa x 1.0Exhaust diffuser + 3dB Pa x 1.1Exhaust diffuser + OBSS +13dB Pa x 1.15

Performance Table

-1.0 - 2.5

51

-1.5 - 2.5

67

-2.0 - 3.0

101

-2.5 - 3.5

118

-3.0 - 4.0

135

225x

150

300x

150

450x

150

DF DE

9

Total pressuredrop (Pa)

Lw

l/sMin - Max (m)

-1.5 - 3.0

68

-2.0 - 3.5

90

203.0 - 4.5

135

203.5 - 5.0

158

204.0 - 5.5

18015

Lw

l/sMin - Max (m)

232.0 - 3.5

84

242.0 - 4.5

113

273.0 - 5.5

169

303.5 - 6.0

197

304.0 - 7.0

22523

Lw

l/sMin - Max (m)

272.0 - 4.5

101

282.5 - 5.0

135

303.5 - 6.0

202

304.0 - 6.5

236

304.5 - 8.0

27033

Lw

l/sMin - Max (m)

302.5 - 5.0

118

323.0 - 6.0

158

354.0 - 7.0

236

-1.5 - 3.0

84

375x

150

-2.5 - 4.0

113

252.5 - 5.0

140

283.0 - 5.0

169

303.5 - 6.5

197

354.5 - 8.0

275

355.0 - 9.0

31543

Lw

l/sMin - Max (m)

525x

150

600x

150

-2.0 - 3.5

101

-2.0 - 3.5

127

222.0 - 4.5

135

222.5 - 5.0

169

272.5 - 5.0

169

273.0 - 6.0

211

303.5 - 6.5

202

323.5 - 7.5

253

344.0 - 7.5

236

354.5 - 8.5

295

300x

225

375x

225

-2.5 - 4.0

153

253.0 - 5.5

203

303.5 - 6.5

253

354.0 - 8.0

303

405.0 - 9.0

354

450x

225

-3.0 - 4.5

177

203.5 - 5.0

203

253.5 - 6.0

237

254.0 - 6.5

271

304.0 - 7.0

295

304.5 - 8.0

337

354.5 - 9.0

354

355.0 - 10.0

404

405.5 - 10.0

413

406.0 - 11.0

472

525x

225

600x

225

SupplyCore 22

-2.0 - 4.0

169

-2.5 - 4.5

203

-3.5 - 5.0

236

-3.5 - 5.5

271

-2.5 - 5.0

253

375x

300

450x

300

525x

300

9

Total pressuredrop (Pa)

Lw

l/sMin - Max (m)

242.5 - 5.5

225

253.0 - 6.0

270

253.5 - 6.5

315

304.0 - 7.0

360

253.0 - 6.5

33815

Lw

l/sMin - Max (m)

293.5 - 7.0

281

304.0 - 7.5

338

304.5 - 8.0

394

355.0 - 9.0

441

304.0 - 8.5

42223

Lw

l/sMin - Max (m)

334.0 - 8.0

338

354.5 - 9.0

405

355.0 - 10.0

473

406.0 - 12.0

540

355.0 - 9.5

50633

Lw

l/sMin - Max (m)

365.0 - 9.5

394

405.5 - 10.0

473

406.0 - 12.0

551

407.0 - 14.0

630

406.0 - 11.0

59043

Lw

l/sMin - Max (m)

600x

300

450x

375

-3.0 - 5.5

296

203.5 - 6.0

339

253.5 - 7.0

394

304.0 - 8.0

450

304.5 - 9.0

492

355.0 - 10.0

562

355.5 - 10.0

591

356.0 - 11.0

674

406.5 - 12.0

689

407.0 - 13.0

788

525x

375

600x

375

-2.5 - 5.0

354

303.0 - 6.5

472

354.0 - 8.5

591

405.0 - 9.5

709

406.0 - 11.5

827

525x

450

203.0 - 5.5

406

204.0 - 6.0

474

304.0 - 7.0

540

305.0 - 8.0

629

355.0 - 9.0

675

355.5 - 10.0

785

406.0 - 11.0

810

406.5 - 12.0

942

407.0 - 13.0

945

408.0 - 14.0

1103

600x

450

600x

525

Waterloo

Page 25: Diffusers Total

Waterloo 2.0 25 Tel: +44 (0) 1622 711511

Louvred Face DiffusersDF DE core 23

Selection ExampleDF23/450x150Air flow rate 169 l/sThrow 3.0 - 5.5mTotal Pressure Loss 23 PaNoise level NC27

Selection CriteriaCeiling height 2.7 mTemperature differential -10KRadius of diffusion - Minimum and maximumthrow which results in an average airvelocity within the occupied zone of0.25m/s and 0.10m/s respectively.NC level = peak level on noise criteriacurves based on Sound Power Level less8dB room absorption

Exhaust & OBSS corrections

Supply diffuser + 0dB Pa x 1.0Supply diffuser + OBSS + 3dB Pa x 1.0Exhaust diffuser + 3dB Pa x 1.1Exhaust diffuser + OBSS +13dB Pa x 1.15

Performance Table

-1.0 - 2.5

51

-1.5 - 2.5

67

-2.0 - 3.5

101

-2.5 - 4.0

118

-3.0 - 5.0

135

225x

150

300x

150

450x

150

DF DE

9

Total pressuredrop (Pa)

Lw

l/sMin - Max (m)

-1.5 - 3.0

68

-2.0 - 3.5

90

222.5 - 4.5

135

203.0 - 5.0

158

203.5 - 6.0

18015

Lw

l/sMin - Max (m)

232.0 - 3.5

84

242.0 - 4.5

113

273.0 - 5.5

169

303.5 - 6.0

197

304.0 - 7.0

22523

Lw

l/sMin - Max (m)

272.0 - 4.5

101

282.5 - 5.0

135

303.5 - 6.5

202

304.0 - 7.0

236

304.5 - 8.0

27033

Lw

l/sMin - Max (m)

302.5 - 5.0

118

323.0 - 6.0

158

344.0 - 7.5

236

-1.5 - 3.0

84

375x

150

202.0 - 4.0

113

262.5 - 5.0

140

293.0 - 6.0

169

333.5 - 7.0

197

354.5 - 8.0

275

355.0 - 9.0

31543

Lw

l/sMin - Max (m)

525x

150

600x

150

-2.0 - 3.5

101

-2.0 - 4.0

127

222.0 - 4.5

135

222.5 - 5.0

169

272.5 - 5.5

169

273.0 - 6.0

211

303.5 - 6.5

202

323.5 - 7.5

253

344.0 - 7.5

236

354.0 - 8.5

295

300x

225

375x

225

-2.5 - 4.0

153

253.0 - 5.5

203

303.5 - 6.5

253

354.0 - 8.0

303

405.0 - 9.0

354

450x

225

-3.0 - 4.5

177

203.5 - 5.0

203

243.5 - 6.0

237

304.0 - 7.0

271

293.5 - 7.5

295

354.5 - 9.0

337

334.5 - 8.5

354

405.5 - 110

404

375.0 - 10.0

413

407.0 - 13.0

472

525x

225

600x

225

SupplyCore 23

-2.0 - 4.0

169

-2.0 - 4.5

203

202.5 - 5.0

236

203.0 - 6.0

271

202.5 - 5.0

253

375x

300

450x

300

525x

300

9

Total pressuredrop (Pa)

Lw

l/sMin - Max (m)

242.5 - 6.0

225

253.0 - 6.0

270

263.5 - 6.5

315

304.0 - 7.0

360

263.5 - 6.5

33815

Lw

l/sMin - Max (m)

293.5 - 7.0

281

304.0 - 8.0

338

304.5 - 9.0

394

355.0 - 10.0

441

314.5 - 8.5

42223

Lw

l/sMin - Max (m)

334.0 - 8.0

338

234.5 - 9.0

405

345.0 - 10.0

473

405.5 - 12.0

540

355.0 - 10.0

50633

Lw

l/sMin - Max (m)

365.0 - 9.5

394

375.5 - 10.5

473

376.0 - 12.0

551

407.0 - 14.0

630

386.0 - 12.0

59043

Lw

l/sMin - Max (m)

600x

300

450x

375

-3.0 - 6.0

296

203.5 - 6.5

339

254.0 - 7.0

394

304.5 - 8.0

450

305.0 - 9.0

492

355.5 - 10.0

562

355.5 - 11.0

591

356.0 - 12.0

674

407.0 - 13.0

689

407.5 - 14.0

788

525x

375

600x

375

-2.5 - 5.0

354

303.0 - 6.5

472

354.0 - 8.5

591

405.0 - 9.5

709

406.0 - 12.0

827

525x

450

203.0 - 5.5

406

203.0 - 5.5

474

303.5 - 7.0

540

304.0 - 8.0

629

354.5 - 9.0

675

355.0 - 10.0

785

405.5 - 10.0

810

406.0 - 11.0

942

407.0 - 13.0

945

407.0 - 14.0

1103

600x

450

600x

525

Waterloo

Page 26: Diffusers Total

Waterloo 2.0 26 Tel: +44 (0) 1622 711511

Louvred Face DiffusersDF DE core 25

Selection ExampleDF25/300x300Air flow rate 225 l/sThrow 3.0 - 6.0mTotal Pressure Loss 23 PaNoise level NC28

Selection CriteriaCeiling height 2.7 mTemperature differential -10KRadius of diffusion - Minimum and maximumthrow which results in an average airvelocity within the occupied zone of0.25m/s and 0.10m/s respectively.NC level = peak level on noise criteriacurves based on Sound Power Level less8dB room absorption

Exhaust & OBSS corrections

Supply diffuser + 0dB Pa x 1.0Supply diffuser + OBSS + 3dB Pa x 1.0Exhaust diffuser + 3dB Pa x 1.1Exhaust diffuser + OBSS +13dB Pa x 1.15

Performance Table

-1.0 - 2.0

34

-1.5 - 2.5

76

-2.0 - 3.5

135

-2.5 - 4.5

211

212.5 - 6.0

304

150x

150

225x

225

300x

300

DF DE

9

Total pressuredrop (Pa)

Lw

l/sMin - Max (m)

-1.0 - 2.5

45

202.0 - 3.5

101

232.5 - 5.0

180

253.0 - 6.0

282

273.5 - 7.5

40515

Lw

l/sMin - Max (m)

201.5 - 3.0

56

252.5 - 5.0

127

283.0 - 6.0

225

304.0 - 7.5

352

324.5 - 9.0

50623

Lw

l/sMin - Max (m)

242.0 - 3.5

68

292.5 - 5.5

152

323.5 - 7.5

270

345.0 - 9.5

422

355.5 - 11.0

60833

Lw

l/sMin - Max (m)

282.0 - 4.5

79

323.0 - 6.0

177

354.5 - 8.5

315

375.5 - 11.0

492

396.5 - 13.0

70943

Lw

l/sMin - Max (m)

375x

375

450x

450

253.0 - 6.5

413

253.0 - 7.0

540

525x

525

600x

600

304.0 - 8.0

551

304.0 - 9.0

720

355.0 - 10.0

689

355.0 - 11.0

900

40

827

406.0 - 13.0

1080

407.0 - 14.0

964

407.0 - 15.0

1260

SupplyCore 25

6.0 - 12.0

Waterloo

Page 27: Diffusers Total

Waterloo 2.0 27 Tel: +44 (0) 1622 711511

Louvred Face DiffusersDF DE core 26 & 27

Selection ExampleDF26/450x150Air flow rate 169 l/sShort side throw 2.5 - 4.0mLong side throw 3.5 - 6.5mTotal Pressure Loss 23 PaNoise level NC30

Selection CriteriaCeiling height 2.7 mTemperature differential -10KRadius of diffusion - Minimum and maximumthrow which results in an average airvelocity within the occupied zone of0.25m/s and 0.10m/s respectively.NC level = peak level on noise criteriacurves based on Sound Power Level less8dB room absorption

Exhaust & OBSS corrections

Supply diffuser + 0dB Pa x 1.0Supply diffuser + OBSS + 3dB Pa x 1.0Exhaust diffuser + 3dB Pa x 1.1Exhaust diffuser + OBSS +13dB Pa x 1.15Performance Table

-

1.0 - 2.051

-

1.0 - 2.067

-

1.5 - 2.5101

-

2.0 - 3.0118

20

2.5 - 3.5135

225x

150

300x

150

450x

150

DF DE

9

Total pressuredrop (Pa)

Lw

l/s

-2.0 - 3.5

68

-2.0 - 4.5

90

203.0 - 5.5

135

253.0 - 6.0

158

253.5 - 6.5

180

15

Lw

l/s

232.0 - 4.5

242.5 - 5.0

303.5 - 6.5

304.0 - 7.0

304.0 - 8.0

23

Lw

272.5 - 5.0

283.5 - 6.5

304.5 - 8.0

305.0 - 8.0

355.5 - 9.5

33

Lw

303.0 - 6.0

118

324.0 - 7.5

158

355.0 - 9.0

236

-

1.0 - 2.084

375x

150

202.5 - 5.0

113

263.0 - 6.0

294.0 - 7.5

334.5 - 8.5

197

355.5 - 10.0

275

356.0 - 11.0

315

43

Lw

l/s

525x

150

600x

150

-

1.5 - 3.0101

-

2.0 - 3.5127

222.5 - 5.0

135

253.0 - 5.5

169

272.5 - 6.0

303.0 - 6.5

303.5 - 7.5

304.0 - 8.0

344.5 - 8.0

236

355.0 - 9.0

295

300x

225

375x

225

-

2.5 - 4.0153

253.5 - 6.0

203

303.5 - 7.0

354.5 - 9.0

355.5 - 9.0

354

450x

225

20

3.0 - 4.0177

20

3.0 - 5.01.5 - 2.5 2.0 - 3.5 2.5 - 4.5 2.5 - 5.0 3.0 - 5.52.0 - 4.0 2.0 - 4.0 2.5 - 4.5 3.0 - 5.0 3.5 - 5.5 3.5 - 6.0

203

254.0 - 7.0

237

253.5 - 7.0

1.0 - 2.5 1.0 - 2.5 1.5 - 3.0 2.0 - 3.5 2.5 - 3.51.0 - 2.5 2.0 - 4.0 2.5 - 4.5 3.0 - 5.0 3.0 - 5.5 3.0 - 6.0271

304.0 - 8.0

304.5 - 9.0

2.0 - 3.5 2.0 - 3.5 2.5 - 4.0 3.0 - 4.5 3.5 - 5.02.0 - 3.5 2.5 - 5.0 3.0 - 5.5 3.5 - 6.0 4.0 - 7.0 4.0 - 8.084 113 169 197 225l/s 140 169 211 253 295 337

355.0 - 10.0

355.5 - 11.0

2.0 - 4.0 2.0 - 4.0 2.5 - 4.5 3.5 - 5.0 3.5 - 5.52.0 - 4.0 2.5 - 6.0 3.0 - 6.5 3.5 - 7.0 4.0 - 8.0 4.5 - 9.0101 135 202 236 270l/s 169 202 253 303 354 404

406.0 - 11.0

413

407.0 - 12.0

2.0 - 4.5 2.0 - 4.5 2.5 - 5.02.0 - 4.5 3.0 - 5.5 3.5 - 6.0 3.5 - 6.5 4.0 - 7.0 4.5 - 8.0 5.0 - 9.0 5.5 - 10.0472

525x

225

600x

225

SupplyCore 26

-

2.0 - 4.0169

-

2.0 - 4.0203

-

2.5 - 4.5236

20

2.5 - 5.0271

-

2.5 - 4.5253

375x

300

450x

300

525x

300

9

Total pressuredrop (Pa)

Lw

l/s

243.0 - 6.0

225

253.5 - 7.5

270

254.0 - 7.5

315

254.5 - 8.5

360

254.0 - 7.5

338

15

Lw

l/s

294.5 - 7.0

281

304.5 - 9.0

338

305.0 - 10.0

394

305.5 - 11.0

441

305.0 - 10.0

422

23

Lw

l/s

334.5 - 9.0

335.0 - 10.5

355.5 - 11.5

356.0 - 12.0

355.5 - 11.5

33

Lw

365.0 - 10.5

394

376.0 - 12.0

473

406.5 - 13.0

551

408.0 - 15.0

630

406.5 - 13.0

590

43

Lw

l/s

600x

300

450x

375

20

2.5 - 5.0296

20

3.0 - 6.0339

254.5 - 8.0

394

255.0 - 8.5

450

306.0 - 11.0

492

306.5 - 12.0

562

356.0 - 13.0

357.0 - 14.0

407.0 - 15.0

689

408.0 - 16.0

788

525x

375

600x

375

2.5 - 5.0 2.5 - 5.0 3.0 - 5.5 3.0 - 6.0 3.0 - 5.5 3.0 - 6.0 3.5 - 6.5

2.5 - 5.0 2.5 - 5.0 3.0 - 5.5 3.0 - 6.0 3.0 - 5.5 3.0 - 6.0 3.5 - 7.0

3.0 - 6.0 3.0 - 6.0 3.5 - 6.5 4.0 - 7.0 3.5 - 6.5 4.0 - 7.0 5.0 - 8.0

4.0 - 7.5 4.0 - 7.5 4.5 - 8.5 5.0 - 9.0 4.5 - 8.5 5.0 - 9.0 6.0 - 10.0338 405 473 540 506l/s 591 674

4.5 - 8.5 4.5 - 8.5 5.0 - 9.5 6.0 - 12.0 5.0 - 9.5 6.0 - 11.0 7.0 - 12.0

Core 27

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

L L

S S

S = Short side throwL = Long side throwViewed from face Viewed from face

Waterloo

Page 28: Diffusers Total

Waterloo 2.0 28 Tel: +44 (0) 1622 711511

Louvred Face DiffusersDF DE core 31

Selection ExampleDF31/300x300Air flow rate 225 l/sShort side throw 2.0 - 4.5mLong side throw 2.5 - 5.0mTotal Pressure Loss 23 PaNoise level NC28

Selection CriteriaCeiling height 2.7 mTemperature differential -10KRadius of diffusion - Minimum and maximumthrow which results in an average airvelocity within the occupied zone of0.25m/s and 0.10m/s respectively.NC level = peak level on noise criteriacurves based on Sound Power Level less8dB room absorption

Exhaust & OBSS corrections

Supply diffuser + 0dB Pa x 1.0Supply diffuser + OBSS + 3dB Pa x 1.0Exhaust diffuser + 3dB Pa x 1.1Exhaust diffuser + OBSS +13dB Pa x 1.15

Performance Table

Core 31

1.0 - 2.034

1.0 - 2.076

1.5 - 3.0135

2.0 - 3.5211

2.5 - 5.0304

150x

150

225x

225

300x

300

DF DE

9

Total pressuredrop (Pa)

- - - - 21Lw

l/sS Min - Max (m)L Min - Max (m) 1.0 - 2.0 1.0 - 2.5 2.0 - 3.5 2.0 - 4.0 3.5 - 6.5

1.0 - 2.045

1.0 - 2.5101

2.0 - 4.0180

2.0 - 4.5282

2.5 - 5.0405

15

- 20 23 25 27Lw

l/sS Min - Max (m)L Min - Max (m) 1.0 - 2.0 2.0 - 3.5 2.0 - 4.5 2.5 - 5.0 3.5 - 7.0

1.0 - 2.056

2.0 - 3.5127

2.0 - 4.5225

2.5 - 5.5352

3.5 - 6.5506

23

20 25 28 30 32Lw

l/sS Min - Max (m)L Min - Max (m) 1.5 - 2.5 2.0 - 4.0 2.5 - 5.0 3.5 - 6.0 4.0 - 8.0

1.5 - 2.563

2.0 - 4.5152

2.5 - 5.0270

3.5 - 6.5422

4.0 - 8.0608

33

24 29 32 34 35Lw

l/sS Min - Max (m)L Min - Max (m) 2.0 - 3.5 2.5 - 5.0 3.5 - 6.5 4.0 - 8.0 5.0 - 10.0

2.0 - 3.579

2.5 - 4.5177

3.0 - 6.0315

4.0 - 7.5492

4.5 - 9.0709

43

28 32 35 37 39Lw

l/sS Min - Max (m)L Min - Max (m) 2.0 - 4.0 2.5 - 6.0 4.0 - 7.5 5.0 - 9.5 6.0 - 11.5

375x

375

450x

450

3.5 - 7.0413

4.0 - 8.0540

25 304.5 - 9.0 5.5 - 10.0

3.5 - 7.0551

4.0 - 8.0720

30 355.0 - 9.5 5.5 - 10.0

4.0 - 7.0689

5.0 - 8.0900

35 405.5 - 9.0 5.0 - 10.0

4.5 - 9.0827

5.0 - 10.01080

40 405.5 - 11.0 6.0 - 12.0

5.0 - 10.0964

6.0 - 12.01260

45 456.5 - 12.0 7.0 - 14.0

525x

525

600x

600

SupplyLL

S

S = Short side throwL = Long side throw

Waterloo

Page 29: Diffusers Total

Waterloo 2.0 29 Tel: +44 (0) 1622 711511

Louvred Face DiffusersDF DE core 32

Selection ExampleDF32/450x150Air flow rate 169 l/sShort side throw 1.5 - 3.0mShort side throw 3.0 - 6.0mTotal Pressure Loss 23 PaNoise level NC27

Selection CriteriaCeiling height 2.7 mTemperature differential -10KRadius of diffusion - Minimum and maximumthrow which results in an average airvelocity within the occupied zone of0.25m/s and 0.10m/s respectively.NC level = peak level on noise criteriacurves based on Sound Power Level less8dB room absorption

Exhaust & OBSS corrections

Supply diffuser + 0dB Pa x 1.0Supply diffuser + OBSS + 3dB Pa x 1.0Exhaust diffuser + 3dB Pa x 1.1Exhaust diffuser + OBSS +13dB Pa x 1.15Performance Table

-

1.0 - 2.051

-

1.0 - 2.067

-

1.0 - 2.0101

-

1.5 - 2.5118

-

2.0 - 4.0135

225x

150

300x

150

450x

150

DF DE

9

Total pressuredrop (Pa)

Lw

l/s

-1.0 - 2.5

68

-2.0 - 3.5

90

222.5 - 5.0

135

253.0 - 5.5

158

253.5 - 6.0

180

15

Lw

l/s

232.0 - 3.5

242.0 - 4.5

273.0 - 6.0

303.5 - 6.5

304.0 - 7.0

23

Lw

272.0 - 4.0

282.5 - 5.0

304.0 - 7.5

304.5 - 8.5

355.0 - 9.0

33

Lw

302.5 - 4.5

118

323.0 - 6.0

158

344.5 - 8.5

236

-

1.0 - 2.084

375x

150

202.0 - 4.5

113

262.5 - 5.0

293.5 - 6.5

334.0 - 7.5

197

355.0 - 9.5

275

355.5 - 11.0

315

43

Lw

l/s

525x

150

600x

150

-

1.5 - 3.0101

-

2.0 - 3.0127

222.0 - 4.0

135

222.0 - 4.5

169

272.0 - 4.5

272.5 - 5.5

302.5 - 5.0

323.5 - 6.5

343.0 - 6.0

236

354.0 - 8.0

295

300x

225

375x

225

-

2.5 - 4.0153

252.5 - 5.0

203

303.0 - 6.0

354.0 - 7.0

354.5 - 9.0

354

450x

225

-

3.0 - 5.0177

-

3.0 - 6.01.0 - 2.0 1.5 - 2.5 2.0 - 3.5 2.5 - 4.0 3.0 - 4.52.0 - 3.5 1.5 - 3.0 2.0 - 3.5 2.5 - 4.0 2.5 - 5.0 3.0 - 6.0

203

243.0 - 6.0

237

253.5 - 6.5

1.0 - 2.0 1.0 - 2.0 1.0 - 2.0 1.5 - 2.5 2.0 - 3.01.0 - 2.0 2.0 - 4.0 2.5 - 3.5 3.0 - 4.0 3.5 - 5.0 4.0 - 5.5271

293.5 - 7.0

304.0 - 9.0

1.5 - 3.0 1.5 - 3.0 1.5 - 3.0 1.5 - 3.5 2.0 - 4.01.5 - 3.0 2.0 - 4.5 2.0 - 4.0 2.5 - 5.0 3.0 - 6.0 3.5 - 7.084 113 169 197 225l/s 140 169 211 253 295 337

334.5 - 9.0

355.0 - 10.0

2.0 - 3.5 2.0 - 3.5 2.0 - 3.5 2.5 - 4.0 3.0 - 4.52.0 - 3.5 2.5 - 5.0 2.5 - 5.0 3.5 - 6.0 3.5 - 7.0 4.0 - 8.0101 135 202 236 270l/s 169 202 253 303 354 404

375.0 - 10.0

413

405.5 - 12.0

2.0 - 4.5 2.0 - 4.5 2.0 - 4.52.0 - 4.5 2.5 - 5.5 3.0 - 6.0 3.0 - 6.0 3.5 - 6.5 4.0 - 7.0 5.0 - 8.0 5.5 - 9.0472

525x

225

600x

225

SupplyCore 32

-

2.0 - 3.5169

-

2.0 - 3.5203

-

2.5 - 4.0236

20

3.0 - 4.5271

20

2.0 - 4.0253

375x

300

450x

300

525x

300

9

Total pressuredrop (Pa)

Lw

l/s

242.5 - 5.0

225

252.5 - 5.0

270

253.0 - 5.5

315

303.5 - 6.0

360

252.5 - 5.5

338

15

Lw

l/s

292.5 - 6.0

281

303.5 - 6.5

338

304.0 - 7.0

394

354.5 - 7.5

441

313.5 - 7.5

422

23

Lw

l/s

333.5 - 7.5

334.0 - 8.0

354.5 - 8.5

355.0 - 9.0

354.5 - 8.5

33

Lw

364.0 - 8.0

394

374.5 - 9.0

473

405.0 - 9.5

551

405.5 - 10.0

630

385.0 - 10.0

590

43

Lw

l/s

600x

300

450x

375

20

2.5 - 4.5296

25

3.0 - 5.0339

303.0 - 6.0

394

353.5 - 6.5

450

354.0 - 8.0

492

404.5 - 8.5

562

355.0 - 9.0

405.5 - 10.0

405.5 - 11.0

689

456.0 - 12.0

788

525x

375

600x

375354

472

591

827

525x

450406

2.0 - 3.5 2.0 - 4.0 2.5 - 4.5 3.0 - 5.0 2.0 - 4.5 2.5 - 5.0 3.0 - 6.0

474

5402.0 - 4.5 2.5 - 5.0 3.0 - 5.5 3.5 - 6.0 2.5 - 5.0 3.0 - 5.5 3.5 - 6.0

629

6752.5 - 5.5 2.5 - 6.0 3.0 - 6.5 3.5 - 7.0 3.5 - 6.5 4.0 - 7.0 4.5 - 7.5

785

3.5 - 6.5 3.5 - 7.5 4.0 - 8.0 4.5 - 8.5 4.0 - 8.0 4.5 - 9.0 5.0 - 9.5338 405 473 540 506l/s 591 674 709 810 942

9454.0 - 7.5 4.0 - 8.0 4.5 - 8.5 5.0 - 9.0 4.5 - 9.0 5.0 - 10.0 5.5 - 11.0

22

2.5 - 5.0

283.5 - 6.5

324.5 - 8.5

375.0 - 10.0

406.0 - 12.0

25

3.0 - 5.5

25

3.0 - 5.5

304.0 - 7.0

304.0 - 7.0

355.0 - 9.0

355.0 - 9.0

405.5 - 11.0

405.5 - 10.5

406.5 - 13.0

406.5 - 12.5

2.5 - 5.0 3.0 - 5.5 3.0 - 5.5

3.0 - 6.0 3.5 - 6.5 3.5 - 6.5

4.0 - 7.5 4.5 - 8.0 4.5 - 8.0

4.5 - 9.0 5.0 - 10.0 5.0 - 9.5

5.5 - 11.0 6.0 - 12.0 6.0 - 11.51103

600x

450

600x

525

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

L

SS

S = Short side throwL = Long side throw

Waterloo

Page 30: Diffusers Total

Waterloo 2.0 30 Tel: +44 (0) 1622 711511

Louvred Face DiffusersDF DE core 33

Selection ExampleDF33/450x150Air flow rate 169 l/sShort side throw 2.0 - 3.0mLong side throw 3.0 - 5.0mTotal Pressure Loss 23 PaNoise level NC30

Selection CriteriaCeiling height 2.7 mTemperature differential -10KRadius of diffusion - Minimum and maximumthrow which results in an average airvelocity within the occupied zone of0.25m/s and 0.10m/s respectively.NC level = peak level on noise criteriacurves based on Sound Power Level less8dB room absorption

Exhaust & OBSS corrections

Supply diffuser + 0dB Pa x 1.0Supply diffuser + OBSS + 3dB Pa x 1.0Exhaust diffuser + 3dB Pa x 1.1Exhaust diffuser + OBSS +13dB Pa x 1.15Performance Table

-

1.0 - 1.551

-

1.0 - 1.567

-

1.5 - 2.0101

20

2.0 - 2.5118

20

2.5 - 3.0135

225x

150

300x

150

450x

150

DF DE

9

Total pressuredrop (Pa)

Lw

l/s

-1.5 - 2.5

68

-2.0 - 3.5

90

202.5 - 4.0

135

253.0 - 4.5

158

253.5 - 5.0

180

15

Lw

l/s

232.0 - 3.5

242.0 - 4.5

303.0 - 5.0

303.5 - 5.0

304.5 - 5.0

23

Lw

272.0 - 4.5

282.5 - 5.0

303.0 - 6.0

303.5 - 6.5

354.0 - 7.0

33

Lw

302.5 - 5.0

118

322.5 - 6.0

158

354.0 - 7.0

236

-

1.0 - 1.584

375x

150

202.0 - 3.5

113

262.5 - 4.5

292.5 - 5.5

333.5 - 6.5

197

354.5 - 7.5

275

355.0 - 8.0

315

43

Lw

l/s

525x

150

600x

150

-

1.0 - 2.0101

-

1.0 - 2.0127

252.0 - 4.0

135

252.0 - 4.5

169

302.5 - 5.0

302.5 - 5.5

302.5 - 6.0

353.5 - 6.5

353.5 - 7.0

236

354.0 - 8.0

295

300x

225

375x

225

-

1.5 - 2.5153

252.5 - 5.0

203

303.0 - 6.0

354.0 - 7.0

354.5 - 7.0

354

450x

225

-

2.0 - 3.0177

-

2.5 - 3.51.0 - 2.0 1.5 - 2.5 2.0 - 3.0 2.5 - 3.5 3.0 - 4.01.5 - 2.5 1.5 - 2.5 2.0 - 3.5 2.5 - 4.0 3.0 - 4.5 3.5 - 5.0

203

253.0 - 5.5

237

253.5 - 6.0

1.0 - 2.0 1.0 - 2.0 1.5 - 2.5 2.0 - 3.0 2.5 - 3.51.0 - 2.0 1.5 - 2.5 1.5 - 2.5 2.0 - 3.0 2.5 - 3.5 3.0 - 4.0271

303.5 - 6.5

304.0 - 7.0

1.0 - 2.5 1.5 - 2.5 2.0 - 3.0 2.5 - 3.5 3.0 - 4.01.5 - 2.5 2.0 - 3.5 2.0 - 3.5 2.5 - 4.0 3.0 - 4.5 3.5 - 5.084 113 169 197 225l/s 140 169 211 253 295 337

354.5 - 7.5

355.0 - 8.0

1.5 - 2.5 1.5 - 2.5 2.0 - 3.0 2.5 - 3.5 3.0 - 6.01.5 - 2.5 2.0 - 4.0 2.0 - 4.0 2.5 - 4.5 3.0 - 5.0 3.5 - 5.5101 135 202 236 270l/s 169 202 253 303 354 404

355.0 - 9.0

413

405.5 - 10.0

1.5 - 3.0 1.5 - 3.0 2.0 - 3.51.5 - 3.0 2.5 - 4.0 3.0 - 4.5 2.5 - 5.0 2.5 - 5.0 3.0 - 5.5 3.5 - 6.0 4.0 - 7.0472

525x

225

600x

225

SupplyCore 33

-

1.5 - 2.5169

-

1.5 - 2.5203

20

2.0 - 3.0236

20

2.5 - 3.5271

20

2.0 - 3.5253

375x

300

450x

300

525x

300

9

Total pressuredrop (Pa)

Lw

l/s

252.5 - 5.0

225

252.5 - 5.5

270

253.0 - 6.0

315

303.5 - 6.5

360

253.0 - 6.0

338

15

Lw

l/s

303.0 - 6.0

281

303.5 - 7.0

338

304.0 - 7.5

394

354.5 - 8.0

441

304.0 - 7.5

422

23

Lw

l/s

354.0 - 7.5

354.0 - 8.0

354.5 - 8.5

355.0 - 9.0

354.5 - 9.0

33

Lw

354.5 - 8.5

394

405.0 - 9.5

473

405.5 - 10.0

551

406.0 - 10.5

630

405.0 - 10.5

590

43

Lw

l/s

600x

300

450x

375

20

2.5 - 4.0296

25

3.0 - 4.5339

303.5 - 6.5

394

304.0 - 7.0

450

354.5 - 7.5

492

355.0 - 8.0

562

355.0 - 9.5

405.5 - 10.0

405.5 - 11.0

689

406.5 - 11.5

788

525x

375

600x

375354

472

591

827

525x

450406

2.0 - 4.0 2.0 - 4.5 2.5 - 5.0 3.0 - 5.5 2.5 - 4.5 3.0 - 5.0 3.5 - 5.5

474

5402.0 - 3.5 2.0 - 3.5 2.5 - 4.0 3.0 - 4.5 2.0 - 4.5 2.5 - 4.5 3.0 - 5.0

629

6752.0 - 4.5 2.0 - 4.5 2.5 - 5.0 3.0 - 5.5 2.5 - 5.5 3.0 - 6.0 3.5 - 5.0

785

2.5 - 5.0 2.5 - 5.0 3.0 - 5.5 3.5 - 6.0 3.5 - 6.5 4.0 - 7.0 4.5 - 7.5338 405 473 540 506l/s 591 674 709 810 942

9453.0 - 6.0 3.0 - 6.0 3.5 - 6.5 4.0 - 7.0 4.0 - 7.5 4.5 - 8.0 5.0 - 9.0

25

2.0 - 4.0

303.5 - 7.5

354.5 - 9.0

405.0 - 10.5

406.0 - 12.5

2.5 - 5.0

2.5 - 5..0

3.5 - 6.5

4.0 - 7.5

4.5 - 9.0

25

2.5 - 4.5

304.0 - 8.0

355.0 - 9.5

405.5 - 11.0

406.5 - 13.0

3.0 - 5.5

3.0 - 5.5

4.0 - 7.0

4.5 - 8.0

5.0 - 9.5

25

2.5 - 4.5

304.0 - 8.5

355.0 - 10.0

405.5 - 11.5

456.5 - 14.0

3.0 - 5.5

3.0 - 5.5

4.0 - 7.5

4.5 - 8.5

5.0 - 10.01103

600x

450

600x

525

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

L

L

S

S = Short side throwL = Long side throw

Waterloo

Page 31: Diffusers Total

Waterloo 2.0 31 Tel: +44 (0) 1622 711511

Louvred Face DiffusersDF DE core 41

Selection ExampleDF41/300x300Air flow rate 225 l/sThrow 2.0 - 4.5mTotal Pressure Loss 23 PaNoise level NC25

Selection CriteriaCeiling height 2.7 mTemperature differential -10KRadius of diffusion - Minimum and maximumthrow which results in an average airvelocity within the occupied zone of0.25m/s and 0.10m/s respectively.NC level = peak level on noise criteriacurves based on Sound Power Level less8dB room absorption

Exhaust & OBSS corrections

Supply diffuser + 0dB Pa x 1.0Supply diffuser + OBSS + 3dB Pa x 1.0Exhaust diffuser + 3dB Pa x 1.1Exhaust diffuser + OBSS +13dB Pa x 1.15

Performance Table

-1.0 - 1.5

34

-1.0 - 2.0

76

-1.5 - 2.5

135

-2.0 - 3.5

211

222.0 - 4.0

304

150x

150

225x

225

300x

300

DF DE

9

Total pressuredrop (Pa)

Lw

l/sMin - Max (m)

-1.0 - 2.0

45

-1.5 - 2.5

101

202.0 - 3.5

180

242.0 - 4.5

282

282.5 - 5.0

40515

Lw

l/sMin - Max (m)

-1.5 - 2.5

56

-2.0 - 3.5

127

252.0 - 4.5

225

292.5 - 5.5

352

333.5 - 6.5

50623

Lw

l/sMin - Max (m)

-1.5 - 3.0

68

232.0 - 4.0

152

292.5 - 5.0

270

333.5 - 6.5

422

364.0 - 8.0

60833

Lw

l/sMin - Max (m)

192.0 - 3.5

79

272.0 - 4.5

177

323.0 - 6.0

315

374.0 - 7.5

492

404.5 - 9.0

70943

Lw

l/sMin - Max (m)

375x

375

450x

450

SupplyCore 41

252.5 - 5.0

413

302.5 - 5.5

540

525x

525

600x

600

303.0 - 6.0

551

353.5 - 7.0

720

354.0 - 8.0

689

404.5 - 8.5

900

404.5 - 9.0

827

455.0 - 10.5

1080

455.0 - 10.5

964

456.0 - 12.0

1260

Waterloo

C D E

F G H J K

B

Blanking Plates

Page 32: Diffusers Total

Waterloo 2.0 32 Tel: +44 (0) 1622 711511

Louvred Face DiffusersDF DE core 42

Selection ExampleDF42/450x150Air flow rate 169 l/sShort side throw 1.0 - 2.5mLong side throw 2.5 - 5.0mTotal Pressure Loss 23 PaNoise level NC25

Selection CriteriaCeiling height 2.7 mTemperature differential -10KRadius of diffusion - Minimum and maximumthrow which results in an average airvelocity within the occupied zone of0.25m/s and 0.10m/s respectively.NC level = peak level on noise criteriacurves based on Sound Power Level less8dB room absorption

Exhaust & OBSS corrections

Supply diffuser + 0dB Pa x 1.0Supply diffuser + OBSS + 3dB Pa x 1.0Exhaust diffuser + 3dB Pa x 1.1Exhaust diffuser + OBSS +13dB Pa x 1.15Performance Table

-

1.0 - 1.551

-

1.0 - 1.567

-

1.0 - 1.5101

-

1.5 - 2.0118

-

2.0 - 2.5135

225x

150

300x

150

450x

150

DF DE

9

Total pressuredrop (Pa)

Lw

l/s

-1.0 - 2.5

68

-1.5 - 3.5

90

-2.0 - 4.0

135

202.5 - 4.5

158

203.0 - 5.0

180

15

Lw

l/s

-1.5 - 3.5

-2.0 - 3.5

252.5 - 5.0

253.0 - 5.5

253.5 - 6.0

23

Lw

-2.0 - 3.5

252.0 - 4.5

252.5 - 6.0

303.0 - 6.5

303.5 - 7.0

33

Lw

252.0 - 4.5

118

252.5 - 5.0

158

303.5 - 6.5

236

-

1.0 - 1.584

375x

150

-2.0 - 3.5

113

202.0 - 4.5

242.5 - 5.0

303.0 - 6.0

197

304.0 - 7.0

275

354.5 - 7.5

315

43

Lw

l/s

525x

150

600x

150

-

1.0 - 2.0101

-

1.0 - 2.0127

-2.0 - 3.5

135

202.0 - 3.5

169

252.0 - 4.5

252.0 - 1.5

252.5 - 5.0

303.0 - 6.5

352.5 - 6.0

236

353.5 - 7.5

295

300x

225

375x

225

-

1.0 - 2.0153

252.5 - 4.0

203

302.5 - 5.0

353.5 - 7.0

354.0 - 8.0

354

450x

225

-

1.0 - 2.0177

-

1.5 - 2.51.0 - 2.0 1.0 - 2.5 1.5 - 3.5 2.0 - 4.0 2.5 - 4.51.5 - 3.0 1.0 - 2.5 1.5 - 3.0 2.0 - 3.5 2.0 - 4.0 2.5 - 4.5

203

252.5 - 5.0

237

253.0 - 5.5

1.0 - 2.0 1.0 - 2.0 1.0 - 2.0 1.5 - 2.5 2.0 - 3.01.0 - 2.0 1.0 - 2.5 1.0 - 2.5 1.0 - 2.5 1.0 - 2.5 1.5 - 3.0271

303.0 - 6.0

303.5 - 6.5

1.0 - 2.5 1.0 - 2.5 1.0 - 2.5 1.5 - 3.0 2.0 - 3.51.0 - 2.5 2.0 - 3.5 2.0 - 3.5 2.0 - 3.5 2.0 - 3.5 2.5 - 4.084 113 169 197 225l/s 140 169 211 253 295 337

354.0 - 7.5

354.5 - 8.0

1.5 - 3.0 1.5 - 3.0 1.5 - 3.0 2.0 - 3.5 2.5 - 4.01.5 - 3.0 2.0 - 4.0 2.0 - 4.0 2.0 - 4.0 2.0 - 4.0 2.5 - 4.5101 135 202 236 270l/s 169 202 253 303 354 404

354.5 - 8.5

413

355.0 - 9.0

2.0 - 3.5 2.0 - 3.5 2.0 - 3.52.0 - 3.5 2.5 - 4.0 3.0 - 4.5 2.0 - 4.5 2.0 - 4.5 2.0 - 4.5 2.0 - 4.5 2.5 - 5.0472

525x

225

600x

225

SupplyCore 42

-

1.0 - 2.5169

-

1.0 - 2.5203

-

1.0 - 2.5236

20

1.5 - 3.0271

20

2.0 - 3.5253

375x

300

450x

300

525x

300

9

Total pressuredrop (Pa)

Lw

l/s

252.0 - 4.5

225

252.5 - 5.0

270

252.5 - 6.0

315

253.0 - 6.5

360

252.5 - 5.0

338

15

Lw

l/s

302.5 - 5.0

281

303.0 - 6.0

338

303.5 - 6.5

394

304.0 - 7.0

441

303.5 - 6.5

422

23

Lw

l/s

303.5 - 6.5

354.0 - 8.0

354.0 - 8.0

354.5 - 8.5

354.0 - 7.5

33

Lw

354.0 - 7.5

394

354.5 - 8.0

473

405.0 - 9.5

551

404.5 - 8.5

630

404.5 - 9.0

590

43

Lw

l/s

600x

300

450x

375

20

2.0 - 3.5296

25

2.5 - 4.0339

302.5 - 6.0

394

303.0 - 6.5

450

353.5 - 7.5

492

354.0 - 8.0

562

354.5 - 8.5

405.0 - 9.0

405.0 - 10.5

689

405.5 - 11.0

788

525x

375

600x

375354

472

591

827

525x

450406

2.0 - 3.5 2.0 - 3.5 2.0 - 4.5 2.5 - 5.0 2.0 - 4.0 2.0 - 4.5 2.5 - 5.0

474

5402.0 - 3.5 2.0 - 3.5 2.0 - 3.5 2.5 - 4.0 2.0 - 4.5 2.0 - 4.5 2.5 - 5.0

629

6752.0 - 4.0 2.0 - 4.5 2.0 - 4.5 2.5 - 5.0 2.5 - 5.5 2.5 - 5.5 3.0 - 6.0

785

2.5 - 5.0 2.5 - 5.0 2.5 - 5.0 3.0 - 5.5 3.5 - 6.5 3.5 - 6.5 4.0 - 7.0338 405 473 540 506l/s 591 674 709 810 942

9453.0 - 6.0 3.0 - 6.0 3.0 - 6.0 3.5 - 5.5 4.0 - 7.5 4.0 - 7.5 4.5 - 8.0

25

2.0 - 4.0

303.0 - 6.0

354.0 - 7.5

404.5 - 9.0

405.0 - 10.5

2.5 - 5.0

2.5 - 5.0

3.5 - 6.5

4.0 - 8.0

4.5 - 9.0

25

2.0 - 4.0

303.5 - 7.0

354.5 - 8.5

405.0 - 10.0

456.0 - 12.0

2.5 - 5.0

2.5 - 5.0

3.5 - 6.5

4.0 - 8.0

4.5 - 9.0

25

2.5 - 4.5

54.0 - 7.5

405.0 - 9.0

405.5 - 10.5

456.5 - 12.5

3.0 - 5.5

3.0 - 5.5

4.0 - 7.0

4.5 - 8.5

5.0 - 9.51103

600x

450

600x

525

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

S Min - Max (m)L Min - Max (m)

L

L

S S

S = Short side throwL = Long side throw

Waterloo

Page 33: Diffusers Total

Waterloo 2.0 33 Tel: +44 (0) 1622 711511

Louvred Face DiffusersDFA core 41

-0.5 - 1.0

34

-0.5 - 1.5

76

-1.5 - 2.5

135

-1.5 - 2.5

211

150x

150

225x

225

300x

300

DFA41

Lw

l/s

11 11 11 11Pa

21 21 21 21Pa

32 32 32 32Pa

47 47 47 47Pa

65 65 65 65Pa

Min - Max (m)

-0.5 - 1.5

45

-1.0 - 2.0

101

201.5 - 3.0

180

251.5 - 3.0

282

Lw

l/sMin - Max (m)

201.0 - 2.0

56

221.5 - 2.5

127

261.5 - 3.0

225

312.0 - 4.0

352

Lw

l/sMin - Max (m)

271.0 - 2.5

68

271.5 - 3.0

152

332.0 - 4.0

270

372.5 - 5.0

422

Lw

l/sMin - Max (m)

321.5 - 2.5

79

331.5 - 3.0

177

382.5 - 4.5

315

413.0 - 5.5

492

Lw

l/sMin - Max (m)

375x

375

Horizontal diffusion(Cones fully lowered)

∆t = 10˚C cooling

-2.034

-2.376

-2.4135

202.7211

150x

150

225x

225

300x

300

DFA41

Lw

l/s

21 17 17 17Pa

37 30 30 30Pa

60 47 47 47Pa

87 67 67 67Pa

122 90 90 90Pa

Projection

Projection

Projection

Projection

Projection

222.745

213.3101

233.6180

273.9282

Lw

l/s

283.456

284.1127

314.8225

345.1352

Lw

l/s

354.168

344.7152

375.8270

406.2422

Lw

l/s

104.879

405.4177

436.6315

447.3492

Lw

l/s

375x

375

-6.334

-9.476

-12.5135

2015.6211

150x

150

225x

225

300x

300

DFA41

Lw

l/s

21 17 17 17Pa

37 30 30 30Pa

60 47 47 47Pa

87 67 67 67Pa

122 90 90 90Pa

Projection

Projection

Projection

Projection

Projection

228.345

2112.5101

2316.7180

2720.8282

Lw

l/s

2810.756

2816.1127

3121.5225

3426.8352

Lw

l/s

3513.668

3420.5152

37-

270

40-

422

Lw

l/s

4015.079

40-

177

43-

315

44-

492

Lw

l/s

375x

375

Heating vertical projection(Cones fully raised)

∆t = 10˚C heating (correct for other temp.)

Isothermal vertical projection(Cones fully raised)

Selection ExampleDFA41/300x300Horizontal DiffusionAir flow rate 225 l/sThrow 1.5 - 3.0mTotal Pressure Loss 21 PaNoise level NC20

Selection CriteriaCeiling height 2.7 mTemperature differential -10KRadius of diffusion - Minimum and maximumthrow which results in an average airvelocity within the occupied zone of0.25m/s and 0.10m/s respectively.NC level = peak level on noise criteriacurves based on Sound Power Level less8dB room absorption

Exhaust & OBSS corrections

Supply diffuser + 0dB Pa x 1.0Supply diffuser + OBSS + 3dB Pa x 1.0Exhaust diffuser + 3dB Pa x 1.1Exhaust diffuser + OBSS +13dB Pa x 1.15

Terminal Velocities For Isothermal Vertical Projection

Vt (m/s) 0.25 0.40 0.60Factor 1.00 0.65 0.40

Temperature Differentials For Heating Vertical Projection

∆t (°C) 5 10 15 20 25 30Factor 1.5 1 0.85 0.7 0.6 0.5

Performance Tables

Waterloo

Page 34: Diffusers Total

100

H

WL

Waterloo 2.0 34 Tel: +44 (0) 1622 711511

Louvred Face DiffusersPlenum Chambers and Neck Reducers

IntroductionCorrect selection and sizing of distribution plenumchambers and neck reducers is critical becauseterminal air resistance is very low relative to thedistribution ductwork resistance. It is thereforerecommended that whenever possible terminalsare served by low velocity stub ducts from branchducting systems fitted with correct balancing controls.Where it is necessary to specify and use plenums agenerous allowance for commissioned noise generationshould be made. A similar effect results from use ofneck reducers with circular duct connections becausethe reduced duct area will cause generally highervelocities and hence increased risk of noise generation.

Product DescriptionPBD Plenum chamberNR-D Top entry neck reducer

Features• Plated steel with stitched seam joints.• Plenums are available with circular, square or

rectangular spigots in either top or side entryapplications

• Neck reducers are available with circular, square orrectangular spigots in top entry only

InstallationThe plenum boxes and neck reducers are supported by4 drop rods through a locating hole positioned neareach corner.

When ordering plenum chambers please specify lengthwidth & height, spigot size and position (top or sideentry) and control options. Please note that the plenumheight should in general be 100mm greater that thespigot diameter (side entry applications).

Neck reducers are available as standard in sizes up to1200 x 600. The high profile is designed toaccommodate an opposed blade damper.

Plenum chambersPressure loss: multiply diffuser pressure loss by 1.25NR level: based on peak sound power level less 8dBroom absorption allowanceNote: Actual spigot size = nominal - 3mm

Neck reducersPressure loss and noise levels should be based on thespigot air velocity and the nominal diffuser size, ie. if a450 sq neck diffuser handling 200 l/s is fitted with aneck reducer having a 315Ø spigot, the inlet airvelocity is approximately 2.5 m/s. Referring to theselection tables, at the equivalent air velocity throughthe diffuser neck the noise level would be NC33 andthe pressure loss 23Pa.Throw: use catalogue data providing that the ratio ofdiffuser to neck size remains less than 1.5:1.

Diffuser Nominal Diffuser + Plenum + Open OBSS ActualNeck Spigot Maximum flow rate to achieve PlenumSize Size stated noise levels (l/s) Dimensions(mm) (mm) NR25 NR30 NR35 NR40 NR45 L W H

150x150 150Ø 45 55 65 80 95 150 150 250

225x225 200Ø 75 100 125 150 175 225 225 300225x150 200Ø 60 80 100 115 130 225 150 300

300x300 250Ø 140 170 210 260 310 300 300 350300x225 250Ø 90 130 170 210 240 300 225 350300x150 250Ø 85 110 135 160 185 300 150 350

375x375 350Ø 210 240 290 355 430 375 375 450375x300 350Ø 160 210 260 330 400 375 375 450375x225 350Ø 125 170 215 270 330 375 375 450375x150 350Ø 120 140 170 210 260 375 375 450

450x450 400Ø 230 310 400 500 650 450 450 500450x375 400Ø 220 280 355 450 590 450 450 500450x300 400Ø 190 260 330 410 490 450 450 500

525x525 500Ø 290 410 540 670 840 525 525 600525x450 500Ø 280 380 490 610 810 525 525 600525x375 500Ø 275 360 460 580 690 525 525 600525x300 500Ø 235 315 380 480 590 525 525 600

600x600 500Ø 530 620 700 850 1020 600 600 600600x450 500Ø 380 450 540 660 850 600 600 600600x300 500Ø 350 410 460 560 680 600 600 600

Waterloo

PBD Side entry plenum box

NR-D Neck reducer

Page 35: Diffusers Total

Waterloo 2.0 35 Tel: +44 (0) 1622 711511

Louvred Face DiffusersCore Configuration Summary

Waterloo

Page 36: Diffusers Total

Waterloo 2.0 36 Tel: +44 (0) 1622 711511

Aircell DiffusersM300 M450 M500 M600 M625

Order Example Aircell M300/O300/P300/F300/BM300TypeDamperPlenumFixing KitBlanking Kit

IntroductionThe Waterloo Aircell M series presents all the costand design advantages of the 2000 series withthe visual appeal of clean, unbroken lines on thetraditional multicone design.The diffusers are available in a range of 5 sizesto integrate with standard 300mm and 600mmceilings and the 500mm and 625mm Europeansystems.

Product DescriptionM300 300 sq diffuserM450 450 sq diffuserM500 500 sq diffuserM600 600 sq diffuserM625 625 sq diffuserO Black polymer opposed blade damperP Black polymer plenum boxF Fixing kitBM Blanking kitR600 Reducer with 312Ø spigot

Features• Contemporary style designed for visual

integration with luminaires and other ceilingelements

• Ease of installation with concealed, single pointfixing into P series plenum or rigid ducting

• Full range of integrated accessories availableincluding directional or core blanking kits,universal plenums and opposed blade dampers

FinishesDiffusers are self-coloured whiteDamper and plenum are self-coloured black

WeightsM300 0.6 kgM450 1.4 kgM500 1.6 kgM600 2.6 kgM625 2.8 kg

AuthorityPatents: 2221530, 2223840, 8818337 otherspendingRegistered Designs: 1052716, 106216Fire Rating: BS476 Pt 7 Class 0. BS476 Pt 5,P Rating. BS 2782 Method 508A, Zero Rate ofBurn.

Performance tested to BS4773 1991, ISO 5219.

Maximum supply air temperature mustnot exceed 50°C.

Aircell M A B C D E FM300 6 230 36 56 296 235M450 6 307 36 56 446 375M500 6 307 36 56 496 375M600 6 456 36 56 596 525M625 6 456 36 56 621 525

Waterloo

Page 37: Diffusers Total

Waterloo 2.0 37 Tel: +44 (0) 1622 711511

Aircell DiffusersM300 M450 M500 M600 M625

Extract Extract Extract

3333

3643

2315

2823

2143

-23

-9

1.0

-331.6

-151.2

1.5

20341.7

-331.6

M300 M450M500

Supply Supply

2.0

2.0-9

1.5

2.2

2.5

3.03636

3947

2617

3125

2110

2925

3535

-8

2315

1.3

2.0

2.3

2.7

3333

-9

-12

1.5-7

1.3

1.7

2.5

2823

-9

2315

1.5

2.0

2.2

33332.5

36433.0

259

3215

3723

M600M625 M300 M450

M500M600M625

Supply

2.0

2.5

3.5

M

315

270

225

180

135

405

40334.0

44434.5

2810

3517

4025

4336

4747

227

2812

3215

1.8

2.2

2.5

39253.6

42384.3

2712

3517

3826

2.2

2.8

3.7

41354.1

259

3826

2.0

3.7

45444.6

506

608

79

68

56

LwPs34T

LwPsT

LwPsT

LwPsT

LwPsT

LwPsT

LwPsT

LwPsT

LwPsT

LwPsT

LwPsT

LwPsT

LwPsT

709LwPsT

-151.2

2447

-25

-10

2136

-17

-231.5

45

I/s

Selection ExampleAircell M450Air Flow Rate 180 l/sThrow 2.0 mStatic Pressure Loss 15 PaNoise level NR23

Selection CriteriaCeiling Height 2.7 mTemperature Differential -10KAverage room velocity vr 0.25 m/sNR level = peak level on noise rating curvesbased on Sound Power Level less8dB room absorption

All performance data includes theplenum box

Performance Table

4 way 3 way 2 way 2 way 1 way

Blanking arrangements

Waterloo

Note: Sizes are overall

Copyright:Waterloo Air Products2005

Page 38: Diffusers Total

Waterloo 2.0 38 Tel: +44 (0) 1622 711511

Aircell Diffusers2300 2600

IntroductionThe Waterloo Aircell 2000 series presents acontemporary diffuser style combining highperformance and robust construction with thesignificant cost advantage of injection mouldedengineering polymers.The diffusers are available in 2 sizes to integratewith standard 300mm or 600mm lay-in orconcealed ‘T’ ceiling systems.

Product Description2300 300 sq diffuser2600 600 sq diffuserO Black polymer opposed blade damperP Black polymer plenum boxF Fixing kitB Blanking kit

Features• Contemporary style designed for visual

integration with luminaires and other ceilingelements

• Ease of installation with concealed, single pointfixing into P series plenum or rigid ducting

• Full range of integrated accessories availableincluding directional or core blanking kits,universal plenums and opposed blade dampers

FinishesDiffusers are self-coloured whiteDamper and plenum are self-coloured black

Weights2300 0.6 kg2600 3.2 kg

AuthorityPatents: 2221530, 2223840, 8818337 others

pendingRegistered Designs: 1052716, 106216Fire Rating: BS476 Pt 7 Class 0. BS476 Pt 5,

P Rating. BS 2782 Method 508A,Zero Rate of Burn.

Performance tested to BS4773 1991, ISO 5219.

Maximum supply air temperature mustnot exceed 50°C.

Order ExampleAircell 2300/O300/P300/F300/B300

TypeDamperPlenumFixing kitBlanking kit

Aircell 2000 A B C D E F2300 3 229 41 53 296 2692600 6 459 31 56 596 546

Waterloo

Page 39: Diffusers Total

Waterloo 2.0 39 Tel: +44 (0) 1622 711511

Aircell Diffusers2300 2600

Selection ExampleAircell 2300-4Air Flow Rate 75 l/sThrow 1.1 mStatic Pressure Loss 17 PaNoise level NR22

Selection CriteriaCeiling Height 2.7 mTemperature Differential -10KAverage room velocity vr 0.25 m/sNR level = peak level on noise rating curvesbased on Sound Power Level less8dB room absorption

All performance data includesthe plenum box

4 way 3 way 2 way 2 way 1 way

Blanking arrangements

2000 Supply

Air Volume 2300l/s m3/h 4 way 3 way 2 way 1 way

25 90T (m) 0.6 0.7 0.8 1.7

Ps 2 5 8 28Lw - - - 30

50 180T (m) 0.8 1.4 1.7

Ps 8 17 28Lw - 20 30

75 270T (m) 1.1 1.7 2.3

Ps 17 28 60Lw 22 30 41

100 360T (m) 1.7 2.2

Ps 28 50Lw 30 38

125 450T (m) 2.0 2.5

Ps 44 66Lw 36 43

150 540T (m) 2.3

Ps 60Lw 41

200 720T (m)

PsLw

250 900T (m)

PsLw

300 1080T (m)

PsLw

350 1260T (m)

PsLw

400 1440T (m)

PsLw

Supply

2600

4 way 3 way 2 way 1 way

0.910201.82231

0.9 2.510 4020 38

0.3 0.7 1.44 8 15- - 26

0.5 0.9 1.86 10 22- 20 31

0.9 1.6 2.510 18 4020 28 381.4 2.115 2826 331.8 2.522 4031 382.230352.54038

Exhaust

2300 2600

4-

1519

3029

5035

7540

100 645 -

12-

2020

2927

4132

5437

Waterloo

Copyright:Waterloo Air Products2005

Note: Sizes are overall

Performance Table

Page 40: Diffusers Total

Waterloo 2.0 40 Tel: +44 (0) 1622 711511

PerformanceThe unique integrated design of the plenum, damper anddiffuser assembly has been specifically developed topromote smooth flow lines, ensuring an exceptionalaerodynamic and acoustic performance.

Aircell products can be used in any air distributionsystems where temperatures do not exceed 50° C.

The components have been tested to BS4773 Parts 1 & 2to provide comprehensive, easy to use selection data forall installation options.

Opposed Blade Damper Type ‘O’The ‘O’ series opposed blade damper is designed tointegrate with the plenum and diffuser range to provide asimple means of flow regulation from the diffuser face.

The unit is designed to snap fit into the universal plenum,or alternatively can be easily screw or rivet fixed intosteel ducting using the inbuilt mounting lugs.

Manufactured in black engineering grade polymer, thedamper is inherently smooth and positive in operation.

WeightsO300 0.5 kg

O450 1.0 kgO600 2.2 kg

Plenum Type ‘P’The ‘P’ series plenum is aerodynamically profiled toprovide ideal flow conditions with either top or side entryduct arrangements.

Manufactured in black engineering grade polymer, thedesign incorporates features such as internal guide vanesto reduce air turbulence, and snap-in locks to retain theopposed blade damper and diffuser mounting bar.

The plenum can be fixed to the ceiling grid or suspendedby drop rods from the slab. Either fixing method iscarried out using patented mounting brackets whichsimply slide into the plenum retaining slots.

WeightsP300 0.7 kg

P450 1.0 kgP600 1.7 kg

Neck Reducer R600The R600 snap-fit neck reducer is available as an optionto convert the P600 plenum spigot from 397Ø to 312Ø.

A

B

B

ØE

50

7 7

50

Ø312

Do/s stack

Ø400

C

Type 'O' damper

Type 'P' plenum

R600 neck reducer

Model A B C D EO300 41 215 - - -O450 41 290O600 41 440 - - -P300 - - 245 224 197P450 - - 277 299 247P600 - - 366 449 397

Aircell DiffusersControls and Fixing Options

Waterloo

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Waterloo 2.0 41 Tel: +44 (0) 1622 711511

Aircell DiffusersInstallation and Specification

Aircell diffuser

InstallationParticular attention has been paid to theinstallation method to minimise site fixing time.The plenum is easily installed using the slide-inbrackets as support legs from above the ceiling‘T’, or with drop rods from the slab. The damperand diffuser support bar can then be clipped inplace, with the diffuser finally being secured bythe single centre fixing screw.

SpecificationCeiling diffusers shall be Aircell 2000 seriesmanufactured from injection moulded engineeringpolymer, in self-coloured white as standard.Overall diffuser size shall be nominally 300 or600mm to suit standard ceiling grids.

A captive centre line polymer fixing bolt andmetal fixing bracket kit shall be provided.

Directional blanking is obtained with snap-inplates to provide 1, 2 or 3 way air patterns orreduced area blanking.

Opposed blade dampers (type ‘O’) ismanufactured from injection moulded engineeringpolymer in self-coloured black as standard,operable through the diffuser face.

Plenum box (type ‘P’) is manufactured frominjection moulded engineering polymer of auniversal design and in self-coloured black,incorporating guide vanes and bracket locationslots.

Z

Y

X min

WDuct or Plenum

Diffuser

Damper

W = Damper depthX = Ceiling opening (+5 -0) Y = Face of T bar to underside of Duct or Plenum (+0 -10)Z = Underside of duct to underside of damper

Model W X Y Z2300 45 269 41 882600 45 546 41 88

Universal plenumtype P

Face operated opposedblade damper type O

Diffuser fixing brackettype F - for fixing troplenum or duct

Captive fixing bolt

Removable core

Waterloo

Note:Specially designed clipsmean that you can use atype ‘O’ damper with adiffuser without auniversal Plenum.

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Waterloo 2.0 42 Tel: +44 (0) 1622 711511

Laminar Flow DiffusersLFF LFMIntroductionLF diffusers have been designed for use in clean rooms,laboratories, operating theatres, or other applicationswhere critical control of room air movement is necessary.They are also suitable for less critical applications suchas animal rooms or kitchens where a vertical flow patternmay be required.The laminar air pattern is achieved by use of a primarybaffle within the plenum chamber and a low free areaperforated discharge plate at the face of the diffuser.The diffusers are available with either a flanged framestyle (type LFF) to suit conventional exposed or concealed‘T’ ceilings, or, with a flangeless frame (type LFM)suitable for modular panel constructions.The LFM units can be supplied with a perimeter trim stripto suit the overall dimensions of the panel assembly.Support brackets and mounting plates can also bemanufactured to fit suspended light bases used inoperating theatres.The units are available in three standard sizes withoptions for top, side, or end entry inlet spigots and screwoperated louvre dampers.

DescriptionLF laminar flow diffusers are constructed from aluminiumextruded frames and assembled using welding andsoldering techniques to form a robust construction.The perforated aluminium face plate can be easilyremoved for cleaning using the hook tool provided.Plenum chambers are manufactured from galvanisedsheet steel, with all exposed edges and spot weldsprotected.

Product DescriptionLFF Laminar flow panel with flanged frameLFM Laminar flow panel with modular flangeless frame LD Louvre damper

Features• Two frame styles and sizes to suit 600mm and I200mm

‘T’ ceilings or modular panel assemblies.• Side, top, or end entry spigot connections with

optional spigot mounted louvre damper.• Pivoting, removable face plate for easy maintenance.• Easy clean aluminium face plate and frame with

durable polyester powder coating.

FinishesPPM9006 (RAL 9006 Matt Silver)PPM9010 (RAL 9010 20% Gloss White)PPG9010 (RAL 9010 Gloss White)Other colours available on request

Order Example

LFM/900x600/TE/PPM9010/LDTypeNominal WidthNominal HeightSpigot LocationFinishDamper (if required)

Type Unit size W x H ØD A

LFM 600 x 600 600 x 600 197 120LFM 900 x 600 900 x 600 197 120LFM 1200 x 600 1200 x 600 312 165LFF 600 x 600 598 x 598 197 120LFF 1200 x 600 1198 x 598 312 165

Waterloo

Free Area

23%

Optional LD

25

150

ØD o/s

75

Ceiling opening size = W/H -20

ØD

o/s

A75

W x H Overall

W x H Overall

Optional LD

1326

160

ØD o/s

7075

A

ØD

o/s

75A

W x H Overall

W x H Overall

ØD

+ 1

35A

ØD

+ 1

25

LFM-TE = Top Entry

LFF-TE = Top Entry

LFM-SE = Side EntryLFM-EE = End Entry

LFF-SE = Side EntryLFF-EE = End Entry

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Waterloo 2.0 43 Tel: +44 (0) 1622 711511

Laminar Flow DiffusersLFF LFM

Performance Tables

Selection CriteriaLaminar flow diffuser airstreams arecharacterised by the tendency to reduce insectional area from the point of discharge,particularly with high cooling differentials.Although this produces a slight initial increase inthe core velocity, friction between the airstreamboundary and the static room air offsets this, thenet result being to maintain a near constant airvelocity at distances up to 2.5m from the face.This characteristic is reflected in the datapresentation of tables 1 and 2 which giveinformation on the face discharge velocity andthe average airstream velocity over thisdistance. The discharge velocity is based on anaverage number of vane anemometer readings

at the face plate, whilst the airstream velocity isderived from time averaged readings with a 15probe array at distances of 1m and 2m fromthe face. In the case of the latter, data is givenfor cooling differentials of 3°C, 5°C and 10°C.The temperature diffusion data presented intable 3 can be used to determine theapproximate airstream temperature by addingthe indicated temperature rise to the dischargeair temperature.The acoustic data shown in table 5 is presentedin terms of sound power based NR levels. Toobtain the resulting NRlp level in the occupiedzone, room absorption factors should beapplied as appropriate to the installationconditions.

D

Face dischargevelocity (table 1)

Reduction in airstreamsection area increasesvelocity

Near constantairstream velocityup to 2.5m fromdiffuser face(table 2)

Waterloo

Table 1. Average Face Air Velocity

LFM LFF Air Flow Rate

Unit size

m3/h 72 108 144 180 216 288 360 432 504 576 648 720l/s 20 30 40 50 60 80 100 120 140 160 180 200

600x600 0.05 0.10 0.13 0.17 0.21 0.30 0.37900x600 0.05 0.07 0.10 0.13 0.18 0.24 0.301200x600 0.05 0.06 0.11 0.15 0.19 0.24 0.28 0.32 0.37

Table 2. Average Airstream VelocityLFM LFF Air Flow Rate

Unit size

m3/h 72 108 144 180 216 288 360 432 504 576 648 720l/s 20 30 40 50 60 80 100 120 140 160 180 200DT

600x600-3 °C 0.09 0.11 0.13 0.16 0.20 0.26 0.33-5 °C 0.09 0.12 0.15 0.20 0.25 0.31 0.36-10 °C 0.10 0.13 0.15 0.25 0.32 0.41 0.45

900x600-3 °C 0.07 0.09 0.11 0.12 0.14 0.16 0.22 0.25-5 °C 0.07 0.10 0.13 0.17 0.20 0.25 0.29 0.32-10 °C 0.08 0.11 0.15 0.20 0.24 0.31 0.36 0.40

1200x600-3 °C 0.05 0.07 0.09 0.10 0.14 0.22 0.26 0.29 0.31-5 °C 0.05 0.07 0.10 0.12 0.16 0.25 0.30 0.35 0.39-10 °C 0.05 0.10 0.14 0.23 0.30 0.38 0.42 0.45 0.47

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Waterloo 2.0 44 Tel: +44 (0) 1622 711511

Laminar Flow DiffusersLFF LFM

Performance Tables

Selection ExampleDiffuser selection criteria will be dependent on theapplication, but as a general guide most sedentaryoccupants would be tolerant of airstream velocitiesup to 0.25m/s if the air temperature is 1-2°C belowthat in the room. In applications where there areconcentrated heat sources or where the occupantsare mostly transitory, this can generally beincreased to 0.35 - 0.5m/s.As an example, consider the use of a 1200 x 600diffuser in an operating theatre where the coolingdifferential is to be 5°C with a supply airtemperature of 17°C.

Reference to table 2 shows that the maximum airflow rate to achieve an average airstream velocityof 0.25m/s would be 140l/s.

Airstream temperatures at distances of 1m and 2mfrom the diffuser face can be found from table 3; inthis case, at 140l/s, the supply air temperature willrise by 3.5°C and 4.5°C respectively, givingmoving air temperatures of 20.5°C and 21.5°C atthe two heights.The diffuser noise level can be found from table 5,which, assuming a fully open damper, would beless than NRlw20 at 140l/s.

Waterloo

Table 3. Airstream Temperature Rise (°C)

LFM LFF Air Flow Rate

Unit size DT

m3/h 72 108 144 180 216 288 360 432 504 576 648 720l/s 20 30 40 50 60 80 100 120 140 160 180 200D

600x

600

-3°C1m 2.5 2.5 2.5 2.5 2.0 2.0 1.02m 3.0 3.0 3.0 3.0 2.5 2.5 2.0

-5°C1m 4.5 4.5 4.5 4.0 3.5 3.0 2.52m 5.0 5.0 5.0 4.5 4.0 3.5 3.0

-10°C1m 8.5 8.0 8.0 8.0 7.5 6.5 6.02m 9.5 9.5 9.5 9.0 8.5 8.0 7.0

900x

600

-3°C1m 3.0 3.0 3.0 3.0 2.5 2.5 2.0 1.52m 3.0 3.0 3.0 3.0 3.0 2.5 2.5 2.0

-5°C1m 5.0 4.5 4.5 4.5 4.0 3.5 3.0 2.52m 5.0 5.0 5.0 5.0 4.5 4.5 4.0 3.5

-10°C1m 10.0 9.5 9.5 9.0 8.5 8.0 7.0 5.52m 10.0 10.0 9.5 9.5 9.0 8.5 8.0 7.0

1200x

600

-3°C1m 3.0 3.0 3.0 2.5 2.5 2.0 2.0 1.5 1.02m 3.0 3.0 2.5 2.5 2.5 2.5 2.5 2.0 1.5

-5°C1m 4.5 4.5 4.5 4.0 4.0 3.5 3.0 2.5 2.02m 5.0 5.0 5.0 5.0 4.5 4.5 4.0 3.0 2.5

-10°C1m 10.0 10.0 10.0 9.5 9.0 8.0 7.5 6.5 5.52m 10.0 10.0 10.0 9.5 9.5 9.0 8.5 8.0 7.0

Table 4. Diffuser Static Pressure Loss (Pa) (open damper)

LFM LFF Air Flow Rate

Unit sizem3/h 72 108 144 180 216 288 360 432 504 576 648 720l/s 20 30 40 50 60 80 100 120 140 160 180 200

600x600 1 1 1 2 2 4 5900x600 1 1 1 2 2 4 5 71200x600 1 1 1 2 2 3 3 4 4

Table 5. Acoustic Data (Noise Level) (NR) (open damper)

LFM LFF Air Flow Rate

Unit sizem3/h 72 108 144 180 216 288 360 432 504 576 648 720l/s 20 30 40 50 60 80 100 120 140 160 180 200

600x600 <20 20 24 28900x600 <20 23 27 301200x600 <20 <20

Page 45: Diffusers Total

Waterloo 2.0 45 Tel: +44 (0) 1622 711511

Laminar Flow DiffusersLFF LFM

FACE PLATE

LFM - Flangeless frame

LFF - Flanged frame

MODULAR ASSEMBLYPRE-DRILLED FRAMES FOR

SIDE ENTRY SPIGOTSOPTIONAL TOP, END OR

OPTIONAL LOUVRE DAMPER

Ø8mm HOLESFOR DROP SUPPORT

Ø8mm HOLESFOR DROP SUPPORT

REMOVAL TOOL

LINK PLATES

Waterloo

Page 46: Diffusers Total

Waterloo 2.0 46 Tel: +44 (0) 1622 711511

IntroductionThe Waterloo CPD range of diffusers have beendesigned for use in commercial applications andare particularly suited to projects with high airchange rates and high cooling differentials.CPD diffusers are suitable for installation in 300,600 and 1200mm tile module systems and therange includes square and rectangular types.The aluminium face plate may be pivoted downand removed to ease installation, commissioningand maintenance and is held closed by springclips.The diffusers are constructed from aluminiumextruded frames and perforated face plates withplated steel, square, rectangular and circularconnections suitable for top entry ducts.

Product DescriptionCPD2 2 way perforated face supply diffuserCPD3 3 way perforated face supply diffuserCPD4 4 way perforated face supply diffuserCPDE Exhaust air perforated face diffuserOBSS Opposed blade damper for square /

rectangular connectionsLD Louvre damper for circular connections

Features• Integrate with 300, 600 and 1200mm tile sizes

• All aluminium face construction

• Pivoting, removable face plate

• Range of four sizes

• High air handling capacity

• Supply or exhaust diffusers visually compatible

FinishesPPM9006 (RAL 9006 Matt Silver)PPM9010 (RAL 9010 20% Gloss White)PPG9010 (RAL 9010 Gloss White)Other colours available on request

Type Unit size W x H ØD A x B Weight (kg)

CPD 300 x 300 295 x 295 147 147 x 147 2.0CPD 600 x 600 595 x 595 297 297 x 297 3.4CPD 600 x 300 595 x 295 — 297 x 147 2.8CPD 1200 x 600 1195 x 595 — 597 x 297 6.5CPDE 300 x 300 295 x 295 — 147 x 147 2.0CPDE 600 x 600 595 x 595 — 447 x 447 3.4CPDE 600 x 300 595 x 295 — 447 x 147 2.8CPDE 1200 x 600 1195 x 595 — 597 x 297 6.5

A x B o/snominal duct size

CPD/OBSS

H - 52

ØD o/snominal duct size

CPD/LD

Ceiling opening = H - 20

132

72

W o/a

W - 52

H o

/a

H -

52

5

Perforated Face DiffusersCPD CPDE

Waterloo

Free Area

54%

Order Example

CPD/4/300x300/150 DIA/PPM9010/LDTypePatternNominal WidthNominal HeightSpigot SizeFinishDamper

Page 47: Diffusers Total

Waterloo 2.0 47 Tel: +44 (0) 1622 711511

Perforated Face DiffusersCPD CPDE

Performance Tables

Selection ExampleCPD4/300x300/150Air Flow Rate 88 l/sThrow 0.8 - 1.9mStatic Pressure Loss 7 PaNoise Level NR 33

Selection CriteriaCeiling height up to 2.8 mRadius of diffusion is based on terminalvelocities of 0.75 m/s (minimum) and0.10 m/s (maximum) to achieve meanroom air velocities of 0.25 m/s and0.10 m/s respectively.NR level is based on diffuser soundpower level less 8dB room absorption. Square Neck Supply Diffuser Corrections

CPD/300x300/150 x 150 as 150Ø - 6dB Pa x 0.65CPD/600x600/300 x 300 as 300Ø - 6dB Pa x 0.65

Waterloo

CPD 4 way 3 way

Sizes 300x300 600x600 600x300 1200x600 300x300 600x600 600x300Spigot size Ø150 Ø300 300x150 600x300 Ø150 Ø300 300x150

Air Flow Ratem3/h 126 508 324 1296 126 508 324l/s 35 141 90 360 35 141 90

Throw Short Side Min.-Max. [m] 0.2-0.5 1.0-2.3 0.8-1.8 1.0-3.2 0.3-0.6 1.0-2.3 0.8-1.8Throw Long Side Min.-Max. [m] - - 1.0-2.3 1.7-4.0 - - 1.0-2.3Noise Level [NR] - 18 16 31 16 19 19Static Pressure Loss [Pa] 1 3 4 18 2 3 4

Air Flow Ratem3/h 191 763 486 1944 191 763 486l/s 53 212 135 540 53 212 135

Throw Short Side Min.-Max. [m] 0.4-0.9 1.5-3.6 1.3-3.1 1.8-4.0 0.5-1.1 1.5-3.6 1.3-3.1Throw Long Side Min.-Max. [m] - - 1.9-4.4 2.6-5.0 - - 1.9-4.4Noise Level [NR] 22 27 28 42 24 28 26Static Pressure Loss [Pa] 3 6 4 40 4 6 9

Air Flow Ratem3/h 252 1015 648 2592 252 1015 648l/s 70 282 180 720 70 282 180

Throw Short Side Min.-Max. [m] 0.6-1.4 2.1-5.0 1.9-4.4 2.7-5.0 0.7-1.7 2.1-5.0 1.9-4.4Throw Long Side Min.-Max. [m] - - 2.8-6.6 3.3-6.0 - - 2.8-6.6Noise Level [NR] 28 36 32 51 30 36 32Static Pressure Loss [Pa] 5 10 14 70 7 11 17

Air Flow Ratem3/h 317 1282 810 3240 317 1282 810l/s 88 356 225 900 88 356 225

Throw Short Side Min.-Max. [m] 0.8-1.9 2.7-6.2 2.5-5.8 3.3-5.3 1.0-2.3 2.7-6.2 2.5-5.8Throw Long Side Min.-Max. [m] - - 3.8-8.9 4.0-6.3 - - 3.8-8.9Noise Level [NR] 33 44 40 61 35 44 40Static Pressure Loss [Pa] 7 16 21 105 10 17 26

Air Flow Ratem3/h 382 1526 972 382 1526 972l/s 106 424 270 106 424 270

Throw Short Side Min.-Max. [m] 1.1-2.6 3.3-7.7 2.9-6.9 1.3-3.0 3.3-7.7 2.9-6.9Throw Long Side Min.-Max. [m] - - 4.7-11.0 - - 4.7-11.0Noise Level [NR] 38 53 45 39 53 45Static Pressure Loss [Pa] 10 23 31 15 25 38

Air Flow Ratem3/h 446 446l/s 124 124

Throw Short Side Min.-Max. [m] 1.4-3.3 1.6-3.8Throw Long Side Min.-Max. [m] - -Noise Level [NR] 41 42Static Pressure Loss [Pa] 14 20

Air Flow Ratem3/h 508 508l/s 141 141

Throw Short Side Min.-Max. [m] 1.7-4.0 2.0-4.6Throw Long Side Min.-Max. [m] - -Noise Level [NR] 44 45Static Pressure Loss [Pa] 19 27

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Waterloo 2.0 48 Tel: +44 (0) 1622 711511

Performance Tables

Selection ExampleCPD2/300x300/150Air Flow Rate 70 l/sThrow 2.0 - 4.6mStatic Pressure Loss 13 PaNoise level NR 34

Selection CriteriaCeiling height up to 2.8 mRadius of diffusion is based on terminalvelocities of 0.75 m/s (minimum) and0.10 m/s (maximum) to achieve meanroom air velocities of 0.25 m/s and0.10 m/s respectively.NR level is based on diffuser soundpower level less 8dB room absorption. Square Neck Supply Diffuser Corrections

CPD/300x300/150 x 150 as 150Ø - 6dB Pa x 0.65CPD/600x600/300 x 300 as 300Ø - 6dB Pa x 0.65

Perforated Face DiffusersCPD CPDE

Waterloo

CPD 2 way ExhaustSizes 300x300 600x600 600x300 300x300 600x600 600x300 1200x600Spigot size Ø150 Ø300 300x150 150x150 450x450 450x150 600x300

Air Flow Ratem3/h 126 508 324 162 486 1458 1296l/s 35 141 90 45 135 405 360

Throw Min.-Max. [m] 0.8-1.8 1.4-3.3 1.1-2.5Noise Level [NR] 20 23 21 - - - -Static Pressure Loss [Pa] 3 4 6 6 6 6 6

Air Flow Ratem3/h 191 763 486 241 727 2185 1944l/s 53 212 135 67 202 607 540

Throw Min.-Max. [m] 1.3-3.1 2.3-5.4 2.5-5.8Noise Level [NR] 29 32 29 - 15 19 20Static Pressure Loss [Pa] 8 9 12 10 10 10 10

Air Flow Ratem3/h 252 1015 648 324 972 2916 2592l/s 70 282 180 90 270 810 720

Throw Min.-Max. [m] 2.0-4.6 3.2-7.6 3.8-9.0Noise Level [NR] 34 38 36 19 25 29 28Static Pressure Loss [Pa] 13 16 22 14 14 14 14

Air Flow Ratem3/h 317 1282 810 403 1213 3636 3240l/s 88 356 225 112 337 1010 900

Throw Min.-Max. [m] 2.7-6.3 4.1-9.7 5.4-12.7Noise Level [NR] 38 45 41 27 33 37 36Static Pressure Loss [Pa] 21 25 34 20 20 20 20

Air Flow Ratem3/h 382 1526 972 486 1458 4374l/s 106 424 270 135 405 1215

Throw Min.-Max. [m] 3.5-8.2 5.1-12.0 6.6-15.5Noise Level [NR] 41 53 45 33 39 43Static Pressure Loss [Pa] 30 27 50 40 40 40

Air Flow Ratem3/h 446 565 1699 5112l/s 124 157 472 1420

Throw Min.-Max. [m] 4.3-10.2Noise Level [NR] 44 38 44 48Static Pressure Loss [Pa] 40 50 50 50

Air Flow Ratem3/h 508l/s 141

Throw Min.-Max. [m] 5.0-12.2Noise Level [NR] 47Static Pressure Loss [Pa] 53

Page 49: Diffusers Total

Waterloo 2.0 49 Tel: +44 (0) 1622 711511

Perforated Face DiffusersCPD CPDE

CPD4 CPD3

CPD2 CPDE

4 way 3 way

2 way Exhaust

W - 100drop rodcentres

H - 100

drop ro

d

centres

4 Holes 9.5Øfor drop rods

Deflection Patterns

InstallationDrop rod (or tie wire) support method is recommendedfor concealed T and flush mounting options.

Nominal Deflecting Pad SizeSize (mm) CPD4 CPD3 CPD2

300x300 150x150 195x150 240x150600x600 200x200 370x200 540x200600x300 300x150 420x150 540x150

1200x600 950x200 - -

Ceiling opening =W-20 x H -20

FLUSH

600 T Bar Centres

Drop rod fixingby others

LAY-IN / EXPOSED T BAR

300/600/1200 Centres

CONCEALED T BAR

Waterloo

Page 50: Diffusers Total

Waterloo 2.0 50 Tel: +44 (0) 1622 711511

Perforated Face DiffusersKRCP KRCPE

IntroductionThe Waterloo KRCP range of diffusers have beendesigned to suit 600mm square ceiling modules of‘Burgess type’, lay-in T and concealed T arrangements.The diffuser incorporates an easily removable perforatedface plate and adjustable inner multicone pattern controlcores which produce an efficient 4, 3, 2 or 1 way airdiffusion pattern. Matching exhaust units are available.The control cores are available as separate items tofacilitate simple on site changes.This diffuser may be applied to most commercialprojects, but as the frame detail incorporates an anti-smudge ring it is ideal for kitchen and restaurantapplications. The range is suitable for systems involvingair change rates up to 20 per hour and coolingdifferentials up to 14°C.

Product DescriptionKRCP Perforated face supply diffuserKRCPE Perforated face exhaust diffuserOBSS Opposed blade damper for square connectionsLD Louvre damper for circular connections

Features• Easy maintenance• Anti-smudge frame• Pivoted front plate• Adjustable pattern control cores• Versatile ceiling integration

FinishesPPM9006 (RAL 9006 Matt Silver)PPM9010 (RAL 9010 20% Gloss White)PPG9010 (RAL 9010 Gloss White)Other colours available on request

SizesAll diffusers are 596 x 596mm overall. Available spigotsizes are as follows:-KRCP Ø300KRCPE 450 x 450, 300 x 300 or Ø300

WeightsKRCP 5.7 kgKRCPE 3.7 kgOBSS 4.0 kg

Order Example

KRCP/600x600/300 DIA/PPG9010/LDTypeNominal WidthNominal HeightSpigot SizeFinishDamper

75

596 SQUARE O/A

KRCPE LD OPTION22

97

KRCPE 450 SQ OBSS OPTION

KRCPE 300 SQ OBSS OPTION

450 SQUARE FACE OPENING

KRCP

Ø297 O/S

450 I/S NECK

6.5

Waterloo

Page 51: Diffusers Total

Waterloo 2.0 51 Tel: +44 (0) 1622 711511

Perforated Face DiffusersKRCP KRCPE

Performance Tables

Selection ExampleKRCP/600x600/3004 way throwAir Flow Rate 210 l/sThrow 0.7 - 2.0mStatic Pressure Loss 7 PaNoise level NR 28

Selection CriteriaCeiling Height 3.0 mRadius of diffusion is based on terminalvelocities of 0.75 m/s (minimum) and0.10 m/s (maximum) respectively.NR level is based on diffuser sound powerlevel less 8dB room absorption.Data is based on testing in accordance withBS 4773 Part 1 and 2 for isothermal airconditions. Data is directly applicable tocooling and heating applications.

1 way 2 waycorner

2 wayopposite

3 way 4 way Exhaust

Core Patterns

Installation Options

600 T Bar centres

CONCEALED T BAR

600 T Bar centres

BURGESS TYPE MOUNT

600 T Bar centres

LAY-IN / EXPOSED T BAR

Waterloo

KRCPSupply

4 waythrow

3 waythrow

long side

3 waythrow

short side

2 waythrow

1 waythrow

m3/h l/s

504 140T 0.3-1.1 0.3-1.3 0.3-0.8 0.3-1.8 0.4-2.5Pa 4 4 4 4 4Lw 17 17 17 17 17

756 210T 0.7-2.0 1.0-3.0 0.5-1.6 0.6-2.5 1.8-3.5Pa 7 7 7 7 7Lw 28 28 28 28 28

1008 280T 1.2-2.5 1.6-3.5 0.7-2.0 1.2-3.5 3.2-5.5Pa 17 17 17 17 17Lw 37 37 37 37 37

1260 350T 1.7-3.5 2.1-4.0 1.2-2.5 1.7-4.5 4.5-8.0Pa 26 26 26 26 26Lw 44 44 44 44 44

KRCPEExhaust

Spigot450x450

SpigotØ300m3/h l/s

504 140Pa 1 6Lw - -

1008 280Pa 4 22Lw - -

1512 420Pa 9 50Lw 18 23

2016 560Pa 15 88Lw 30 33

2520 700Pa 23 125Lw 40 41

Page 52: Diffusers Total

Waterloo 2.0 52 Tel: +44 (0) 1622 711511

Perforated Face DiffusersMWVP MWVPD

Waterloo

Order ExampleMWVPD-3-200/PPM9010

TypeNumber of DirectionsInlet Spigot DiameterFinish

*The perimeter of the oval is equivalent to the circumference of a circle of the stated diameter

*The perimeter of the oval is equivalent to the circumference of a circle of the stated diameter

W x H ØD EMWVP

EMWVPD Filter Size S

340x340 200 100 296 335x335 110

440x440 250 oval* 100 296 435x435 117

MWVPD MWVP

W x H øD1 E S øD E

240x240 125 235 72 125 87

300x300 160 270 90 160 92

380x380 200 300 110 200 92

480x480 250 oval* 295 102 250 97

560x560 315 oval* 295 99 315 107

MWVPD

MWVP-R

MWVPD-RF

MWVP-RF

IntroductionThe MWVP(D) is a high induction multidirectional (throughblanking plate arrangement) ceiling diffuser with aperforated frontplate. The diffuser is suitable for both supplyand extract applications, with chilled, warm or isothermalair. It is delivered with an acoustically lined plenum attachedas standard. The plenum also has a sound attenuation bladespecially designed to have a minimal effect on pressure,helping to reduce noise levels even further.

Extract diffusers can have an optional EU2 filter fitted, whichconform to the Eurovent norm.

Product DescriptionMWVPD-4 Side-Entry, 4-Way Perforated Plate Supply

Diffuser MWVPD-3 Side-Entry, 3-Way Perforated Plate Supply

Diffuser MWVPD-2 Side-Entry, 2-Way Perforated Plate Supply

Diffuser MWVP-4 Top-Entry, 4-Way Perforated Plate Supply

Diffuser MWVP-3 Top-Entry, 3-Way Perforated Plate Supply

Diffuser MWVP-2 Top-Entry, 2-Way Perforated Plate Supply

DiffuserMWVPD-R Side-Entry Perforated Plate Extract DiffuserMWVPD-RF Side-Entry Perforated Plate Extract Diffuser

With FilterMWVP-R Top-Entry Perforated Plate Extract DiffuserMWVP-RF Top-Entry Perforated Plate Extract Diffuser

With Filter

Features• Supply and extract functionality

• Suitable for chilled, isothermal or warmed air.

• Ideal for modular ceiling tile replacement

• High entrainment and mixing of surrounding air.

• Short throw

FinishingFront plate is PPM 9010 (20% gloss white)as standardOther colours are available on request

SizesSee Table

Page 53: Diffusers Total

Waterloo 2.0 53 Tel: +44 (0) 1622 711511

Perforated Face DiffusersMWVP MWVPD

Waterloo

Performance Table

Selection ExampleMWVP(D)-4-250 Air Volume 111 l/s or 400 m3/hThrow 1.1 mPressure Drop9 PaSound Level < NR 20

Selection CriteriaCeiling Height 2.7 mTemperature Differential (Room/Supply air) -10KAir Velocity In The Comfort Zone 0.15 m/sLp dB(A) = Lw less 8 dB Room Damping

MWVP(D) 4-Way Supply 3-Way Supply 2-Way Supply ExtractExtractWithFilter

m3/h l/s 125 160 200 250 315 125 160 200 250 315 125 160 200 250 315 125 160 200 250 315 200 250

100 28

T 0.5 0.4 0.5 0.4 0.6

Ps 8 3 11 5 17 5 3

Lp - - - - 16 - -

150 42

T 0.8 0.6 0.8 0.7 1.3 0.9

Ps 16 7 24 10 40 16 14 6

Lp 22 - 24 - 29 - - -

200 56

T 1.0 0.8 0.7 1.1 0.9 0.8 2.0 1.1 0.8

Ps 33 12 5 24 18 8 68 30 12 25 11 9

Lp 30 16 - 33 20 - 40 24 - 17 - -

250 69

T 1.3 1.0 0.8 0.5 1.1 0.8 0.5 1.6 1.0 0.7

Ps 48 18 8 3 28 12 5 44 17 8 39 16 13 3

Lp 39 24 - - 27 - - 31 18 - 23 - - -

300 83

T 1.2 1.0 0.8 1.3 1.1 0.9 2.1 1.3 1.1

Ps 28 12 5 40 18 7 64 27 11 56 21 9 18 5

Lp 33 15 - 34 18 - 39 23 - 27 - - - -

400 111

T 1.3 1.1 0.9 1.4 1.3 1.0 2.1 1.3 1.0

Ps 20 9 4 30 12 5 48 20 8 31 15 29 9

Lp 26 - - 28 18 - 31 23 - 22 - - -

500 139

T 1.6 1.4 1.2 1.7 1.7 1.3 2.6 2.1

Ps 32 13 6 48 20 7 30 11 44 24 10 41 44

Lp 32 20 - 37 26 15 29 19 28 18 - 22 -

600 167

T 1.7 1.4 2.1 1.6 3.5 2.6

Ps 18 9 28 17 44 18 35 14 5 55 20

Lp 27 16 31 19 35 24 21 - - 27 23

750 208

T 1.7 2.0 3.3

Ps 13 18 28 54 22 11 31

Lp 24 28 31 28 - - 28

1000 278

T 2.3 2.7

Ps 24 28 36 14 56

Lp 35 36 24 - 35

Page 54: Diffusers Total

Waterloo 2.0 54 Tel: +44 (0) 1622 711511

Perforated Face DiffusersWPD MWPD

Order Example: WPD-4-200-WKDV

TypeDiffuser PatternSpigot DiameterPlenum Type

IntroductionThe Waterloo high-induction ceiling diffuser type WPDhas a perforated faceplate and easily adjustable airpattern settings. The diffuser is made from aluminiumextrusions with the plenum manufactured fromgalvanised steel. The complete unit has beenspecifically designed to ensure a constant air pattern,resulting in optimal mixing with room air at a very lownoise level. An optional mounting plate is available tosuit 600 x 600 ceiling systems (the overall size of themounting plate is 595 x 595).

Product DescriptionWPD-4 Square ceiling diffuser with 4 way air patternWPD-3 Square ceiling diffuser with 3 way air patternWPD-2 Square ceiling diffuser with 2 way air patternWPD-R Square ceiling diffuser for return airMWPD Square diffuser mounted in perforated

modular plateWKDV Supply air plenumWKDVI Insulated supply air plenumWKRV Return air plenumMPV Modular plateWWM Fixing set

Features• Supply and exhaust applications of warm, cool and

isothermal air

• High induction characteristics

• Variety of air patterns

• Suitable for modular ceiling systems

• Excellent free-jet performance

• Adjustable 3 position faceplate

FinishesPPM9010 (RAL 9010 20% Gloss White)Other colours available on request

Advantages• Excellent aerodynamic performance• Good mixing with room air• Can be used for full tile replacement• Short throw

WPD + MPV-600

WxH

øD1595 x 595

60

K40

MWPD

WxH

øD1595 x 595

60

K4

0

W x H øD1 øD2 E K X

210x210 125 125 243 33 0/ 7.5/15210x210 160 160 243 33 0/ 7.5/ 15310x310 200 200 290 40 0/ 7.5/ 15410x410 250 250 355 55 0/ 7.5/ 15510x510 315 315 435 70 0/ 7.5/ 15

Waterloo

Page 55: Diffusers Total

Waterloo 2.0 55 Tel: +44 (0) 1622 711511

Perforated Face DiffusersWPD MWPD

Performance Tables

Accessories

Selection ExampleWPD-4-1254 way supply

Air Volume 56 I/sThrow 1.0 mPressure Drop 33 PaNoise Level NR 31

Selection CriteriaCeiling Height 2.7 mTemperature Differential -10KRoom Velocity Vr 0.15 m/sLw based on diffuser sound power levelminus 8 dB room absoption.

All selections include the plenum

M6 WasherM6 Nut

Support Frame

Spring Clip SetDiffuser Frame

WWM-Set

WPD + WWM-Set The WWM fixing set consists of 2support frames, 4 spring clip sets and4 M6 nuts and washers.

FaceplateHeight

Corrections

X (mm) ‘T’ Throw (m) Pressure (Pa) Noise level (NR)

0 x 1.0 x 1.0 07.5 x 0.9 x 0.9 - 215 x 0.8 x 0.6 - 3

WPD Supply4 way

Supply3 way

Supply2 way

Exhaust

m3/h l/s 125 160 200 250 315 125 160 200 250 315 125 160 200 250 315 125 160 200 250 315

100 28

T 0.5 0.4 0.5 0.4 0.6

Ps 8 3 11 5 17 5

Lp - - - - 17 -

150 42

T 0.8 0.6 0.8 0.7 1.3 0.9

Ps 16 7 24 10 40 16 14

Lp 23 - 25 - 30 - -

200 56

T 1.0 0.8 0.7 1.1 0.9 0.8 2.0 1.1 0.8

Ps 33 12 5 24 18 8 68 30 12 25 11

Lp 31 17 - 34 21 - 41 25 - 18 -

250 69

T 1.3 1.0 0.8 0.5 1.1 0.8 0.5 1.6 1.0 0.7

Ps 48 18 8 3 28 12 5 44 17 8 39 16

Lp 40 25 - - 28 - - 32 19 - 24 -

300 83

T 1.2 1.0 0.8 1.3 1.1 0.9 2.1 1.3 1.1

Ps 28 12 5 40 18 7 64 27 11 56 21 9

Lp 34 16 - 35 19 - 40 24 - 28 - -

400 111

T 1.3 1.1 0.9 1.4 1.3 1.0 2.1 1.3 1.0

Ps 20 9 4 30 12 5 48 20 8 31 15

Lp 27 - - 29 19 - 32 24 - 23 -

500 139

T 1.6 1.4 1.2 1.7 1.7 1.3 2.6 2.1

Ps 32 13 6 48 20 7 30 11 44 24 10

Lp 33 21 - 38 27 16 30 20 29 19 -

600 167

T 1.7 1.4 2.1 1.6 3.5 2.6

Ps 18 9 28 17 44 18 35 14 5

Lp 28 17 32 20 36 25 22 - -

750 208

T 1.7 2.0 3.3

Ps 13 18 28 54 22 11

Lp 25 29 32 29 - -

1000 278

T 2.3 2.7

Ps 24 28 36 14

Lp 36 37 25 -

Waterloo

Page 56: Diffusers Total

Waterloo 2.0 56 Tel: +44 (0) 1622 711511

IntroductionThe Waterloo high-induction ceiling diffuser type WIDhas a perforated faceplate and easily adjustable airpattern settings. The diffuser is made from aluminiumextrusions with the plenum manufactured fromgalvanised steel. The complete unit has beenspecifically designed to ensure a constant air pattern,resulting in optimal mixing with room air at a very lownoise level.An optional mounting plate is available to suit600x600 ceiling systems (the overall size of themounting plate is 595x595).

Product DescriptionWID-4 Square ceiling diffuser with 4 way air patternWID-3 Square ceiling diffuser with 3 way air patternWID-2 Square ceiling diffuser with 2 way air patternWID-R Square ceiling diffuser for return airWKDV Supply air plenumWKDVI Insulated supply air plenumWKRV Return air plenumMPV Modular plateWWM Fixing set

Features• Supply and exhaust applications of warm, cool and

isothermal air

• High induction characteristics

• Variety of air patterns

• Suitable for modular ceiling systems

• Excellent free-jet performance

FinishesPPM9010 (RAL 9010 20% Gloss White)Other colours available on request

Advantages• Excellent aerodynamic performance• Good mixing with room air• Can be used for full tile replacement• Short throws

WID + MPV

WxHØD1

595 x 595

X60

K40

Order Example:

WID-3-200-WKDVI TypeDiffuser PatternSpigot DiameterPlenum Type

W x H øD1 øD2 E K X210x210 125 125 196 33 20 27.5 35210x210 160 160 231 33 20 27.5 35310x310 200 200 270 40 20 27.5 35410x410 250 250*oval 288 55 20 27.5 35510x510 315 315*oval 288 70 20 27.5 35

* The perimeter of the oval is equivalent to the circumference of a circle of the stated diameter

Perforated Face DiffusersWID

Waterloo

Page 57: Diffusers Total

Waterloo 2.0 57 Tel: +44 (0) 1622 711511

Perforated Face DiffusersWID

Performance Tables

Selection CriteriaCeiling Height 2.7 mTemperature Differential -10KRoom Velocity Vr 0.15 m/sLw based on diffuser sound power levelminus 8 dB room absoption.

All selections include the plenum

Selection ExampleWID-4-1254 way supplyAir Volume 125 m3/h (35 I/s)Throw 0.4 mPressure Drop 22 PaNoise level Lw 25

FaceplateHeight

Corrections

X (mm) ‘T’ Throw (m) Ps (Pa) Noise level (Lw)

20 x 1.0 x 1.0 +027.5 x 0.9 x 0.6 - 235 x 0.8 x 0.5 - 2

Waterloo

WID Supply4 way

Supply3 way

Supply2 way

Exhaust

m3/h l/s 125 160 200 250 315 125 160 200 250 315 125 160 200 250 315 125 160 200 250 315

50 14T 0.4 0.6Ps 7 9Lp - -

75 21T 0.2 0.5 0.7Ps 10 12 15Lp - - 22

100 28T 0.3 0.6 0.8Ps 14 19 22 6Lp 21 24 27 -

125 35T 0.4 0.3 0.7 0.5 0.9 1.2Ps 22 10 26 12 32 16 8Lp 25 - 28 - 33 - -

150 42T 0.5 0.4 0.9 0.7 1.0 0.8Ps 29 15 35 18 43 22 13 5 2Lp 28 20 32 21 36 25 - - -

200 56T 0.7 0.6 0.5 1.2 0.9 0.7 1.4 1.2 1.1Ps 45 25 12 57 28 16 69 35 18 23 9 4Lp 34 24 - 41 25 - 44 27 18 18 - -

250 69T 0.7 0.6 1.2 0.9 1.6 1.5Ps 33 19 40 21 50 25 36 13 5 2Lp 29 - 30 19 33 22 24 - - -

300 83T 0.9 0.8 0.7 1.4 1.2 1.1 2.0 1.7 1.5Ps 48 23 9 52 27 12 66 35 15 52 19 8 3Lp 32 21 - 34 23 - 38 26 21 29 - - -

400 111T 1.2 1.0 1.6 1.5 2.4 2.1Ps 37 17 46 26 57 26 91 34 14 6 2Lp 26 20 28 23 33 26 35 23 - - -

500 139T 1.5 1.3 1.1 2.0 1.8 1.6 3.1 2.6 2.3Ps 50 24 11 60 27 12 85 38 15 52 21 9 4Lp 30 24 21 32 26 22 40 30 24 29 15 - -

600 167T 1.5 1.3 2.2 2.0 3.2 2.7Ps 33 16 40 18 53 19 75 31 13 5Lp 28 24 30 26 33 28 34 22 - -

750 208T 1.9 1.6 2.8 2.4 3.3Ps 50 22 60 25 28 48 21 9Lp 34 28 38 30 33 28 - -

1000 278T 2.3 3.1 4.4Ps 36 40 46 84 38 15Lp 34 36 38 36 23 -

1250 347T 2.9 3.8Ps 52 57 60 24Lp 38 40 29 19

Page 58: Diffusers Total

Waterloo 2.0 58 Tel: +44 (0) 1622 711511

Luminaire DiffusersLUMDF

Waterloo

6.5mm cable grommet for mainspower and emergency powerpack connection 575 x 575

5

255

Quick fix plenum clips

120

50

390 Ø

157

596 o/a

486 i/s recess

600 grid centres

596

x 59

6

Supply with 2m ofcable pre-wired tofitting

Pitot measurement point(remove light diffuser for access)

Order Example

LUMDF-S/PPM9010/0001/EP/FDCTypeSupplyFinishProject ReferenceOptional Emergency PackOptional Damper

IntroductionThe Waterloo Luminaire unit is a technically advancedform of light and air terminal which provides multi-directional supply air capability.

Available in both supply and extract versions, the units aredesigned as a ‘tile replacement’ fitting which simply dropsinto any standard 600mm square ‘T’ grid. Furthermore,the use of a special lightweight plenum construction limitsthe overall weight of the supply unit to 9.6kg for the basicunit and 10.3kg with the emergency pack, therebyeliminating the requirement for additional overheadsupport.

Plenums are provided with a ‘quick fix’ clip enabling theinlet spigot to be conveniently configured to suit the supplyduct arrangement.

Both supply and extract units are available with optionalemergency power supplies and all come pre-wired with2m of flying lead.

Supply units can be specified with optional cord operateddampers, which together with the calibration port on thelight case (accessible after removal of the light diffuser),make site commissioning a quick and simple procedure.

Features• Multi-directional air throw capability, quickly and easily

adjustable from face of unit• Lightweight construction• Clip fixed plenum for on-site versatility• Integrated commissioning port• All units supplied complete with pre-wired flying lead• Innovative heat extraction system from light fitting• LGC 3 Cat fitting c/w airhandling linear slot diffuser

Benefits• Can be installed in central areas or adjacent to walls

without degredation of performance or appearance• Units can be quickly and easily relocated and

re-commissioned if site layouts alter• Supply and extract versions can be fitted into ceiling grid

without overhead support• Simple air flow measurement on site via built in port• Aids reduction of heat load from lighting in occupied

zone

Lamp Types• 36W, TC-L compact fluorescent, cap: 2G11

FinishesPlenum Box: Class “O” rated fire retardant board.

Diffuser : Galvanised Steel

StandardsDesigned and manufactured to comply withEN 605982.1. Emergency versions with louvre or TP(a) diffuser attachments compy with EN 60598 .2.22. Class 1 Electrical, CIBSE LG3 VDT, CE Mark

Page 59: Diffusers Total

Waterloo 2.0 59 Tel: +44 (0) 1622 711511

Luminaire DiffusersLUMDF

Waterloo

Performance Data

PerformanceJet throws are based on the horizontal distance from the centre of theunit to the point where the jet velocity has decayed to 0.5 m/s.

Data is valid for isothermal conditions or cooling differentials of up to10°C.

Noise levels are based on peak sound power level plotted onto NR andassume a typical room absorption allowance of 8dB (LRlp ref 8dB abs.)

Octave band sound power level data is available on request.

60˚

90˚

60˚

90˚

Photometric Data

30˚30˚

Emergency factor

1Room index

LP

2

0.09 0.10 0.10 0.10 0.10

3 4 5

Air flow rate (l/s)

Throw (m)Pressure (Pa)

4 WayPattern

1.256

1.5 2.0 2.25 2.5 3.08 11 15 19 24

Noise Level NRLP - - - 21 25 28

40 50 60 70 80 90

Air flow rate (l/s)

Throw (m)Pressure (Pa)

3 WayPattern

1.58

2.0 2.75 3.512 17 22

Noise Level NRLP - - 20 25

40 50 60 70 80 90

Air flow rate (l/s)

Throw (m)Pressure (Pa)

2 WayPattern

2.513

3.0 4.020 28

Noise Level NRLP - 22 28

40 50 60 70 80 90

Air flow rate (l/s)

Pressure (Pa)

Exhaust

4 6 8

40 50 60 70 80 90

10 13 16

URF

C W F 1 2

0.6 0.6 0.2 0.58 0.65 0.67 0.68 0.690.5 0.56 0.63 0.66 0.66 0.690.3 0.53 0.61 0.65 0.64 0.67

0.7 0.6 0.2 0.57 0.64 0.66 0.68 0.680.5 0.55 0.63 0.65 0.67 0.670.3 0.53 0.61 0.64 0.65 0.66

0.8 0.6 0.2 0.58 0.62 0.64 0.65 0.650.5 0.54 0.61 0.63 0.64 0.650.3 0.53 0.59 0.62 0.63 0.64

3 4 5

For additional lighting information refer to leaflets LAL011/1issue 3 and LAL011/2 issue 3, copies of which areavailable upon request.

Page 60: Diffusers Total

Waterloo 2.0 60 Tel: +44 (0) 1622 711511

Fixed Blade Swirl DiffusersSDFC SDFS

*125 WITH QUADRANT OPERATED FLAPDAMPERS.

Duct mounting collar

Ceilingsupportbrackets

50

ØD1 o/s

65H

65H

ØG

Ø A

ØD1 o/s

12

To suit nominalgrid type & size

To s

uit n

omin

algr

id ty

pe &

siz

e

SDFC SDFS

SDFC SDFS

Edge detail to suit grid typeas shown below

FE *75

20

C50

ØD2

IntroductionWaterloo Air Products range of fixed blade swirl diffuserspresents an attractive and aerodynamically efficientalternative to conventional circular or square ceiling airterminals.The diffusers are designed to produce a horizontal,radial air pattern with a turbulent, high induction jetcharacteristic and are ideally suited for applications withhigh heating or cooling differentials.Manufactured from aluminium with press formed blades,the units are available in a range of six ISO sizes ineither circular (type SDFC) or square format (types SDFS)and can be supplied complete with a duct mountingcollar for easy assembly.The steel duct mounting collar can be used as a means offixing and supporting the diffuser from rigid ductwork, oralternatively, ceiling support brackets (supplied asstandard) can be fitted for use with flexible ducting.

Product DescriptionSDFC Circular face swirl diffuserSDFS Square face swirl diffuserDM*** Duct collar WTP*** Side entry plenum box

(*** is replaced with nominal size)- see order example

FDC1 Cord operated flap damperFDQ1 Quadrant operated flap damperLINED 6mm Class O fire rated acoustic lining

Please note the duct collar is not requiredwhen ordering diffusers with plenums.

SizesSee table

FinishesPPM9006 (RAL 9006 Matt Silver)PPM9010 (RAL 9010 20% Gloss White)PPG9010 (RAL 9010 Gloss White)Other colours available on request

Frame size

483,583, 733

500, 600,

750 Nom Grids

Tegular frame - T8 Tegular frame - T16Exposed 'T' - E

Frame size 295, 495,

595, 745

300, 500, 600,

750 Nom Grids

12

8

Frame size

483,583, 733

500, 600,

750 Nom Grids

16

Please note a 300x300 grid is only available for an exposed lay-in type,and with neck sizes up to 250Ø.

SDFC Size Diffuser + Collar Plenum125 Ø 0.3 kg 1.6 kg160 Ø 0.4 kg 1.9 kg200 Ø 0.6 kg 4.5 kg250 Ø 0.7 kg 5.1 kg315 Ø 1.0 kg 7.4 kg400 Ø 1.5 kg 9.5 kg

SDFS Grid Size Diffuser + Collar Plenum 300 x 300 1.1 kg For plenum weights

use data abovebased on nominal

neck size

500 x 500 1.5 kg600 x 600 2.1 kg750 x 750 3.2 kg

Nom.Size

ØA Available Grid Sizesfor SDFS C ØD1 ØD2 E F ØG H

125 200 300, 500, 600 or 750 215 123 97 320 300 160 25

160 250 300, 500, 600 or 750 240 158 122 320 300 200 25

200 300 300, 500, 600 or 750 275 198 157 420 400 250 25

250 350 300, 500, 600 or 750 315 248 197 420 400 300 25

315 450 500, 600 or 750 370 313 247 520 500 370 30

400 535 500, 600 or 750 435 397 312 580 560 460 30

Order Example

SDFS-250/T16/500/PPM9010 /DM/WTP/FDC1/LINED

TypeNominal SizeFrame Style & Grid(if square diffuser)Colour FinishDuct Collar (DM) or Plenum (WTP)Plenum Spigot Damper (if required)Acoustic Plenum Lining (if required)

Waterloo

SDFS Frame Styles and Grid Sizes

Page 61: Diffusers Total

Waterloo 2.0 61 Tel: +44 (0) 1622 711511

Fixed Blade Swirl DiffusersSDFC SDFS

Performance Table

Selection CriteriaJet throw data is expressed in metres and isbased on a terminal velocity of 0.5m/s and a10°C cooling differential. For isothermal or10°C heating conditions apply a factor of1.15 to the throws.

NR levels are based on sound pressure levelswith an assumed 8dB room absorption factorallowed.

Pressure loss data is shown in terms of staticpressure loss (Pa) based on a diffuser fittedwith a DM collar, or for a diffuser installed ina WTP plenum.

For exhaust applications add 3dB to the NR level and multiply pressure loss by 1.1

SDFCSDFS

Supply Air Volumem3/h 36 72 108 144 180 216 252 288 324 360 432 504 576 648 720 810 900 990 1080

Diameter l/s 10 20 30 40 50 60 70 80 90 100 120 140 160 180 200 225 250 275 300

125

Jet Throw 0.3 0.5Lw Duct 20 34

Lw Plenum 22 36Ps Duct 16 47

Ps Plenum 20 59

160

Jet Throw 0.4 0.6 1.0 1.3Lw Duct - 24 33 39

Lw Plenum - 26 35 41Ps Duct 10 21 25 55

Ps Plenum 12 26 31 69

200

Jet Throw 0.4 0.6 0.9 1.3 1.5 1.8Lw Duct - - 20 27 32 36

Lw Plenum - - 22 29 34 38Ps Duct 4 9 15 22 30 40

Ps Plenum 5 11 19 28 38 50

250

Jet Throw 0.6 1.0 1.3 1.4 1.6 1.8 2.1 2.3Lw Duct - - - 21 24 28 31 37

Lw Plenum - - 20 23 26 30 33 39Ps Duct 5 8 11 15 19 24 29 40

Ps Plenum 6 10 14 19 24 30 36 50

315

Jet Throw 0.8 1.0 1.2 1.3 1.4 1.6 1.9 2.2 2.4Lw Duct - - - - 22 25 30 35 38

Lw Plenum - - - 20 24 27 32 37 40Ps Duct 5 7 9 11 14 17 25 33 41

Ps Plenum 6 9 11 14 17 21 31 41 51

400

Jet Throw 1.0 1.2 1.3 1.7 2.2 2.4 2.6 3.0 3.4 3.6Lw Duct - - - - - 22 25 28 30 33

Lw Plenum - - - - 20 24 27 30 32 35Ps Duct 3 5 6 8 11 13 17 20 24 29

Ps Plenum 4 6 8 10 14 16 21 25 30 36

Waterloo

Selection ExampleSDFC/315Air flow rate 120 l/s

Ducted DiffuserJet throw 1.9mStatic Pressure Loss 25 PaNoise level NR 30

Plenum Mounted DiffuserJet throw 1.9mStatic Pressure Loss 31 PaNoise level NR 32

Page 62: Diffusers Total

Waterloo 2.0 62 Tel: +44 (0) 1622 711511

Perforated Face Swirl DiffusersSDFS-P

H

AØD1

B

ØD

1

75

ØD

70

SDFS-PPerforated supply diffuser

SDFS-P Perforated supply diffuser with WTP plenum

SDFS-P-EPerforated extract diffuser

(for ceiling void return only)

Frame size

Fram

e si

ze

ØD

110

Duct mountingcollar

RemovableFaceplate

Hangingbrackets

Frame size

Fram

e si

ze

RemovableFaceplate

Hangingbrackets

38

IntroductionWaterloo Air Products range of perforated face, fixedblade swirl diffusers presents an attractive andaerodynamically efficient alternative to conventionalcircular or square ceiling air terminals.The diffusers are designed to produce a horizontal,radial air pattern with a turbulent, high entrainment jetcharacteristic and are ideally suited for applications withhigh heating or cooling differentials.Manufactured from aluminium with press formed blades,the units have an aesthetically pleasing perforated facewhich has Ø4.5mm holes on an 8mm 45° pitch, givinga free area of 49.7%. They are available in a range of4 standard ISO sizes in 3 different frame configurationsto suit 4 nominal ceiling grid sizes. The steel duct mounting collar can be used as a meansof fixing and supporting the diffuser from rigid ductwork,or alternatively, ceiling support brackets (supplied asstandard) can be fitted for use with flexible ducting.

Product DescriptionSDFS-P Perforated face swirl diffuser SDFS-P-E Perforated face extract diffuser DM*** Duct collar WTP*** Side entry plenum box

(*** is replaced with nominal size)- see order example

FDC1 Cord operated flap damperFDQ1 Quadrant operated flap damperLINED 6mm Class O fire rated acoustic lining

Please note the duct collar is not required when orderingdiffusers with plenums.

SizesSDFS-P diffusers are available in ISO duct sizes rangingfrom 160mm to 400mm diameter, with 3 frame optionsto suit ceiling grid sizes of 300, 500, 600 & 750square.

FinishesPPM9006 (RAL 9006 Matt Silver)PPM9010 (RAL 9010 20% Gloss White)PPG9010 (RAL 9010 Gloss White)Other colours are available on request

Nom.Size

Grid Size ØD ØD1 A B H

160 300 x 300 158 122 300 320 255

250 500 x 500 248 197 400 420 330

315 500 x 500 313 247 500 520 380

315 600 x 600 313 247 500 520 380

400 600 x 600 397 312 560 580 445

400 750 x 750 397 312 560 580 445

Order Example

SDFS-P-250/500/T16/PPM9010 /DM

/WTP/FDC1/LINED

TypeNominal sizeFrame style & gridColour finishDuct collar (DM) or Plenum (WTP)Plenum spigot damper (if required)Acoustic plenum lining (if required)

Modular Frame Styles and Grid Sizes

Exposed 'T' - E

300, 500, 600, 750Nom. Grid

295, 495, 595,745 o/a

27.5

5

Tegular frame - T8 Tegular frame - T16

500, 600, 750Nom. Grid

483, 583, 733

21.5

500, 600, 750Nom. Grid

483, 583, 733

21.5

8 16

FrameSize

FrameSize

FrameSizeNom Neck & Grid Size Diffuser + Collar Plenum

160/300x300 1.6 kg 1.9 kg250/500x500 2.5 kg 5.1 kg315/500x500 2.5 kg 7.4 kg315/600x600 3.6 kg 7.4 kg400/600x600 3.6 kg 9.5 kg400/750x750 5.4 kg 9.5 kg

Waterloo

Page 63: Diffusers Total

Waterloo 2.0 63 Tel: +44 (0) 1622 711511

Perforated Face Swirl DiffusersSDFS-P

Selection ExampleSDFS-P-315/E/600Air Flow Rate 125 l/s

Ducted DiffuserJet Throw 1.2mStatic Pressure Loss 11 PaNoise level NR 23

Plenum Mounted DiffuserJet Throw 1.2mStatic Pressure Loss 18 PaNoise Level NR 26

Performance Table

Selection CriteriaJet throw data is expressed in metres and isbased on a terminal velocity of 0.5m/s anda 10°C cooling differential. For isothermal or10°C heating conditions apply a factor of1.15 to the throws.

NR levels are based on sound pressure levelswith an assumed 8dB room absorption factorallowed.

Pressure loss data is shown in terms of staticpressure loss (Pa) based on a diffuser fittedwith a DM collar, or for a diffuser installed ina WTP plenum.

SDFS-PSupply Air Volume

Grid Sizem3/h 108 144 180 216 288 360 450 540 630 720 810 900 990

Diameter l/s 30 40 50 60 80 100 125 150 175 200 225 250 275

160 300 x 300

Jet Throw 0.6 1.0 1.3Lw Duct 22 31 37

Lw Plenum 22 31 37Ps Duct 14 27 44

Ps Plenum 18 33 54

250 500 x 500

Jet Throw 0.4 0.5 0.7 1.0 1.7Lw Duct - - - 28 35

Lw Plenum - - - 28 35Ps Duct 4 7 10 19 30

Ps Plenum 5 8 12 23 36

315 500 x 500

Jet Throw 0.4 0.7 0.9 1.2 1.8 2.5Lw Duct - - - 25 31 36

Lw Plenum - - - 27 33 38Ps Duct 3 6 9 14 19 26

Ps Plenum 5 8 12 19 27 35

315 600 x 600

Jet Throw 0.7 0.9 1.2 1.8 2.5Lw Duct - - 23 29 33

Lw Plenum - - 26 31 36Ps Duct 4 7 11 17 22

Ps Plenum 8 12 18 26 35

400 600 x 600

Jet Throw 0.5 0.8 1.2 1.5 1.8 2.1 2.3 2.7Lw Duct - - - - 24 29 33 37

Lw Plenum - - - 23 27 32 35 39Ps Duct 4 6 8 11 14 18 23 26

Ps Plenum 5 8 10 14 18 23 30 35

400 750 x 750

Jet Throw 0.8 1.2 1.5 1.8 2.1 2.3 2.7Lw Duct - - 22 26 30 33 36

Lw Plenum - - 24 28 32 35 37Ps Duct 6 8 11 15 18 23 28

Ps Plenum 7 10 14 19 25 32 38

Exhaust Air Volume

Grid Sizem3/h 108 144 180 216 288 360 450 540 630 720 810 900 990l/s 30 40 50 60 80 100 125 150 175 200 225 250 275

300 x 300 Pressure loss Pa

(All selections <Lw20)

2 3 5 8 15500 x 500 1 2 3 5 7 10600 x 600 1 2 2 3 4 6 7 9 11750 x 750 1 2 2 3 4 6 7 9 11

Waterloo

Page 64: Diffusers Total

Waterloo 2.0 64 Tel: +44 (0) 1622 711511

High Capacity Swirl DiffusersSDFCH SDICH SDACH

ØB ceiling cutout

ØA overall

ØC neckD

E

IntroductionThe Waterloo SDFCH are high capacity fixedblade swirl diffusers designed to produce ahorizontal, radial air pattern with a turbulent, highentrainment jet characteristic and are ideally suitedfor applications with high heating or coolingdifferentials.

The Waterloo SDICH is based on the SDFCH butallows the individual adjustment of blades tocreate a specifically required air pattern.

The Waterloo SDACH is also based on the SDFCHbut provides adjustment to the angle of all of theblades in unison in order to create the required airpattern. This can also be controlled remotely withan optional motor.

Both the SDICH and the SDACH allow a continualadjustment from providing coanda effect to verticaldumping. They are particularly useful in areas thatexperience a varied thermal load, for exampleareas that are effected heavily by the changes inseason.

All products in the high capacity swirl diffuserrange are suitable for ceilings up to 15m.

Product DescriptionSDFCH Large format, high capacity fixed swirl

diffuserSDICH Large format, high capacity swirl diffuser

with individually adjustable bladesSDACH Large format, high capacity swirl diffuser

with connected adjustable bladesSDP Side entry plenum boxFDC1 Cord operated flap damperFDQ1 Quadrant operated flap damperLINED 6mm Class O fire rated acoustic liningM Optional actuator- for the SDACH only

Features• Large size range• Profiled frame• Optional standard side entry plenum

FinishesPPM9006 (RAL 9006 Matt Silver)PPM9010 (RAL 9010 20% Gloss White)PPG9010 (RAL 9010 Gloss White)Other colours available on request

Advantages• High air volume capacity• Standard top entry neck, or side entry with

plenum box

NomSize ØA ØB ØC D E F G H J* ØD1 ØD2

200 280 225 197 90 5 395 375 290 413 197 200

250 330 275 247 100 5 445 425 340 473 247 250

315 430 360 312 115 5 520 500 405 553 312 315

400 530 450 397 130 5 595 575 490 653 397 400

500 650 550 497 185 8 695 675 590 808 497 500

Order Example

SDFCH/200/PPM9010/SDP/FDC1/LINEDType

Nominal size

Finish

Plenum (if required)

Plenum spigot damper

Plenum acoustic lining

F

PerforatedBaffle

H

G i/sØD1 o/s

ØD2 i/s

75

6375

(125 with FDQoption)

FDC, FDQ damperoptions

J*

*

* Please note the total installed height assumes an overlap of 30mm on thediffuser neck / plenum connection.

630 790 680 627 200 8 820 800 720 953 627 630

Waterloo

Page 65: Diffusers Total

Waterloo 2.0 65 Tel: +44 (0) 1622 711511

High Capacity Swirl DiffusersSDFCH SDICH SDACH

Selection ExampleSDFCH/500Air Flow Rate 500 l/s

Ducted DiffuserJet Throw 4.0mStatic Pressure Loss 21 PaNoise Level NR 21

Plenum Mounted DiffuserJet Throw 4.0mStatic Pressure Loss 32 PaNoise Level NR 27

Performance Table

Selection CriteriaJet throw data is for a ceiling mounted diffuser andis based on a cooling differential of 10°C and a jetterminal velocity of 0.5m/sFor isothermal conditions apply a factor of 1.1 tothe throws.For 10°C heating applications apply a factor of 1.2to the throws.For duct mounted installations without a ceilingreduce jet throws by a factor of 0.7

Ps is the static pressure loss in Pa and is shown for aducted diffuser or for a diffuser installed in an SDPplenum.

NR levels are based on sound pressure levels withan assumed 8dB room absorption allowance.

For exhaust applications add 3dB to the NR level and multiply pressure loss by 1.1

SDFCHSupply Air Volume

m3/h 72 144 216 288 360 432 540 630 720 810 900 1080 1260 1440 1620 1800 2160 2520 2880 3240 3600 3960 4320

Diameter l/s 20 40 60 80 100 120 150 175 200 225 250 300 350 400 450 500 600 700 800 900 1000 1100 1200

200

Jet Throw 0.4 0.9 1.3 1.6 1.9Lw Duct 3 10 23 40 62Lw Plenum 3 12 27 47 70Ps Duct - - - 22 30Ps Plenum - - - 22 30

250

Jet Throw 1.1 1.3 1.6 1.8 2.0 2.2Lw Duct 8 14 22 33 50 66Lw Plenum 10 17 26 40 59 80Ps Duct - - - - 24 29Ps Plenum - - - 23 30 35

315

Jet Throw 1.4 1.6 1.8 2.0 2.4 2.8 3.3Lw Duct 7 11 15 21 28 35 43Lw Plenum 9 14 20 27 35 43 56Ps Duct - - - 22 27 31 34Ps Plenum - - 20 25 30 34 37

400

Jet Throw 1.7 1.9 2.2 2.4 2.8 3.5 3.8 4.2 4.7Lw Duct 5 6 9 11 14 20 27 35 45Lw Plenum 6 8 11 14 18 25 35 47 58Ps Duct - - - - - - 26 32 37Ps Plenum - - - - - 22 29 35 40

500

Jet Throw 3.2 3.5 3.7 4.0 4.7 5.3Lw Duct 10 13 17 21 30 40Lw Plenum 13 18 22 27 40 54Ps Duct - - - 21 27 32Ps Plenum 21 25 29 32 37 42

630

Jet Throw 2.8 3.1 3.8 4.4 5.4 6.1 7.0 7.7 8.2Lw Duct 6 8 12 16 21 26 34 40 49Lw Plenum 9 11 16 22 28 36 44 52 62Ps Duct - - - - 21 25 29 32 35Ps Plenum - - 21 25 29 33 36 39 42

Waterloo

Nom Size Diffuser (kg) Plenum(kg)200 0.5 5.5250 0.7 7.0315 1.2 9.0400 1.7 13.5500 3.5 18.5630 4.5 25

Also suitable for the SDICH and SDACH when set in the optimum coanda effect position

Page 66: Diffusers Total

Waterloo 2.0 66 Tel: +44 (0) 1622 711511

Vane Swirl DiffusersSDVS SDVC

IntroductionThe Waterloo vane swirl diffusers are designed for areas whererapid mixing of supply air is required in rooms of ceiling heightbetween 2.6m and 4m.

Product DescriptionSDVSA Square plate vane swirl diffuser

with radial pattern (angled slot)SDVCA Circular plate vane swirl diffuser

with radial pattern (angled slot)SDVSB Square plate vane swirl diffuser

with radial pattern (normal slot)SDVCB Circular plate vane swirl diffuser

with radial pattern (normal slot)S Side entry plenumV Top entry plenum

Features• High air volume capacity

• Standard top entry neck, or side entry with plenum box

• Reversible polymer blades enabling different discharge directions

• Flat or ribbed blade appearance

• Attractive lightweight design

• Side or top entry plenums available

• In order to keep the same appearance the same design is

used for supply and extract diffusers. Meaning that there is

no requirement to identify this on the order.

FinishesBlack or white polymer vanes(to be specified on order)

PPM9006 (RAL 9006 Matt Silver)PPM9010 (RAL 9010 20% Gloss White)PPG9010 (RAL 9010 Gloss White)Other colours available on request

Advantages• Suitable for high ceilings

(relative to other diffusers)• Rapid induction of supply air

Order Example

SDVSA-600-24/PPM9010/SType

Frontplate size

Front face pattern

Finish

Plenum type

Waterloo

200

60

ØB

C x C

D x D / ØDØG

60

FHØA

ØA

D x D / ØD

SDVSA-V / SDVCA-V

SDVSA-S / SDVCA-S

Air discharge - all left / all right

Air dischargeleft

Air dischargeright

Page 67: Diffusers Total

SDVSB-800-64SDVSB-825-64

798/823

798/

823

598/623

SDVSB-600-40SDVSB-625-40

598/

623

498

SDVSB-500-24

498

398/498598/623

SDVSB-400-16SDVSB-500-16SDVSB-600-16SDVSB-625-16

398/

498

598/

623

298

SDVSB-300-8

298

SDVCB-800-64SDVCB-825-64

ø800/ø825

SDVCB-600-40SDVCB-625-40

ø600/ø625

SDVCB-500-24

ø500

Waterloo 2.0 67 Tel: +44 (0) 1622 711511

Vane Swirl DiffusersSDVS SDVC

Waterloo

ø400/ø500ø600/ø625

SDVCA-400-16SDVCA-500-16SDVCA-600-16SDVCA-625-16

SDVCA-500-24

ø500

598/623

SDVSA-600-48SDVSA-625-48

598/

623

SDVSA-800-72SDVSA-825-72

798/823

398/498598/623

SDVSA-400-16SDVSA-500-16SDVSA-600-16SDVSA-625-16

398/

498

598/

623

ø600/ø625

SDVCA-600-48SDVCA-625-48

ø300

SDVCA-300-8

298

298

SDVSA-300-8

SDVSA-500-24

498

498

SDVCA-800-72SDVCA-825-72

ø800/ø825

SDVCB-300-8

ø300

SDVCB-400-16SDVCB-500-16SDVCB-600-16SDVCB-625-16

ø400/ø500ø600/ø625

SDVSA SDVCA

SDVCBSDVSB

598/623

598/

623

SDVSA-600-24SDVSA-625-24

ø600/ø625

SDVCA-600-24SDVCA-625-24

FixingSizes 300 - 600 (inclusive) 1 screw centralSizes 625 - 825 (inclusive) 4 screws

Page 68: Diffusers Total

Performance Table

Waterloo 2.0 68 Tel: +44 (0) 1622 711511

Vane Swirl DiffusersSDVS SDVC

Waterloo

SDVSASDVCA

Supply Exhaust with side entry plenum Exhaust with top entry plenum

300-8

400-16500-16600-16625-16

500-24600-24625-24

600-48625-48

800-72825-72

300-8

400-16500-16600-16625-16

500-24600-24625-24

600-48625-48

800-72825-72

300-8

400-16500-16600-16625-16

500-24600-24625-24

600-48625-48

800-72825-72

m3/h l/s

54 15T 0.7Ps 3Lp -

72 20T 0.9Ps 6Lp -

90 25T 1.1Ps 9Lp 10

108 30T 1.3 1.1Ps 12 3 4Lp 15 - -

144 40T 1.6 1.3 1.1Ps 22 6 3 7Lp 22 - - -

180 50T 1.9 1.4 1.3Ps 34 9 4 16 12Lp 28 13 - 9 7

216 60T 2.1 1.6 1.4 1.3Ps 50 14 6 2 24 17Lp 33 17 12 - 15 13

252 70T 2.4 1.7 1.6 1.4Ps 68 18 8 3 32 23Lp 37 21 16 - 19 18

288 80T 2.6 1.8 1.7 1.5Ps 88 24 11 4 42 14 30 11Lp 40 25 19 7 23 9 22 9

360 100T 2.0 2.0 1.7 1.8Ps 38 17 7 5 66 21 13 47 17 12Lp 31 25 13 - 30 16 9 28 16 8

450 125T 2.3 2.3 1.9 1.9Ps 59 26 11 7 103 33 20 73 26 19 8Lp 37 31 19 13 37 23 15 35 22 14 6

540 150T 2.6 2.1 2.0 1.9Ps 38 15 10 3 48 29 13 38 27 12 10Lp 35 23 18 - 28 21 10 28 20 12 6

720 200T 2.5 2.2 2.1Ps 27 18 6 85 52 23 18 7 67 48 21 18Lp 31 26 15 37 30 19 15 8 37 29 20 15

900 250T 2.8 2.4 2.3Ps 42 28 9 82 36 29 11 75 34 28 11Lp 37 31 21 37 26 21 15 36 27 22 10

1080 300T 2.5 2.5Ps 41 13 118 51 41 16 108 48 40 16Lp 36 25 42 31 27 21 41 33 27 16

1260 350T 2.6Ps 17 70 56 22 66 55 22Lp 29 36 32 25 37 32 21

1440 400T 2.8Ps 23 91 73 28 86 72 29Lp 33 40 36 29 41 36 25

1620 450T 2.9Ps 29 93 36 91 37Lp 36 39 33 40 28

1800 500T 3.0Ps 35 45 45Lp 39 36 32

2160 600TPs 65Lp 37

Page 69: Diffusers Total

Performance Table

Waterloo 2.0 69 Tel: +44 (0) 1622 711511

Vane Swirl DiffusersSDVS SDVC

Waterloo

SDVSB SDVCBSupply

300-8400-16500-16600-16625-16

500-24600-40625-40

800-64825-64

m3/h l/s

54 15T 0.6Ps 3Lp -

72 20T 0.8Ps 5Lp -

90 25T 0.9Ps 6Lp -

108 30T 1.0Ps 8Lp -

144 40T 1.2Ps 12Lp 25

180 50T 1.4 1.2Ps 21 17Lp 31 27

216 60T 1.6 1.4 1.0Ps 30 24 7Lp 36 31 -

252 70T 1.8 1.6 1.1Ps 41 30 9Lp 41 36 22

288 80T 2.2 1.9 1.3Ps 54 40 11Lp 45 40 26

360 100T 2.3 1.5 1.0Ps 62 17 6Lp 45 32 22

450 125T 1.8 1.5 0.9Ps 26 11 1Lp 39 27 -

540 150T 2.1 1.6 1.1Ps 38 19 7Lp 43 32 21

720 200T 2.1 1.5Ps 34 14Lp 40 29

900 250T 2.5 1.8Ps 56 22Lp 46 35

1080 300T 2.2Ps 31Lp 39

1260 350T 2.5Ps 43Lp 44

Page 70: Diffusers Total

Waterloo 2.0 70 Tel: +44 (0) 1622 711511

Circular Perforated Face DiffusersRWI

IntroductionThe Waterloo high induction, perforated face circulardiffuser type RWI, has an adjustable radial diffusionpattern and provides excellent induction characteristics.The diffuser and faceplate are manufactured fromaluminium with the plenum being zintec steel, and havebeen designed with modern ceiling types in mind.With their perforated face design, these diffusers ensurethat the primary air is already mixed inside the diffuserwith the room air, which results in a rapid temperaturedecay and short throw.

Product DescriptionRWI Circular supply diffuser with perforated faceplateRWI-R Circular return diffuser with perforated faceplateUKDV Supply air plenumUKDVI Insulated supply air plenumUKRV Return air plenumUKRVI Insulated return air plenum

Features• Supply and exhaust applications for heating, cooling

and isothermal conditions

• Excellent induction characteristics

• Variety of air patterns

• Suitable for modular ceiling systems

FinishesPPM9010 (RAL 9010 20% Gloss White)Other colours are available on request

Advantages• Excellent aerodynamic performance• No ceiling effect required• Short throw

Order Example

RWI-200/UKDV-160TypeDiameterPlenum TypePlenum Spigot Diameter

W x H 50

ØD

2Z

E7.

5

ØD1ØXØA

RWI + UKDVI

W x H 50

ØD

2Z

E7.

5

ØD1ØXØA

RWI-R + UKRV

Z

7.5

KL

ØD1ØXØA

RWI

Waterloo

Nom SizeØD1 WxH ØD2 ØA

overallØX

aperture E K L Z

100 210x210 100 190 175 205 55 12.5 19 / 26.5 / 34125 210x210 125 230 215 215 60 20.0 19 / 26.5 / 34160 310x310 160 270 255 295 65 27.5 19 / 26.5 / 34200 310x310 200 370 345 295 70 27.5 19 / 26.5 / 34250 410x410 250 470 440 365 75 35.0 19 / 26.5 / 34315 510x510 315 570 535 435 90 35.0 19 / 26.5 / 34

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Waterloo 2.0 71 Tel: +44 (0) 1622 711511

Circular Perforated Face DiffusersRWI

Performance Table

Selection ExampleRWI-200Air Volume 111 I/s

Throw 1.2 mPressure Drop 37 PaNoise Level NR 26

Selection CriteriaCeiling Height 2.7mTemperature Differential -11KAverage room velocity Vr 0.15m/sNC is sound pressure level/Noise CriteriaCurve based on a room absorption of 8dBAll selections include the plenum

Waterloo

FaceplateHeight

Corrections

Z (mm) ‘T’ Throw (m) Pressure (Pa) Noise level (NR)

19 x 1.0 x 1.0 + 026.5 x 0.9 x 0.6 - 134 x 0.8 x 0.5 - 2

RWI Supply

m3/h l/s100Dia

125Dia

160Dia

200Dia

250Dia

315Dia

50 14T 0.2Ps 10Lw -

75 21T 0.3 0.2Ps 22 10Lw 24 -

100 28T 0.4 0.3Ps 35 14Lw 28 21

125 35T 0.5 0.4 0.3Ps 56 22 10Lw 33 25 -

150 42T 0.5 0.4Ps 29 15Lw 28 20

200 56T 0.7 0.6 0.5Ps 45 25 12Lw 34 24 -

250 69T 0.7 0.6Ps 33 19Lw 29 -

300 83T 1.1 0.9 0.8Ps 48 23 9Lw 32 21 -

400 111T 1.2 1.0Ps 37 17Lw 26 20

500 139T 1.5 1.3 1.1Ps 50 24 11Lw 30 24 21

600 167T 1.5 1.3Ps 33 16Lw 28 24

750 208T 1.9 1.6Ps 50 22Lw 34 28

1000 278T 2.3Ps 36Lw 34

1250 347T 2.9Ps 52Lw 38

Exhaust

100Dia

125Dia

160Dia

200Dia

250Dia

315Dia

7-

2122

30 626 -

46 1031 -

13 5 2- - -

23 9 418 - -

36 13 5 224 - - -

52 19 8 329 - - -

91 34 14 6 235 23 - - -

52 21 9 429 15 - -

75 31 13 534 22 - -

48 21 928 - -

84 38 1536 23 -

60 2429 19

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Waterloo 2.0 72 Tel: +44 (0) 1622 711511

Circular DiffusersRWK

IntroductionThe Waterloo circular diffuser type RWK has anadjustable radial diffusion pattern and providesexcellent induction characteristics. The diffuser andfaceplate are manufactured from aluminium and theplenum is zintec steel. The shape of both the plenumand the adjustable faceplate ensure an excellent airpattern, and the internal control disc can also beadjusted to achieve high induction rates and a lowsound power level.

Product DescriptionRWK Circular supply diffuser with plain faceplateRWK-R Circular return diffuser with plain faceplateUKDV Supply air plenumUKDVI Insulated supply air plenumUKRV Return air plenumUKRVI Insulated return air plenum

Features• Supply and exhaust applications for heating,

cooling and isothermal conditions

• Excellent induction characteristics

• Variety of air patterns

• Suitable for modular ceiling systems

FinishesPPM9010 (RAL 9010 20% Gloss White)Other colours are available on request

Advantages• Excellent aerodynamic performance• No ceiling effect required• Short throw

W x H 50

ØD

2Z

E7.

5

ØD1ØXØA

RWK + UKDVI

W x H 50

ØD

2Z

E7.

5

ØD1ØXØA

RWK-R + UKRV

Z

7.5

KL

ØD1ØXØA

RWK

Order Example

RWK-250/UKDV-250TypeDiameterPlenum TypePlenum Spigot Diameter

Waterloo

Nom SizeØD1 WxH ØD2 ØA

overallØX

aperture E K L Z

100 210x210 100 190 175 205 55 12.5 19 / 26.5 / 34125 210x210 125 230 215 215 60 20.0 19 / 26.5 / 34160 310x310 160 270 255 295 65 27.5 19 / 26.5 / 34200 310x310 200 370 345 295 70 27.5 19 / 26.5 / 34250 410x410 250 470 440 365 75 35.0 19 / 26.5 / 34315 510x510 315 570 535 435 90 35.0 19 / 26.5 / 34

Page 73: Diffusers Total

Waterloo 2.0 73 Tel: +44 (0) 1622 711511

Circular DiffusersRWK

Performance Table

Selection ExampleRWK-125Air Volume 42 I/s

Throw 1.1 mPressure Drop 29 PaNoise Level NR 20

Selection CriteriaCeiling Height 2.7mTemperature Differential -11KAverage room velocity Vr 0.15m/sNC is sound pressure level/Noise CriteriaCurve based on a room absorption of 8dBAll selections include the plenum

RWK Supply

m3/h l/s 100Dia

125Dia

160Dia

200Dia

250Dia

315Dia

50 14T 0.5Ps 6Lw -

75 21T 0.6 0.5Ps 20 7Lw - -

100 28T 0.8 0.7Ps 36 12Lw 20 -

125 35T 1.0 0.9 0.7Ps 50 20 8Lw 24 - -

150 42T 1.1 0.8Ps 29 12Lw 20 -

200 56T 1.3 1.1Ps 48 18Lw 31 -

250 69T 1.4 1.3Ps 28 12Lw 23 -

300 83T 1.7 1.5 1.4Ps 40 16 7Lw 27 - -

400 111T 1.9 1.7Ps 30 13Lw 24 21

500 139T 2.3 2.1 1.2Ps 45 20 7Lw 29 26 -

600 167T 2.5 1.5Ps 30 10Lw 31 21

750 208T 3.1 2.1Ps 48 15Lw 40 28

1000 278T 2.7Ps 30Lw 34

1250 347T 3.5Ps 54Lw 40

Exhaust

100Dia

125Dia

160Dia

200Dia

250Dia

315Dia

7-

17-

27 10- -

39 16 921 - -

51 22 1327 - -

40 23 820 - -

60 36 1426 21 -

53 2020 -

36 12- -

56 1824 21

80 26 1028 24 -

39 1430 23

2429

3232

FaceplateHeight

Corrections

Z (mm) ‘T’ Throw (m) Pressure (Pa) Noise level (NR)

19 x 1.0 1.0 026.5 x 0.9 x 0.6 - 134 x 0.8 x 0.5 - 2

Waterloo

Page 74: Diffusers Total

Waterloo 2.0 74 Tel: +44 (0) 1622 711511

Circular Plain Faced DiffusersRWV

IntroductionThe Waterloo circular plain faced diffuser type RWV hasa solid circular face providing a 360° air pattern withexcellent air induction characteristics. This all aluminiumdiffuser is fully adjustable allowing horizontal andvertical discharge patterns.

With their high induction ratios these diffusers ensurerapid primary and secondary air mixing with low noiselevels.

The diffusers are available with zintec steel plenums withthe option of thermal insulation lining on supplyplenums.

Product DescriptionRWV Circular supply diffuser with plain faceplateRWV-R Circular return diffuser with plain faceplateUKDV Supply air plenumUKDVI Insulated supply air plenumUKRV Return air plenumUKRVI Insulated return air plenum

Features• Supply and exhaust applications for heating, cooling

and isothermal conditions

• Excellent induction characteristics

• Variety of air patterns

• Suitable for modular ceiling systems

FinishesPPM9010 (RAL 9010 20% Gloss White)Other colours are available on request

Advantages• Excellent aerodynamic performance• No ceiling effect required• Short throw

Order Example

RWV-160/UKDV-160TypeDiameterPlenum TypePlenum Spigot Diameter

W x H 50

ØD

2

E7.

5

ØD1ØXØA

RWV + UKDVI

W x H 50

ØD

2

E7.

5

ØD1ØXØA

RWV-R + UKRV

7.5

KL

ØD1ØXØA

RWV

Horizontal Jet(Lowered Face Plate)

Vertical Jet(Raised Face Plate)

Waterloo

Nom SizeØD1 WxH ØD2 ØA

overallØX

aperture E K L

100 210x210 100 190 175 205 55 12.5125 210x210 125 230 215 215 60 20.0160 310x310 160 270 255 295 65 27.5200 310x310 200 370 345 295 70 27.5250 410x410 250 470 440 365 75 35.0315 510x510 315 570 535 435 90 35.0

Page 75: Diffusers Total

Waterloo 2.0 75 Tel: +44 (0) 1622 711511

Circular Plain Faced DiffusersRWV

Performance Table

Selection ExampleRWV-200(Horizontal throw)Air Volume 139 I/s

Throw 3.6mPressure Drop 28 PaNoise Level NR 30

Selection CriteriaCeiling Height 2.7mTemperature Differential -11KAverage room velocity Vr 0.15m/sNC is sound pressure level/Noise CriteriaCurve based on a room absorption of 8dBAll selections include the plenum

RWV Horizontal

m3/h l/s100Dia

125Dia

160Dia

200Dia

250Dia

315Dia

50 14T 0.7Ps 6Lw -

75 21T 1.2Ps 12Lw -

100 28T 1.6 1.3Ps 20 7Lw 21 -

125 35T 2.1 1.5 1.4Ps 31 11 4Lw 27 - -

150 42T 2.5 1.7 1.6Ps 42 16 6Lw 32 20 -

200 56T 2.1 2.0 1.4Ps 28 11 5Lw 27 - -

250 69T 2.3 1.8Ps 16 8Lw - -

300 83T 2.7 2.2 1.8Ps 23 11 8Lw 25 - -

400 111T 2.9 2.2Ps 18 14Lw 22 -

500 139T 3.6 2.5 2.2Ps 28 21 8Lw 30 20 -

600 167T 4.3 2.9 2.7Ps 40 30 18Lw 33 26 -

750 208T 3.5 3.3Ps 45 26Lw 34 25

1000 278T 4.0Ps 47Lw 34

1250 346T 4.7Ps 70Lw 40

Vertical

100Dia

125Dia

160Dia

200Dia

250Dia

315Dia

1.220-

1.844202.7 2.080 4026 -3.8 3.0 2.0125 60 1632 22 -

3.9 2.690 2426 -5.2 3.7 2.9150 42 2032 22 -

5.0 4.065 3226 206.4 5.2 4.690 46 2231 23 -

7.8 6.781 3928 22

10.0 9.5 7.6127 61 2434 27 -

12.0 10.087 3532 22

14.0 12.0136 5436 27

14.09633

Exhaust

100Dia

125Dia

160Dia

200Dia

250Dia

315Dia

4-

10-

17 5- -

26 924 -

33 13 430 - -

23 925 -

39 14 740 - -

52 20 1037 22 -

33 16 1134 21 -

24 18 627 - -

34 26 1432 28 -

40 2134 25

3132

Waterloo

Page 76: Diffusers Total

Waterloo 2.0 76 Tel: +44 (0) 1622 711511

Small Format Circular DiffusersMC

IntroductionThe Waterloo MC diffuser has been designed forboth supply and exhaust applications requiringcompact circular diffusers; unlike conventional highaspiration diffusers the MC has a small overall toneck size ratio. The diffusers are adjustable toproduce horizontal or vertical air patterns.

ManufactureThe MC diffusers are constructed from steel spinningsretained on aluminium spider braces.

Product DescriptionMC Small format circular diffuserLD Butterfly type louvre damperED&LD Equalising deflector & louvre damperBlind Fix Special blind fixing (see below)

Features• Compact frame design

• Robust steel construction

• Adjustable for vertical or horizontal air patterns

FinishesPPM9006 (RAL 9006 Matt Silver)PPM9010 (RAL 9010 20% Gloss White))PPG9010 (RAL 9010 Gloss White)Other colours available on request

WeightsMC/150 1.0 kgMC/200 2.1 kgMC/300 3.4 kgMC/450 4.8 kg

Accessories

Order Example

MC/150/PPM9010/LDTypeDiffuser SizeFinishExtras

Ceiling cut out

Horizontal diffusion

Duct / Diffuser size

VerticalProjection

Diffuser O/A size

FAC

EC

EILIN

GD

UC

T TO

ØB

57 89

5

ØC

FAC

EC

EILIN

GD

UC

T TO

57 89

5

ØA

LD - Standard arrangementfor supply ducts. Adjustablethrough diffuser face.

ED&LD - Equalisation at stubduct take off with volume control at diffuser face.

StandardScrew through duct

SpecialBlind fixing

Specify when ordering

Diffuser & Overall CeilingDuct Size Diameter Opening

ØA ØB ØC

150 228 203200 305 280300 381 356450 533 508

Waterloo

Page 77: Diffusers Total

Waterloo 2.0 77 Tel: +44 (0) 1622 711511

Small Format Circular DiffusersMC

Performance Tables

Supply Horizontal DiffusionRadius of diffusion.Minimum — space covered by one diffuser whichresults in a mean room air movement of 0.25 m/sMaximum — space covered by one diffuser whichresults in a mean room air movement of 0.10 m/s

Supply Vertical ProjectionProjection — downward throw to a terminal velocityvt = 0.5 m/s

Selection ExampleMC/200Total air flow rate 94 l/s

Horizontal Supply ApplicationThrow Min - Max —1.5 - 3.0mNoise Level — NC21Pressure Loss — 21PaExhaust Application

Noise Level — NC23Pressure Loss — 31Pa

Selection CriteriaNC level: equal to the peak sound powerlevel on an NC curve less 8dB for normalroom absorption.Pressure Loss (Pa): static pressure loss of thediffuser.Throw: radius of diffusion and projection —see individual tables

Exhaust

MC Air Volume

150Dia

m3/h 65 126 191 252 317l/s 18 35 53 70 88

Min - Max (m) 0.5-1.0 0.8-1.5 1.0-2.1 1.5-3.0 2.0-4.0Lw - - 18 26 34Ps 2 9 21 37 58

200Dia

m3/h 112 227 338 454 565l/s 31 63 94 126 157

Min - Max (m) 0.5-1.0 0.9-1.8 1.5-3.0 2.0-4.0 2.5-5.0Lw - - 21 31 40Ps 2 9 21 37 58

300Dia

m3/h 256 508 763 1016 1271l/s 71 141 212 282 353

Min - Max (m) 0.7-1.5 1.4-2.8 2.1-4.2 2.8-5.6 5.0-10Lw - 18 29 39 46Ps 2 9 21 37 58

450Dia

m3/h 572 1145 1717 2290 2862l/s 159 318 477 636 795

Min - Max (m) 1.3-2.5 2.5-5.0 3.8-7.6 5.0-10 6.0-12Lw - 21 35 45 53Ps 4 18 41 72 112

MC Air Volume

150Dia

m3/h 65 126 191 252 317l/s 18 35 53 70 88

Projection (m) 0.9 1.5 2.5 3.5 4.6Lw - 17 28 36 43Ps 4 14 33 56 91

200Dia

m3/h 112 227 338 454 565l/s 31 63 94 126 157

Projection (m) 1.3 2.1 3.0 4.3 5.2Lw - 19 31 39 46Ps 4 17 38 65 105

300Dia

m3/h 256 508 763 1016 1271l/s 71 141 212 282 353

Projection (m) 2.0 3.1 4.6 6.3 7.8Lw - 22 34 43 49Ps 5 20 48 80 125

450Dia

m3/h 572 1145 1717 2290 2862l/s 159 318 477 636 795

Projection (m) 3.2 5.0 7.6 10.1 14.2Lw - 27 40 48 55Ps 8 32 75 128 200

MC Air Volume

150Dia

m3/h 65 126 191 252 317l/s 18 35 53 70 88Lw - - 18 26 35Ps 3 11 23 38 56

200Dia

m3/h 112 227 338 454 565l/s 31 63 94 126 157Lw - - 23 33 41Ps 4 15 31 51 76

300Dia

m3/h 256 508 763 1016 1271l/s 71 141 212 282 353Lw - 17 32 42 50Ps 6 23 49 80 120

450Dia

m3/h 572 1145 1717 2290 2862l/s 159 318 477 636 795Lw - 27 42 52 -Ps 10 35 74 120 180

Waterloo

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Large Format Circular DiffusersWR

IntroductionThe Waterloo WR series is suitable for ceiling orexposed ductwork mounting and includes a rotatingcentral core adjustment feature to provide settings forprojection heating and spot cooling or conventionalhorizontal diffusion.Manufactured from aluminium spinnings, the diffusersare available with a range of dampers and equalisinggrids for effective control of air distribution.

Product DescriptionWR Large format circular diffuserLD Butterfly type louvre damper (sizes 6-18 only)WDD Opposed blade damper (sizes 21-24 only)SD/ED Splitter damper/Equalising deflector

Features• High air handling capacity

• Easily removable central core assembly

• Simple installation

• Maintenance free, quality product

• Core adjustment feature

• Range of accessories

• Suitable for supply and exhaust

FinishesPPM9006 (RAL 9006 Matt Silver)PPM9010 (RAL 9010 20% Gloss White)PPG9010 (RAL 9010 Gloss White)Other colours available on request

WeightsWR-6 1.2 kgWR-8 1.5 kgWR-10 2.3 kgWR-12 3.3 kgWR-15 5.5 kgWR-18 7.8 kgWR-21 10.5 kgWR-24 14.0 kg

InstallationRemove core from bayonet fixing and offer diffuserframe into opening.Screw fix through diffuser stack into duct. Replacecore ensuring the bayonet fixing is secure.

Order Example

WR-15/PPM9010/LDTypeDiffuser sizeFinishExtras

DUCT

REMOVABLE CORE

A (DUCT SIZE)

DH

E

FJ

C

BG (OPENING SIZE)

Size A B C D E F G H J6 152 305 340 51 5 136 320 85 61

8 203 407 457 64 5 149 430 85 74

10 254 508 569 86 5 171 530 85 96

12 305 610 680 95 6 180 640 85 105

15 381 762 851 121 6 206 800 85 131

18 457 914 1040 146 24 246 950 100 156

21 534 10801148 173 18 273 1100 100 183

24 610 10801170 173 18 273 1100 100 183

Waterloo

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Large Format Circular DiffusersWR

Performance TablesHorizontal Diffusion: Supply

Selection CriteriaRadius of Diffusion: The minimum andmaximum throw covered by one diffuser whichresults in an average air velocity in the occupiedzone of 0.25 m/s and 0.10 m/s respectively(based on 3.0m mounting height and 10°Ccooling)NC Level: Peak level on Noise Criteria curvesbased on sound power level re 10-12 W less 8dBroom absorption.Pressure Loss (Pa): Static pressure loss at thesupply duct.Cone Settings:Setting B: Flush for general applications producinghorizontal diffusion (performance as table)Setting A: Projection setting — multiply tabulatedPs x 1.7, add 2dB to NC values.Setting C: Exposed duct setting — multiplytabulated Ps x 0.8, subtract 2dB from NC values.

Exhaust:Ps (exhaust) = Ps (supply) x 1.2NC (exhaust) = NC (supply) + 3dBVertical Projection Data:Projection is based on isothermal supply conditionswith a terminal velocity of 0.5 m/s. Correct forheating, cooling and other Vt.For projection use graph below. For requiredthrow corrected for temperature differential selectsuitable size and neck velocity.Noise generation and Pressure loss: Use the tablefor horizontal diffusion corrected for cone setting.Selection ExampleSize 12 WR diffuser handling 350 l/s produces ahorizontal throw range of 2.1 - 3.9m and an NClevel of 34 with pressure loss of 25 Pa. Withvertical projection (setting A) the resulting throwwould be 10m for isothermal conditions and anNC level of 36 with a pressure of 42 Pa.

Size 6 8 10 12 15 18 21 24

23 4 5 10 20 30

4

5

10

Vn N

eck

velo

city

(m/s

)

Projection (m)

Example

CBA

Vertical Projection - Cone setting A

Projection Factor for Cooling ∆t= 10°C - 1.15

WR Air Volume

6

m3/h 263 328 392 457 522 652l/s 73 91 109 127 145 181

Min - Max (m) 1.0-1.5 1.0-1.8 1.2-2.4 1.5-2.7 1.5-3.0 2.1-3.9Lw 19 27 34 39 43 50Ps 24 37 53 72 95 141

8

m3/h 468 583 677 806 922 1152l/s 130 162 188 224 256 320

Min - Max (m) 1.2-2.1 1.5-2.7 1.8-3.3 2.2-4.0 2.2-4.5 3.0-5.5Lw 24 30 36 40 43 50Ps 21 33 47 64 84 131

10

m3/h 731 907 1095 1278 1458 1825l/s 203 252 304 355 405 507

Min - Max (m) 1.5-2.7 1.8-3.3 2.1-3.9 2.4-4.8 2.7-3.9 3.6-6.7Lw 25 32 38 43 47 54Ps 17 27 39 53 70 109

12

m3/h 1015 1282 1577 1840 2106 2632l/s 292 366 438 511 585 731

Min - Max (m) 1.5-3.0 2.1-3.9 2.4-4.8 2.7-3.9 3.0-6.0 3.9-7.5Lw 26 34 40 45 49 56Ps 16 25 37 50 65 102

15

m3/h 1642 2052 2448 2873 3283 4104l/s 456 570 680 798 912 1140

Min - Max (m) 1.8-3.6 2.4-4.8 3.0-6.0 3.3-6.6 3.9-7.5 4.8-9.5Lw 28 34 40 44 48 55Ps 13 20 29 39 51 80

18

m3/h 2362 2952 3543 4133 4723 5908l/s 656 820 984 1148 1312 1641

Min - Max (m) 2.4-4.5 3.0-6.0 3.6-7.0 4.2-8.1 4.8-9.3 6.0-12.0Lw 28 35 41 46 50 57Ps 10 16 23 32 42 65

21

m3/h 3226 4032 4838 5645 6451 8064l/s 896 1120 1344 1568 1792 2240

Min - Max (m) 4.2-8.4 4.8-9.7 5.4-10.8 6.0-12.0 6.6-13.2 8.1-16.5Lw 33 40 46 50 54 61Ps 7 12 17 23 30 46

24

m3/h 4205 5256 6300 7362 8424 10512l/s 1168 1460 1750 2045 2340 2920

Min - Max (m) 5.0-10.0 5.5-11.0 6.0-12.0 6.5-13.0 8.0-16.0 10.0-20.0Lw 35 41 47 51 55 62Ps 13 21 30 41 56 84

Waterloo

Heating Dt (°C) 5 10 15 20 25 30

Projection Factor 0.98 0.95 0.85 0.75 0.62 0.50

Terminal Velocity Vt (m/s) 0.75 0.50 0.40 0.30

Correction Factor 0.80 1.0 1.11 1.30

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Aircell Polymer Floor DiffusersWFO WFOV

Order Example

WFOPType

WFOPWFOPV

Ø225 O/A

AA

Ø5 holes on245 PCD

125

Ø125Nom.

Ø100Nom.

Ø211 cutoutØ200

336

4

150

221

23 M

in. T

ile50

Max

. Tile

Ø190

Ø201 hole

20

30 m

in

WFOD

IntroductionThe Waterloo Aircell WFO series floor diffuser offers thechoice of horizontal or vertical air patterns with its flipover design, as well as a host of other unique & patentedfeatures. The WFOV low pressure vertical supply discoffers vertical projection with a 50% increase in airvolume capacity, compared with standard WFO units.The WFO diffuser disc is 200mm Ø and it has beendesigned to resist permanent deformation when subjectedto point loads up to 500 kg and all materials used are fireretardant. The WFOV diffuser disc is suitable for pointloads up to 300kg.

Product DescriptionWFO Pressurised Floor Void - Tile installation suitable

for fitting into standard floor tile thicknesses of upto 50mm, supplied with a locking collar which isscrew fixed to the underside of the tile.

WFOV As above but with low pressure vertical airpattern disc

WFOS Pressurised Void - Slab floor installation suppliedwith a steel adaptor collar which is cast into thefloor slab. The diffuser can then be installed intothe collar with concealed spring clips.

WFOP Ducted installation with plenum supplied with aplenum which simply snap fits onto the lockingcollar. The plenum features a dual spigotconnection to suit 100mm or 125mm diameterducting.

WFOPVAs above but with low pressure vertical air pattern disc

WFOD Step Drilled InstallationThe diffuser disc only is supplied, suitable forinstallation into pre-cut holes in floor tiles.

Features• Unique ‘flip-over design’• Memory locating peg• Easy fit locking collar• Concealed fixing bracket for concrete / slab flooring• Combined damper / dirt tray with incremental damper

positioning• Heavy duty glass reinforced polycarbonate

construction• Snap fit aerodynamic compact plenumFinishWFO diffusers are available in a slate grey finish(RAL 7037 Mid Grey) as standard. Other colours can bespecified subject to a minimum quantity.

Advantages• Ability to change between horizontal and vertical

settings instantly• Commissioning settings are retained once set using the

memory locating peg• Reduced installation time with easy fit locking collar• Quick fit plenum

Waterloo

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Aircell Polymer Floor DiffusersWFO Standard Performance

Performance Graph

Selection ExampleWFO(Horizontal Setting)Air Volume 25 I/sJet velocity at 1m from the diffuser will be 0.26 m/sfor 3°C cooling Pressure Drop 25PaNoise Level NR 24

HORIZONTAL DIFFUSION

VERTICAL DIFFUSION AT 6°C COOLING

0.1

0.2

0.3

0.4

0.5

0.6

0.70.80.91.0

0.1

0.2

0.3

0.4

0.5

0.6

0.70.80.91.0

AIR

VEL

OCI

TY (m

/s)

AIR

VEL

OCI

TY (m

/s)

105 15 20 30 40 105 15 20 30 40AIR FLOW RATE (l/s) AIR FLOW RATE (l/s)

0.5m

1.0m

0.75

m1.

25m

1.5m

1.75

m

0.5m

0.75

m

1.0m

1.25

m

1.75

m

0.1

0.2

0.3

0.4

0.5

AIR

VEL

OCI

TY (m

/s)

5 10 15 20 25 30 40 50AIR FLOW RATE (l/s)

Tr = Ts(-3°C)

Tr = Ts(-6°C)

0.5m

0.75

m1.

0m1.

25m

1.5m 1.75

m

VERTICAL DIFFUSION AT 3°C COOLING

DATA SHOWN IS VALID FORTEMPERATURE CONDITIONSRANGING FROM ISOTHERMALTO 6°C COOLING

Example

Air Flow Rate (l/s)10 15 20 25 30 35 40

Static Pressure Loss (Pa)WFO 5 10 17 25 35 45 56WFOS 5 10 17 27 38 50 —WFOP 7 17 29 45 64 — —WFOD 4 7 12 19 26 35 45

Pressure Loss Data - Both Settings

All pressure loss data is based on a fullyopen damper

Air Flow Rate (l/s)10 15 20 25 30 35 40

NRLP (Ref. 8dB Room Absorption)WFO <15 <15 19 24 29 33 36WFOS <15 15 21 26 30 34 —WFOP <15 18 25 30 35 — —WFOD <15 <15 <15 20 24 28 32

Acoustic Data - Horizontal Setting

All acoustic data is based on a fully opendamper and horizontal diffusion.Reduce tabulated figures by NR3 for verticaldiffusion.

The dotted lines represent the approximatedistances from the diffuser where the jet airtemperature (Ts) is the same as the room airtemperature (Tr).

Waterloo

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Aircell Polymer Floor DiffusersWFOV Low Pressure Disc Performance

Performance Graph

Selection Example WFOVAir Volume 35 I/sJet velocity at 1.75m vertically from the diffuser will be0.39 m/s for 3°C coolingPressure Drop 20PaNoise Level NR 18

VERTICAL DIFFUSION AT 6°C COOLING

0.1

0.2

0.3

0.4

0.5

0.6

0.70.80.91.0

0.1

0.2

0.3

0.4

0.5

0.6

0.70.80.91.0

AIR

VEL

OCI

TY (m

/s)

AIR

VEL

OCI

TY (m

/s)

105 15 20 30 40 50 105 15 20 30 40 50AIR FLOW RATE (l/s) AIR FLOW RATE (l/s)

1.5m 0.5m

0.5m

0.75

m

0.75

m

1.0m

1.0m

1.25

m

1.25

m

1.75

m

1.75

m

VERTICAL DIFFUSION AT 3°C COOLING

Example

Air Flow Rate (l/s)10 15 20 25 30 35 40

Static Pressure Loss (Pa)WFOV 2 4 7 11 15 20 26WFOPV 7 17 29 45 64 — —

Pressure Loss Data

All pressure loss data is based on a fullyopen damper

Air Flow Rate (l/s)10 15 20 25 30 35 40

NRLP (Ref. 8dB Room Absorption)WFOV — — — — <15 18 22WFOPV <15 18 25 30 35 — —

Acoustic data

All acoustic data is based on a fully opendamper.

Waterloo

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Aircell Polymer Floor DiffusersInstallation

Type WFO & WFOV (Tile installation)Type WFO & WFOV Diffusers are suitable for installation intofloor tiles from 23mm to 50mm thick. A 211mm diameter holeis drilled/cut through the tile. Ensuring the aperture is free fromshavings/rough edges etc, insert the mounting frame into thehole. Locate locking collar onto the underside body of themounting frame and using the webs screw upwards andtighten to the underside of the tile. The main body of the unitshould now be firmly held in position, screw holes areprovided in the locking collar should additional fixing berequired. The combined damper/dirt tray can now bepositioned into the mounting frame. Ensure that the damperairways are open and place location peg into the slotprovided to lock in position.Finally select the air pattern required either vertical orhorizontal by referring to the disc location tab and place intothe aperture ensuring alignment tab engages with the cut outin the mounting frame. To remove the disc use the toolprovided.

Type WFOP & WFOPV (Tile installationwith plenum)Installation as described for WFO. Select plenum inlet spigotsize, if 125 diameter cut off square around markings with ahacksaw, remove swarf with a file and connect to ductworkwith a flexible tie. ‘Snap on’ plenum onto the ridge situated onthe locking collar.To remove the disc use the tool provided.

Type WFOS (Slab floor or wall installation)The steel sleeve is positioned to the customers requirementsand cast into concrete floor/wall slab. Ensure that the sleeveand face flange are free from debris, fit the mounting clamps,screws and cylinder nuts as shown, to the mounting frame,insert into steel sleeve, gradually tighten the screw headclockwise until the cylinder nut has expanded the clip into thesleeve groove. Establish that the mounting frame is secure andinsert damper/dirt tray locking pin, and diffuser disc. There is no requirement for the locking collar so this can bedisposed of.To remove the disc use the tool provided.

Type WFOD (Diffuser disc only)Drill/cut a 211mm diameter hole in the floor, 20.5 mm deep.Ensure the aperture is free of shavings/debris and place thedisc into position. To remove the disc use the tool provided.

Ø201

Ø190

23 M

in. Ti

le

50 M

ax. Ti

le

WFOWFOV

Ø211

WFOS

WFOP

>30m

m

20.5

WFOD

WFOPV

Waterloo

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Drum Jet DiffusersWDJ

IntroductionThe Waterloo WDJ Drum Jet diffuser is a highcapacity unit specifically designed forwarehouses, sports halls or factory units etcwhere a long throw is required. The WDJ is fullyadjustable to provide a full jet spread anddirectional control.The unit is constructed from aluminium extrusionsand comes complete with brush strips to providea low friction, airtight seal. Standard installationis screw fixing through the face flange.

Product DescriptionWDJ Drum Jet DiffuserOBSS Opposed blade damper

Features• Fully adjustable drum

• Fully adjustable air pattern

• Suitable for sidewall or exposed duct

applications

FinishesRAL 9010 WhiteSatin Anodised Aluminium

Advantages• Long throws• Low resistant friction on drum• Ease of adjustment

Order Example

WDJ-1806/OBSSTypeNumberDamper

No A B W H C D E Weight

906 300 217 261 170 36 87 146 1.5kg1206 376 217 337 170 36 87 146 1.7kg1806 529 217 490 170 36 87 146 2.0kg2406 681 217 642 170 36 87 146 2.5kg2010 579 319 540 271 63 138 207 5.5kg2510 706 319 667 271 63 138 207 6.5kg3010 833 319 794 271 63 138 207 7.0kg3510 960 319 921 271 63 138 207 7.5kg

A

75 BladePitch

B14

WDuct Width

HD

uct H

eigh

t

Adjustable Vanes

Brush Strip Seal

D6

C

30°

30°

WDJ

E

AdaptorFrame

WDJ + OBSS

Waterloo

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Drum Jet DiffusersWDJ

Selection ExampleWDJ-2406Air flow rate 400 I/sThrow 17.0 mPressure drop 45PaNoise level NR26

Selection CriteriaTemperature differential - 0°C (Isothermal)Terminal velocity - 0.25m/sNR level with a room absorptionfactor of 8dB.

Performance Table

Throw Correction FactorVane Angle 0° 5° 10° 20° 30° 40° 60°Factor 1.0 0.9 0.82 0.68 0.6 0.52 0.4

WDJAir Volume

m3/h 360 720 1080 1440 2160 2880 3600 4320l/s 100 200 300 400 600 800 1000 1200

906Jet Throw 3.5 16

Pa 20 75NC 13 26

1206Jet Throw 2 9.5 22

Pa 12 45 100NC 22 32

1806Jet Throw 5 15 26

Pa 24 48 77NC 16 25 31

2406Jet Throw 3.5 9 17 36

Pa 10 25 45 98NC 10 18 26 34

2010Jet Throw 1.8 4 8 18 34

Pa 12 22 50 80NC 14 20 28 35

2510Jet Throw 3 5 14 25 37 50

Pa 10 12 26 50 75 105NC 11 15 24 30 35 38

3010Jet Throw 2.2 4 10 18 28 40

Pa 10 18 40 50 75NC 10 20 27 32 30

3510Jet Throw 3.2 7.5 15 22 30

Pa 14 25 40 55NC 18 25 30 33

Waterloo

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Supply Air NozzlesVS3

IntroductionThe Waterloo supply air nozzles series VS3 areused for supplying air into areas requiring longjet throws and low noise levels. By arrangingindividual nozzles in a bank, correspondingthrow distances are considerably increased.

Product DescriptionVS3Supply air nozzleP Plain connectionD Connection to square ductR Connection to circular ductM Regulating damper (125,160 & 220Ø only)B1 Belimo LM24 motorB2 Belimo LM230 motorB3 Belimo LM24-SR motor

Features• Large range

• 3 duct connection types

• Extended throws when arranged in banks

• Low noise levels

• Motorised version available

FinishesNatural aluminium as standardOther colours available on request

Advantages• High air handling capacity• Easy to install• Remote seasonal adjustment on motorised

versions• Easy to clean aesthetic appearance

Order Example

VS3/M/D/B2/125TypeRegulating DamperDuct Connection TypeMotor Type (if required)Nominal Size

Dim. D L1 L2 L3 A

80 80 125 107 102 160100 100 155 120 115 200125 125 225 120 115 250160 160 315 150 145 315220 220 375 150 145 400

D60º

L3

L19

ØA

+68

ØA

-2Ø

A

R

L2

ØA

+68

ØA

+64

Dim. R315 R500 R630 R800

80 • • • •100 • • •125 • • •160 • • •220 • •

Circular Duct Size Availabilities

VS3/R (without motor)VS3/R/B* (with motor)

VS3/M/P(with regulating damper)

VS3/P

VS3/D (without motor)VS3/D/B* (with motor)

Waterloo

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Supply Air NozzlesVS3

80100

0.2

125160220

0.5

0.3

0.4

0.7

1

1.5

22.5

Size

Ø

Q (l/s)

55

V t (m

/s)

560 700 75015 30 40 85 110 140 200 280 420

L=5m10m

20m 30m

THROW

p(Pa

)

10

40

27

28

Q (l/s)

45

35

32

30

25

Ø80 Ø100 Ø125 Ø160

Ø220

20

150

25

4030

70

50

100

200

300

250

25 30 40 85 140 200 280 560 830

NC

NOISE LEVEL & PRESSURE DROP

Performance Graphs

Correction Factor for Multiple UnitsNº of Units 1 2 3 4NR Level Addition 0 +3 +5 +6Throw Factor 1.0 1.4 1.9 2.0

Selection ExampleVS3/125Air Volume 200 I/sThrow 30.0 mTerminal Velocity 0.48m/sPressure Drop 140 PaNoise Level NC 33

Waterloo

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Hi-Flo Jet DiffusersRWH RWH-PIntroductionThe Waterloo RWH diffusers have been designed tohandle high air flow rates and provide relatively longthrows which make them particularly suitable forconditioning of large spaces such as halls, auditoria,terminal buildings, warehouses and factories.The diffusers are versatile in application by virtue ofthe novel “reversible and rotatable” core designwhich allows the air jet to be adjusted for bothpattern and deflection. Units may be mountedindividually or in banks, in bulkhead arrangements ordirectly into stub ducts.The diffusers are constructed from aluminiumspinnings supported on a studding and spacerassembly. The core may be rotated through 180° toexpose either a straight or diffused core assembly. Inaddition, the diffuser spigot may be rotated within themounting plate (if supplied) to enable a full 360°adjustment, by releasing the tension bolts.

Product DescriptionRWH Complete diffuser assembly including diffuser

core, spigot and mounting plate (wall orceiling mounting).

RWH-P Diffuser core and spigot only (suitable formounting onto bulkheads or stub ducts thuseliminating the large mounting plate).

Features• Simple and effective air diffusion for large spaces• Long throw characteristics• High air handling capacity• Easy to install and adjust• Reversible core to produce long throw jet or short

throw diffuser patterns• Core rotatable through 360° for “eyeball” jet

direction• Jet may be deflected off axis by up to 15°• Available in four sizes• Multiple outlet arrangements

FinishesPPM9006 (RAL 9006 Matt Silver)PPM9010 (RAL 9010 20% Gloss White)PPG9010 (RAL 9010 Gloss White)Other colours available on request

WeightsSize RWH RWH-P200 1.6 kg 1.2 kg250 2.5 kg 1.8 kg315 4.2 kg 3.1 kg380 5.3 kg 4.1 kg

Order Example

RWH-P/380/PPM9010TypeDuct & Diffuser SizeFinish

Screw or rivetto ducting

ØB

Duc

t

1.5 - 15can be increasedwith longer screw

Clamp fixingto panel

ØA

ØC

Cut

out

ØB

Duc

t

Ducting(By others)

Ceiling or wall panel

Screw fixingthrough plate toceiling or wall

F15G

RWH assemblyDiffuser setting

RWH-P assembly

RWH Diffuser setting

RWH-P assembly

RWH assemblyJet setting

D30 E

Nom. size ØA ØB ØC D E F G200 247 198 235 92 98 22 28250 312 248 285 104 116 34 34315 377 313 350 124 154 47 68380 447 378 415 159 155 80 65

Waterloo

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Hi-flo Jet DiffusersRWH RWH-P

Performance Table

RWH-P Diffuser Setting RWH-P Jet Setting RWH DiffuserSetting RWH Jet Setting

Terminal Velocity Correction FactorsVt (m/s) 0.2 0.3 0.4 0.5 1.0 1.5Factor 2.5 1.7 1.25 1.0 0.5 0.3

Multiple Unit Correction FactorsNo. of units 1 2 3 4NR addition 0 +3 +5 +6Throw factor 1.0 1.37 1.86 2.06

SWL Spectrum Correction Data By OctavesFrequency (Hz) 125 250 500 1K 2K 4KDiffuser/ 0° -1 +1 +3 +8 +7 0Diffuser/ 15° 0 +2 +4 +8 +7 +2Jet/ 0° -3 -1 +3 +8 +6 +5Jet/ 15° +1 +3 +4 +7 +6 +1

Heating DifferentialSize 5°C 10°C 20°C

RWH-200 1.30 0.90 0.65RWH-250 1.20 0.85 0.60RWH-315 1.10 0.75 0.55RWH-380 1.00 0.65 0.45

15° Core Setting Correction FactorsJet Diffuser

NR addition +11dB +4dBPressure Loss Factor 1.25 1.25

All data is for the diffuser set for 0° deflection andoperating under isothermal conditions in either “jet” or“diffuser” pattern. Correction factors for 15° deflection aregiven below.When diffusers are mounted on a common plate/plenumthe noise level and throw will increase. Correction factors

are given in the table below.NR level = Peak level on NR curves based on SWL ref10-12 W less 8dB room absorption.Throw = Forward distance to the point where the jetvelocity has retarded to a terminal velocity of 0.5 m/s.Ps = Static pressure loss (Pa).

The above data is based on isothermal supply air conditions. To estimate maximum Vertical projection under warmingconditions multiply “jet” throw data above by the relevant factor below.

To estimate vertical projection under cooling conditions multiply throw (to relevantterminal velocity) by factors as follows:-10°C cooling x 1.15 5°C cooling x 1.10

RWH RWH-PAir Volume

m3/h 360 450 540 720 900 1080 1440 1800 2160 2880 3600 4320l/s 100 125 150 200 250 300 400 500 600 800 1000 1200

200Dia

JetThrow(m) 5.7 7.0 8.2 11.5 15.0 17.0

Lw - 18 24 32 38 44Ps 18 28 40 65 110 160

DiffuserThrow(m) 2.8 3.5 4.1 5.8 7.5 8.5

Lw - - 20 31 39 46Ps 18 28 40 65 110 160

250Dia

JetThrow(m) 4.0 5.1 6.0 7.2 10 12.0 16.5

Lw - 17 22 30 36 41 48Ps 6 10 14 21 31 48 80

DiffuserThrow(m) 2.0 2.6 3.0 3.6 5.0 6.0 8.3

Lw - - 14 24 32 38 49Ps 6 10 14 21 31 48 80

315Dia

JetThrow(m) 5.0 6.8 8.5 9.8 13.0 16.0 20.0 26.0

Lw - - 19 24 33 39 44 53Ps 4 8 13 18 30 45 60 105

DiffuserThrow(m) 2.5 3.4 4.3 4.9 6.5 8.0 10.0 13.0

Lw - - - 20 31 39 46 57Ps 4 8 13 18 30 45 60 105

380Dia

JetThrow(m) 5.4 6.8 8.0 10.5 14.0 16.4 22.0 28.0 35.0

Lw - - - 21 28 33 41 48 53Ps 3 5 7 12 20 30 50 70 100

DiffuserThrow(m) 2.7 3.4 4.0 5.3 7.0 8.2 11.0 14.0 17.5

Lw - - - 14 23 30 41 50 57Ps 3 5 7 12 20 30 50 70 100

Waterloo

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Waterloo 2.0 90 Tel: +44 (0) 1622 711511

PlenumsFull details of standard plenums are available from Head Office.

Typical standard plenum arrangementwith optional circular or rectangularconnections

Special designs are available to suit nonstandard applications, for example,rooftop air handling units and high levelducting.

Hi-flo Jet DiffusersRWH RWH-P

Waterloo

Page 91: Diffusers Total

Waterloo 2.0 91 Tel: +44 (0) 1622 711511

=C C

=

ØD

=B2 O/S

C

C

A O

/S

=B1 O/S

=

=

ØD

1 Element

2 Element

3 Element

4 Element

C

A O

/S

15 O/S

15 O/S

15 O/S

15 O/S

= CB3 O/S

A O

/S

ØD

A O

/S

B4 O/S=

ØD

Mounting Plates

Size A B1 ØDØ200 299 299 Ø235Ø250 349 349 Ø285Ø315 399 399 Ø350Ø380 499 499 Ø415

Size A B2 C ØDØ200 299 598 299 Ø235Ø250 349 698 349 Ø285Ø315 399 798 399 Ø350Ø380 499 998 499 Ø415

Size A B3 C ØDØ200 299 897 299 Ø235Ø250 349 1047 349 Ø285Ø315 399 1197 399 Ø350Ø380 499 1497 499 Ø415

Size A B4 C ØDØ200 299 1196 299 Ø235Ø250 349 1396 349 Ø285Ø315 399 1596 399 Ø350Ø380 499 1996 499 Ø415

1 Element

2 Element

3 Element

4 Element

Hi-flo Jet DiffusersRWH RWH-P

Waterloo

Page 92: Diffusers Total

Waterloo 2.0 92 Tel: +44 (0) 1622 711511

Supply and Exhaust ValvesVA VB VC

IntroductionA range of high quality valves for supply and exhaustapplications for commercial and industrial projects. SeriesV valves are best applied to air distribution systemshandling relatively low air flow rates within small circularductwork. The valves provide high initial resistance withwide throttling capability which is necessary to offset therelatively high system resistances.All valves are constructed from steel spinnings protectedby a polyester powder gloss white finish. Flanges arefitted with sealing gaskets and all units are supplied asstandard with plated steel mounting subframes.

Product DescriptionVA Supply valve with spindle locknutVB Exhaust valves with spindle locknutVC Exhaust valve with tamper proof screw locking of

inner core

InstallationAll units are supplied with a steel mounting subframewhich should be fixed to the prepared opening.• Cut aperture to suit subframe size shown in table below• Screw subframe into aperture• Offer valve body into subframe and rotate into

bayonet fixing

FinishesStandard - polyester powder gloss whiteOther colours are available on request

Order Example

VA/125TypeSize

ØB

H

ØB

ØD

Exhaust Valve - VC

ØS

ØB

ØD

H

ØS

ØD

H

Supply Valve - VA

Exhaust Valve - VB

VA VB VCØ100 Ø125 Ø160 Ø200 Ø100 Ø125 Ø160 Ø200 Ø100 Ø125 Ø160 Ø200

ØD 137 161 212 249 137 161 212 248 135 165 197 240S 74 97 127 156 74 97 127 156 — — — —B 94 110 145 194 75 100 130 157 87 103 130 155H 47 49 80 75 47 49 60 64 50 47 47 47

Subframe

ØB

ØA

H

SubframeØ100 Ø125 Ø160 Ø200

B 100 125 160 200A 130 155 190 236H 28 29 31 33

Waterloo

Page 93: Diffusers Total

Waterloo 2.0 93 Tel: +44 (0) 1622 711511

Supply and Exhaust ValvesVA VB VC

Performance Table

Selection ExampleVA/200Air Volume 80 I/sThrow 2.0 m Pressure Drop 27 PaNoise Level NR25

Selection CriteriaThrow is the radius of diffusion (Vt = 0.2 m/s)(Supply valve VA only).Ps is the static pressure loss (Pa).dBA is the ‘A’ weighted sound pressure levelbased on 8dB room absorption.

VAAir Volume

m3/h 36 72 108 144 180 216 288 360 432 504l/s 10 20 30 40 50 60 80 100 120 140

100 DiaThrow (m) 0.8 1.2 1.9 2.2

Ps 7 19 42 70Lw - 20 25 45

125 DiaThrow (m) 1.4 2.0 2.4 2.8 3.2

Ps 7 18 27 45 65Lw - 20 26 32 37

160 DiaThrow (m) 0.8 1.1 1.5 1.7 2.1 2.6

Ps 8 18 30 40 75 120Lw - 23 28 32 42 47

200 DiaThrow (m) 1.1 1.4 1.6 2.0 2.3 2.7 3.0

Ps 8 13 17 27 42 55 72Lw - - - 25 32 37 43

VBAir Volume

m3/h 36 72 108 144 180 216 288 360 432 504l/s 10 20 30 40 50 60 80 100 120 140

100 DiaPs 9 38 88 145Lw - 20 32 40

125 DiaPs 8 30 70 130 170Lw - - 24 32 37

160 DiaPs 15 35 55 95 130Lw - 20 24 30 35

200 DiaPs 7 13 19 32 55 70 90Lw - - - 27 33 37 41

VCAir Volume

m3/h 36 72 108 144 180 216 288 360 432 504l/s 10 20 30 40 50 60 80 100 120 140

100 DiaPs 22 75 150Lw - 24 33

125 DiaPs 8 32 55 95 130 180Lw - 21 25 29 34 40

160 DiaPs 6 20 42 75 120 160Lw - - 20 26 33 37

200 DiaPs 9 16 24 34 55 85 110 150Lw 20 22 24 27 32 37 43 47

Waterloo

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Waterloo

Waterloo 2.0 94 Tel: +44 (0) 1622 711511

Polymer Supply and Exhaust ValvesRPVB

WALL MOUNTING

300

MA

X

34

1. FRAME/FACIA2. DEFLECTION PAD3. INSTALLATION COLLAR4. OPTIONAL FLOW REGULATOR

113

CEILING MOUNTING

FIT FACIA WITH BAFFLE BELOW

1

2

REMOVE DIRECTIONBAFFLE FOR FULLRADIAL AIR PATTERN

4(SUPPLY)

4

1

(EXTRACT)

IntroductionThe Waterloo Aircell RPV air valves are anattractive and versatile form of air terminal foruse as either a side wall grille or ceiling diffuserin supply or extract applications. Moulded inABS engineering polymer to achieve a highquality finish, the units are available in 100mmor 125mm diameter neck sizes and can besupplied with optional pre-set flow regulators.The RPV valve comprises a flanged frame witheither a plain or perforated snap-fit fascia. Theperforated fascia can be configured to giveeither horizontal diffusion or a projection jetusing a concealed deflection pad. Both fasciatypes are fitted with a removable internal baffleto limit the jet spread angle when wall mountedor when ceiling mounted close to a wall. Thisinternal baffle may be simply snapped off togive 360° jet spread.The optional air flow regulators (AR) aredesigned to push fit into the frame to control airin either supply or extract mode and areavailable in three flow settings for each size.The units maintain a constant flow over apressure range of 50-200 Pa.

Product DescriptionRPVB Wall or ceiling application - perforated

fasciaAR121 12 l/s regulator for Ø100AR171 17 l/s regulator for Ø100AR251 25 l/s regulator for Ø100AR175 17 l/s regulator for Ø125AR255 25 l/s regulator for Ø125AR335 33 l/s regulator for Ø125DC1 Installation collar for Ø100DC5 Installation collar for Ø125

InstallationRPV valves simply push fit into circular ducting oroptional installation collar when using flexibleducting. Suitable for mounting in wall or ceilingtiles.

FinishesWhite - standardAll others subject to minimum order quantity

Order Example

RPVB125/AR335/DC5/WhiteTypeSizeRegulator (if required)Installation CollarColour

ØD

20

TYPE RPVB

L2

MAX42

15Ø184

ØA

L1

Wall or ceilinginstallation

Max TileThickness

Reversible airflow regulator (AR)suitable for supplyor extract

Installation collarsuitable for wallor ceiling mounting

Adjustable tabs tosuit installationmethod

Perforatedsnap fit fascia withremovable deflectionpad and direction baffle

ØA ØD L1 L2RPV100 110 97 140 85

RPV125 135 122 150 85

Page 95: Diffusers Total

Waterloo 2.0 95 Tel: +44 (0) 1622 711511

Polymer Supply and Exhaust ValvesRPVB

Performance Tables

Selection CriteriaThrow data is presented in table 1 for ceilingand wall installations and is based onisothermal conditions to a terminal air velocityof 0.25m/s.The ceiling installation data is for a partialradial pattern with the internal baffle fitted andthe fascia in a lowered position. Removing thebaffle produces a full radial pattern andreduces the throws by a factor of 0.85.Data for wall installations is based on aconfined jet and assumes that the valve ismounted within 300mm of the ceiling.Static pressure loss data presented in tables 1& 2 is valid for wall or ceiling valveconfigurations and is based on units fitted with

the internal baffle. Removal of the bafflereduces the pressure loss by a factor of 0.65.Noise data is shown in terms of sound powerbased NR levels (NRlw). Corrections factorsshould be applied as appropriate to theinstallation conditions to obtain the averagesound pressure based NR level. The data isbased on units fitted with the internal baffle.

Selection Example RPVB/125Air Volume 25 I/sThrow ceiling 5.5 m, wall 5.6m Ps pressure drop 16 PaNRlw <20

RPVBAir Volume

m3/h 36 54 72 90 108 126 144l/s 10 15 20 25 30 35 40

RPVB 100Dia

Throw (m) ceiling 3.6 4.7 5.7Throw (m) wall 3.3 4.1 4.7

Ps 2 4 8Lw - - -

RPVB 125Dia

Throw (m) ceiling 5.0 5.5 6.0 6.2 6.6Throw (m) wall 4.9 5.6 6.2 6.9 7.5

Ps 10 16 24 33 43Lw - - 20 26 32

RPVBAir Volume

m3/h 36 54 72 90 108 126 144l/s 10 15 20 25 30 35 40

RPVB 100Dia

Ps 3 5 10Lw - - -

RPVB 125Dia

Ps 13 21 31 43 56Lw - 20 26 32 38

RPVBAir Volume

m3/h 43 61 90 119l/s 12 17 25 33

RPVB 100Dia

Supply 40 47 53Extract 25 31 40

RPVB 125Dia

Supply 36 37 38Extract 22 27 32

Table 1: Supply Air Valve Data - Ceiling and Wall Installation

Table 2 : Extract Air Valve Data

Table 3 : Air Regulator Acoustic Data at 50 Pa - Supply and Extract

Waterloo

Page 96: Diffusers Total

WaterlooWaterloo Air Products PlcMills Road Aylesford Maidstone Kent ME20 7NB Tel: +44 (0)1622 717861Fax:+44 (0)1622 710648web: www.waterloo.co.ukemail: [email protected]

Waterloo 2.0 Tel: +44 (0) 1622 711511

All products conform to the Terms and Conditions of Waterloo Air Products Plc a copy ofwhich are available upon request.

Due to our continuous research and development programme, Waterloo Air Products plcreserve the right to alter products and prices without prior notification.

Copyright Waterloo Air Products plc 2005

Designed, Produced and Published by Waterloo Air Products pl,c, UK & Waterloo Bv NLPrinted in the Netherlands

September 2005

Waterloo declare that, at the time of print , all products are in accordance with relevantdirectives, as identified by HEVAC and other European Organisations, and will displaythe CE Marking where required.

GRILLES

A complete range of products suitable for all wall, ceiling and floorapplications. Most grilles are made from aluminium, and have a range offixed or moveable blades designed to give performance whilst remaining

aesthetically pleasing to the eye. Grilles are made to customer specified sizes,and colours (PPM/G); standard colour is PPM9010 (20% gloss white).

This range is complemented by the Aircell range of polymer Grilles andDiffusers.

AIR VOLUME DAMPERS

A complete range of pressure independent Variable air Volume and Constant airVolume dampers. Most volume dampers are regulated with an electronic motorand sensors, and are calibrated to customer specifications before delivery. Theconstant air volume damper requires no power source as it is controlled via a

mechanical device it is also calibrated before delivery.

All volume dampers are made from Zintec plate and all units (except CVD) can beordered with a single or double (with insulation) skin.

DIFFUSERS

A complete range of products designed to be installed in various ceilingsystems. Most diffusers are made from aluminium, and can be ordered with orwithout plenum chambers for easy connection to duct work. Diffusers can be

ordered in customer specified (PPM/G) colours; standard colour is PPM 9010(20% gloss white).

This range is complemented by the Aircell range of polymer Grilles andDiffusers.

EXTERNAL LOUVRESThe finest quality range of products for external wall applications. Rain water

leakage is controlled through the use of specially designed blades that direct theflow. Made from aluminium, with birdscreen or insect screen options.

All louvres are made to customer specified sizes and (PPM/G) colours; standardcolour is PPM 9006 (matt silver)

ACTIVE BEAMS

The finest quality range of high output active beams, used for ventilated heatingand cooling applications. These units have 4 pipe coils to allow heating and

cooling circuits to run simultaneously, giving constant and responsive control. Thedesign allows a large optimum capacity, and also allows the customer to specify

the nozzle type and pitch for individual circumstances.

Active beams are made from steel to a large range of customer specified sizesand as such are suitable for various different ceiling systems. Standard finish is

PPM 9010, however other (PPM/G) colours are available on request.