dtv, dth and vvr

Product information - Version 3

DTV, DTH and VVRRoof- and wall fans

DTV Roof fan

DTH Roof fan

VVR Wall fan

2

Overskrift placeringTable of contents Choice of motor ........................... 4

DTV roof fans ............................... 5 - Technical specifications and drawings .............. 5 - Capacity diagrams .......................................... 6 - Sound diagrams ............................................... 8

DTH roof fans ............................. 10 - Technical specifications and drawings ............ 10 - Capacity diagrams ........................................ 11 - Sound diagrams ............................................. 12

VVR wall fans ............................. 14 - Technical specifications and drawings ............ 14- Capacity diagrams ......................................... 15- Sound diagrams ............................................. 16- Sound attenuation with MGO wall duct .......... 17- Assembly ........................................................ 17

Fan data ..................................... 18 - Capacity equations and calculations ............... 18- Sound equations and calculations .................... 18 - Calculation example ........................................ 19- Controllers and accessories guide .................. 20

Find more information on our website - Complete electronic documentation- EXselect Product selection software

for professional calculations .

Easy access for service and cleaning

DTV and DTH fans can be opened easily for cleaning and maintaining the fan, duct and duct system.

Usage EXHAUSTO wall and roof ventilation extractor fans are used in comfort systems and in industry, where low energy consumption, low noise levels, low running costs and reliability are required. The 3 product families are manufactured in cast aluminum, ensuring long-term, problem-free operation.

DTV and DTH are vertical and horizontal discharge extractor fans, respectively. The fan can be opened up making it easier to clean the impeller and to access the duct system.

WR is a wall extraction fan with radial discharge – a simple and dependable wall installation when installed with the MGO wall duct.

Roof and wall fans

DTV315-4-1 FC

Typedescription

Size Motor type

Qty.Phases/voltage

1 = 1 x 230 V3 = 3 x 400 V

Pole(rpm)

4 = 1 4006 = 900

InstallationVVR fans are used with MGO ducts, and are made of galvani-sed sheet metal with 25 mm mineral wool inner lining that insulates against sound and condensation. MGO ducts have built-in anti-back draught shutters which close when the fans are not running.

3

- effective ventilation to suit every solution

High effi ciencyThe specially designed centrifugal impellers with backward-bent blades are highly effi cient and have low running costs.

Vertical exhaustDTV prevents dirt accumu-lating on the roof surface and the downdraught of polluted air. And is less noisy.

Robust designDTV, DTH and VVR fans are manu-factured in cast aluminum that is extremely corrosion resistant.

The design offers optimum ventila-tion with minimum noise, even for large volumes of air.

SafetyA rust-free safety net covers the centrifugal impeller.Optional safety wire is available for DTH fans for when the installation is exposed or when there is a risk of vandalism.

Very reliableDirect operation of roof and wall fans is a very reliable operating method.

Wide range of use.DTV, DTH and VVR fans are ideal for ventilation tasks where effectiveness and low running costs are required.

The three product families are available in all sizes with adjustable variable motors.

InstallationDTV fans are designed for use with TGK roof ducts, for simple and optimal installation. DTH fans can be used with TGR and TGK ducts.

TGR and TGK roof ducts have a built-in cable duct and anti-back draught AOR and are repair circuit breaker ready. TGR and TGK roof ducts are available with 3 standard length fl ashings, depending on noise attenuation and roof pitch requirements.

TGR and TGK roof ducts are available with fl ashing to fi t required pitch.

TGK

TGR

4

Choice of motor

It is important to match the motor to the right size of roof or wall fan. At the same time it is recommended the ventilation unit be on-demand controlled.

EXHAUSTO roof (DTV and DTH) and wall (VVR) fans' motors are directly connec-ted to the centrifugal impeller and the motor is mounted outside the air stream.

• There are two types of DTV roof fan motors available: single-phase (4-1) or with frequency converter (FC)

• DTH roof fans are delivered with a single-phase motor (4-pole)• VVR wall fans are delivered with a single-phase motor (4-pole)• Motor enclosure is thermal class IP54 and all materials are at least thermal class

F (155 °C)• Every motor has built-in excessive current protection

General technical specifi cations Motor DTV/DTH/VVR

The FC motor for a DTV roof fan is a three-phase motor with a fi tted frequency converter with 1 x 230 V connection. The frequency converter is specially develo-ped for compatibility with the EXHAUSTO DTV roof fan and, when used with this motor, ensures the lowest possible operating costs.

The frequency converter protects the motor from overloading, blocking, over and under voltage, and over heating.The frequency converter is factory programmed by EXHAUSTO for optimal operation of DTV fans. It only has to be connected to a 1 X 230 VAC supply and to an EXHAUSTO automatic EFC1P, MAC10 or a MAC 11 controller. Descriptions of the controllers and their functions are on the back page.

Advantages• An energy saving motor with on-demand control• A very stable rpm unaffected by wind conditions or short term changes in

the system• It can be manually adjusted (linear scale from 0 - 10) via an EFC1P control panel with circuit breaker.• For automatic operation it can be connected to a MAC10 or a MAC11• A market tested and reputable product incorporating new technology

FC-motor technical specifi cations Motor DTV

The single-phase motors can be used with DTV, DTH and VVR roof fans

All types are 4-pole 1400 rpm and can be voltage regulated using EXHAUSTO EFC15, EFC35 and MAC10 with the add on module MAC10MPR.

Single-phase motor technical specifi cations Motor DTV/DTH/VVR

Cho

ice

of m

otor

5

DTV - Technical specifications and drawings

1. Connecting cable 2. Top part 3. Motor 4. Centrifugal impeller 5. Bottom part 6. Spigot 7. Locking screws 8. Handle 9. Hinges 10. Net

MotorOpera-

ting mode

Overloadprotection Power cable

Weight

kg

Measurement table (mm)

nrpm

UVolt

IAmp

P1kW

P2kW A B 1 2 C D E Length

[m] A BxB CxC D ø ESize

DTV160-4-1 1400 1x230 0,14 0,04 0,01 • • • 0,8 11 250 310 240 70 160

DTV200-4-1 1400 1x230 0,35 0,07 0,04 • • • 0,8 17 280 390 310 80 200

DTV250-4-1 1400 1x230 0,8 0,16 0,09 • • • 1,4 25 335 485 385 100 250

DTV250-4-1FC 1600 1x230 1,4 0,21 0,18 • • • • 1,6 25 385 485 385 100 250

DTV315-4-1 1400 1x230 1,8 0,37 0,25 • • • 1,2 35 380 580 465 115 315

DTV315-4-1FC 1600 1x230 2,7 0,44 0,37 • • • • 1,7 35 435 580 465 115 315

DTV400-4-1 1400 1x230 2,9 0,60 0,40 • • • 1,1 45 430 650 525 130 400

DTV400-4-1FC 1600 1x230 3,7 0,85 0,75 • • • • 1,6 45 465 650 525 130 400

DTV450-4-1FC 1700 1x230 9,4 1,47 1,10 • • • • 1,6 65 610 650 525 220 400

Technical equations and calculationsMotor4-pole = 1400 rpmThe actual rpm is dependent on the load.The capacity diagram and noise figures show real values.n = nominal rpmU = voltage (Volt)

Operating modeA Single-phase 1 x 230 V motor for manual, variable speed control via an EFC speed regulator or for automatic operation with a MAC10 voltage

regulator with MAC10 constant pressure regulator. The motor can be used at a fixed rpm (1400 rpm) when directly connected to 1 x 230 V.

B Motor with built-in frequency converter FC for use with manual variable speed control via an EFC1P electronic speed regulator or automatically with MAC10 or MAC11 constant pressure regulators.

I = The maximum current (Amp) for the whole regulated area or the full load current if it is greater.

P1 = maximum power consumption (Watt).P2 = power rating (Watt) is the power rating marked on the

motor.

Overload protection1 Built-in thermal protection (TP211) in the motor's power circuit.

2 Built-in overload protection in the frequency converter FC.

TemperatureCalculations for t = 20 °C

Density = 1.2 kg/m3

Median temperature: min. -12 °C, max. +60 °C

Ambient temperature: max. +40 °C

DTV

Cable typeC 3 x 0,75 mm2

D 3 x 1,0 mm2

E 7 x 0,34 mm2

EC

B

D

A

1

2

3

4

5

6

7

8

9

10

6

DTV250-4-1

DTV250-4-1FC

DTV315-4-1

DTV315-4-1FC

DTV Capacity diagrams

DTV160-4-1

DTV200-4-1

Capacity curve SFP curve Operation curvesConditions: see page 18

7

DTV Capacity diagrams

DTV - Resistance to flue gases

Throw

The throw is the distance from the fan's upper side to the point on the centre line where air speed has fallen to 2.0 m/s.

DTV400-4-1

DTV400-4-1FC

DTV450-4-1FC

Capacity curve SFP curve Operation curvesConditions: see page 18

8

DTV – sound diagrams

DTV315 LWA1

DTV160 LWA1

DTV200 LWA1

K[dB(A)] KW[dB]

KWA KpA 125 Hz 250 Hz 500 1 k 2 k 4 k 8 k

Hz Hz Hz Hz Hz

LW1 8 2 0 -8 -20 -27 -38

LW3 4 3 1 4 -2 -9 -19 -25

LpA3 -23

K[dB(A)] KW[dB]

KWA KpA 125 Hz 250 Hz 500 1 k 2 k 4 k 8 k

Hz Hz Hz Hz Hz

LW1 8 2 -2 -6 -12 -20 -25

LW3 5 3 5 0 3 -3 -14 -19

LpA3 -23

K[dB(A)] KW[dB]

KWA KpA 125 Hz 250 Hz 500 1 k 2 k 4 k 8 k

Hz Hz Hz Hz Hz

LW1 9 3 -1 -11 -22 -29 -38

LW3 3 -3 -1 1 0 -5 -17 -24

LpA3 -25

K[dB(A)] KW[dB]

KWA KpA 125 Hz 250 Hz 500 1 k 2 k 4 k 8 k

Hz Hz Hz Hz Hz

LW1 10 3 -2 -8 -12 -20 -26

LW3 3 0 3 1 -1 -5 -17 -21

LpA3 -25

DTV250 LWA1

Capacity curve LWA1Conditions: see page 18

DTV

9

DTV400 LWA1

K[dB(A)] KW[dB]

KWA KpA 125 Hz 250 Hz 500 1 k 2 k 4 k 8 k

Hz Hz Hz Hz Hz

LW1 7 2 -4 -4 -12 -18 -22

LW3 5 2 4 -1 3 -3 -14 -19

LpA3 -23

K[dB(A)] KW[dB]

KWA KpA 125 Hz 250 Hz 500 1 k 2 k 4 k 8 k

l ll l ll Hz Hz Hz Hz Hz

LW1 3 8 4 1 -2 -6 -13 -16 -21

LW3 6 0 7 8 6 -1 3 -4 -13 -20

LpA3 -22

DTV – sound diagrams

DTV450 LWA1

Capacity curve LWA1Conditions: see page 18

DTV

10

DTH - Technical specifications and drawings

1. Wiring connection duct

2. Cover

3. Motor

4. Centrifugal impeller

5. Splitter plate

6. Safety Net

7. Underside with spigot.

MotorOpe-

rating mode

Overload protection

Power cable* Weight

kg


nrpm

UVolt

IAmp

P1

kWP2

kWA B 1 2 Length

[m] A ø B ø C D ø ESize

DTH160-4-1 1400 1x230 0,14 0,04 0,01 • • 0,80 9 225 290 220 70 160

DTH200-4-1 1400 1x230 0,35 0,07 0,04 • • 1,05 13 255 365 260 70 200

DTH250-4-1 1400 1x230 0,8 0,16 0,09 • • 1,20 20 315 465 310 80 250

DTH315-4-1 1400 1x230 1,8 0,37 0,25 • • 1,15 28 360 550 375 80 315

DTH400-4-1 1400 1x230 2,6 0,60 0,40 • • 1,10 40 400 645 460 80 400

* Cable type: 3 x 0,75 mm2

Technical equations and calculations

Motor4-pole = 1400 rpmThe actual rpm is dependent on the load.The capacity diagram and noise figures show real values.n = nominal rpmU = voltage (Volt)



B Motor with built-in frequency converter FC for use with manual variable speed control via an EFC1P electronic speed regulator or for automatic operation with MAC10 or MAC11 constant pressure regulators.



motor.




Density = 1.2 kg/m3



DTH

11

DTH - Capacity curves

DTH160-4-1

DTH200-4-1

DTH250-4-1

DTH315-4-1

DTH400-4-1

DTH – Resistance to flue gases

Capacity curve SFP curve Operation curves

DTH

Conditions: see page 18

12

DTH - Sound curves

K[dB(A)] KW[dB]

KWA KpA 125 Hz 250 Hz 500 1 k 2 k 4 k 8 k


LW1 0 5 10 4 2 -1 -8 -22 -28 -36

LW3 4 -7 -4 -4 -3 -2 1 -9 -19 -26

LpA3 -25

K[dB(A)] KW[dB]

KWA KpA 125 Hz 250 Hz 500 1 k 2 k 4 k 8 k


LW1 0 7 11 4 1 -4 -7 -14 -27 -33

LW3 3 -6 -2 -1 -2 -3 0 -5 -15 -20

LpA3 -25

DTH315 LWA1

DTH160 LWA1

DTH200 LWA1

K[dB(A)] KW[dB]

KWA KpA 125 Hz 250 Hz 500 1 k 2 k 4 k 8 k


LW1 0 9 12 5 3 -5 -10 -20 -24 -32

LW3 2 -7 -6 -4 -5 -3 -1 -6 -18 -24

LpA3 -26

DTH250 LWA1

K[dB(A)] KW[dB]

KWA KpA 125 Hz 250 Hz 500 1 k 2 k 4 k 8 k


LW1 0 8 12 5 2 -4 -10 -17 -23 -33

LW3 4 -2 2 3 1 0 0 -3 -13 -18

LpA3 -24

Capacity curve LWA1

DTH


13

DTH - Sound curves

DTH400 LWA1

K[dB(A)] KW[dB]

KWA KpA 125 Hz 250 Hz 500 1 k 2 k 4 k 8 k


LW1 0 5 8 2 0 -2 -6 -14 -23 -29

LW3 2 -9 -5 -2 -3 -4 -1 -7 -16 -20

LpA3 -26

Capacity curve LWA1

DTH


14

VVR - Technical specifications and drawings

1. Electrical connection

2. Cover

3. Motor

4. Centrifugal impeller

5. Motor plate

6. Safety net

7. Underside with spigot

8. Wall flange

Technical equations and calculations

Motor4-pole = 1400 rpmThe actual rpm is dependent on the load.The capacity diagram and noise figures show real values.n = nominal rpmU = voltage (Volt)



B Motor with built-in frequency converter FC for use with manual variable speed control via an EFC1P electronic speed regulator or for automatic operation with MAC10 or MAC11 constant pressure regulators.



motor.




Density = 1.2 kg/m3



VV

R

MotorOpe-

rating mode

Overload protection

Powercable* Weight

kg


nrpm

UVolt

IA

P1

kWP2

kWA B 1 2 Length

[m] A ø B C x C D ø ESize

VVR160-4-1 1400 1x230 0,14 0,04 0,01 • • 0,80 10 235 275 335 65 160

VVR200-4-1 1400 1x230 0,35 0,07 0,04 • • 1,05 13 260 345 385 65 160

VVR250-4-1 1400 1x230 0,8 0,16 0,09 • • 1,20 21 320 440 435 75 250

VVR315-4-1 1400 1x230 1,8 0,37 0,25 • • 1,15 28 365 525 500 75 315

* Cable type: 3 x 0,75 mm2

5208

003

side

2

C E

D A

B3

2

1

8

7

6 4 5

15

VVR160-4-1 VVR250-4-1

VVR - Capacity curves

VVR200-4-1 VVR315-4-1


VV

R


16

K[dB(A)] KW[dB]

KWA KpA 125 Hz 250 Hz 500 1 k 2 k 4 k 8 k


LW1 0 7 11 4 0 -1 -7 -18 -29 -38

LW3 4 -5 -2 -3 -4 -1 3 -7 -17 -24

LpA3 -23

K[dB(A)] KW[dB]

KWA KpA 125 Hz 250 Hz 500 1 k 2 k 4 k 8 k


LW1 0 10 11 3 2 -2 -11 -19 -27 -33

LW3 3 -7 -6 -4 -5 -4 0 -4 -15 -21

LpA3 -24

K[dB(A)] KW[dB]

KWA KpA 125 Hz 250 Hz 500 1 k 2 k 4 k 8 k


LW1 0 9 12 5 3 -4 -10 -18 -25 -31

LW3 2 -6 -1 -1 -3 -4 -2 -4 -13 -18

LpA3 -25

K[dB(A)] KW[dB]

KWA KpA 125 Hz 250 Hz 500 1 k 2 k 4 k 8 k


LW1 0 6 10 6 4 -5 -8 -15 -25 -30

LW3 6 -3 2 3 0 -2 4 -2 -9 -14

LpA3 -22

VVR – Sound curves

VVR160

VVR200

VVR250

VVR315 LWA1

LWA1

LWA1

LWA1

Capacity curve LWA1

VV

R


17

Pressure drop in the MGO wall duct

Tolerance +/- 4 dB. Insertion attenuation is given, including noise generated by the overpressure damper AO.- = noise generation (in the octave band) from the overpres-sure damper in question.

Conditions:a. The insertion attenuation is given with an air flow at 80% of max. output for VVR (1400 rpm) in the same size as MGO.b. VVR mounted on a MGO with 350 mm length with antiback draught.

pt = Total pressure drop with open anti-back draught shutter.

Size 125 Hz 250 Hz 500 Hz 1.000 Hz 2.000 Hz 4.000 Hz 8.000 Hz

MGO160 -2 2 6 12 13 6 5

MGO200 -4 2 4 12 8 5 4

MGO250 -5 0 3 11 4 4 2

MGO315 -5 -1 1 10 4 4 3

VVR - Sound attenuation with MGO

VVR - Assembly

Figure 1When the wall duct (MGO) is flush with the inner wall, a cover flange (MGAF) and a gate coupler (ILMF) should be mounted, before mounting the diffuser (FLD).

Figure 2Mount a gate (ILU) and coupler (MF) or a spiro tube (SR) if the wall duct (MGO) length is less than the thickness of the wall. Then mount the diffuser.

Figure 3Mount a gate (ILU) and spiro tube if there is a large distance between the wall duct (MGO) and extractor position.

MGOSize

AØ mm

B x Bmm

CØ mm

Weightkg

Accessories

Diffuser Cover flange intake gate

MGO160 165 210 165 3 FLD160 MGAF160 ILMF160

MGO200 205 260 205 4 FLD200 MGAF200 ILMF200

MGO250 255 310 255 5 FLD250 MGAF250 ILMF250

MGO315 320 360 320 6 FLD315 MGAF315 ILMF315

Insertion attenuation

VV

R

5207401

Tryktabskurve

MGO incl. AOVedr.:

Emne:

Ref.:

Mål:

Dato:

Rev.C

Rev.B

Rev.A

Rev.F

Rev.E

Erstatter:

Rev.D

Tegn.nr.:

Godkendt:

06.02.90

JFN/LON

30

20

10

5

200 300 400 1000 2000 3000600 800

100

50

40

MG

O16

0

MG

O20

0

MG

O25

0

MG

O31

5

100080060050040030020010050

04.11.97

pt[Pa]

qV[I/s]

qV[m3/h]

1000 l/s = 1m3/s

MGAF

FLD

ILMF

MGO

AO

VVR

FLD

MGO

AO

VVRMF ILU

MGO

AO

VVRILU

SR

MGO

VVR

MGAFILMF

FLD

Max. 400 mm

18

Temperature = 20°C

Density = 1,2 kg/m3

SFP = specific electricity consumption for air transport (J/m3)

qv = volume flow (l/s)

P1 = Maximum power consumption (watt)

P1 = SFP x qv x 10-3

P1 = SFP (J/m3) x qv(l/s)

1.000

Capacity equations and calculations


Equations and calculations for sound data

The fans must be installed with sound attenuators in the duct system in accordance with the sound requirements of the venti-lated premises.

To meet current standards the duct system should be insulated for sound, thermal loss and condensation.

Sound output levels are used as the basis for calculating the sound pressure level in the operational area of the unit, and the level of silencing required in the duct system itself.

KW: Correction factor for calculating sound output in the first octave band.

KWA: Correction factor for calculating A-weighted sound output.

KpA: Correction factor for calculating A-weighted sound pressure.

LW: Sound output level dB - Reference 1 pW - Tolerance: 63 dB.

I: Upper operating area.

II: Lower operating area.

LW1: Sound output level for extractor channel LW1 = LWA1 + KW LWA1 can be read from the curve diagram.

LW3: Sound output level to surroundings LW3 = LWA1 + KW LWA1 can be read from the curve diagram.

LWA3:A-weighted sound output to the surroundings LWA3 = LWA1 + KWA LWA1 can be read from the curve diagram.

LpA3: Sound pressure level dB(A) at a distance of 10 metres from hemi-spherical sound dissipation in free field and with insulated connection ducts. LWA1 read as - LpA3 = LWA1 + KpA, sound pressure level at 20 meters distance: LpA3 (20 m) = LpA3 (10 m) - 6 dB.

EXHAUSTO DTV, DTH and VVR fans are measured with a straight pipe (length 3 x diameter) immediately before the fan. A system pressure loss can occur if the minimum distance is not maintained during installation and this should be taken into consideration during project planning. The size of loss can be calculated from the relevant technical literature.

EXHAUSTO DTV, DTH and VVR fans are measured with a pipe that has the same dimensions as the fan’s spigot. Apart from the DTV450-4-1FC fan, which is measured with a pipe with diameter of 500.

The stated operation curves show the characteristic of the fan with downwards regulation.

The SFP curves show the specific electricity used in J/m3 ventilated air volume through the fan.

Measurement setup

pt = Total pressure

Fan

data

19

Calculation example:

Suction side (extract air):

Surroundings (sound output):

Sound data – a calculation example

Calculation example

DTV450-4-1FC

Frequency band (Hz) 125 250 500 1 K 2 K 4 K 8 K

LWA1 read in area I 72 72 72 72 72 72 72

Correction factor KW (LW1) is read from the table. 3 4 -2 -6 -13 -16 -21

Ljudeffektnivå sugsidan LW1 75 76 70 66 59 56 51

Frequency band (Hz) 125 250 500 1 K 2 K 4 K 8 K dB(A)

LWA1 read in area I 72 72 72 72 72 72 72 72

Correction factor KW (LW3) is read from the table. 0 8 -1 3 -4 -13 -20 6

Sound output level in surroundings LW3 72 80 71 75 68 59 52 78

Viktning dB(A)

LWA1 read in area I 72

Correction factor KpA (LW3) is read from the table. -22

Sound pressure level in surroundings LpA3 50

Surroundings (sound pressure):To calculate sound data please see our product portfolio programme on our website.

Fan:DTV450-4-1FC

Desired output:qv = 1100 l/s (3.960 m3/h) og Pt = 200 Pa

Reading:Read LWA1WA1W (extractor channel) from the curve diagram.LWA1WA1W : 72 in area I

Fan

data

K[dB(A)] KW[dB]

KWA KpA 125 Hz 250 Hz 500 1 k 2 k 4 k 8 k


LW1 3 8 4 1 -2 -6 -13 -16 -21

LW3 6 0 7 8 6 -1 3 -4 -13 -20

LpA3 -22

Controllers and accessories guide

Electronic speed regulator for FC motors, uses 0 -10 V control signal. Used for manual variable rpm control for all EXHAUSTO fans installed with FC motors.

The EPC1P can variably adjust the rpm between 25-100% of the max. rpm.

Speed regulator for FC motors

EXHAUSTO electronic regulators EFC are designed to variable control the speed of EXHAUSTO fans. The EFC controller can variably adjust the motor's rpm and in this fashion adjust the fan's capacity (25-100% of full capacity). The controller's built-in potentiometer can set a minimum current / minimum air fl ow.The EFC speed controller has radio noise suppression, is DEMKO approved and CE certifi ed. EFC controllers are available in four sizes and in different types.

Speed controller

EXHAUSTO constant pressure controllers MAC10 and MAC11 (Multi Application Controller) are microprocessor based controllers, designed to control the pressure of motor driven fans that are fi tted with FC frequency converters. For single-phase motors use the MAC10 with the MAC10MPR add on module.MAC11 is available with LonWorks® – a communication platform for DDC units and for connecting outside air temperature sensors for use with outside air temperature compensation.

Constant Pressure Regulator

EFC1P

EFC

MAC

EXHAUSTO MGO wall ducts are galvanised with 25 mm mineral wool inner lining to insulate against sound and condensation.

They also have build in anti-back draught shutters (AO) which close when the fans are not running and prevent back draughts into the ventilation ducts or locality. The dimension lengths of MGO ducts vary from 210 - 350 mm to cater for different wall thicknesses.

Wall ducts for VVR fans MGO

EXHAUSTO TGR (round) and TGK (square) roof ducts are specially designed (operationally and architecturally) for use with EXHAUSTO roof fans.

The roof ducts achieve optimal sound attenuation with very little pressure drop. The roof fan is mounted directly on top of the roof duct. An EXHAUSTO FLD diffuser can be mounted on the bottom, or the duct can connect to the duct system via a spiro tube.

This optimal solution achieves minimal pressure drop and a low noise level even with large air volumes. TGR and TGK ducts come with anti-back draught shutters AOR as standard. EXHAUSTO TGR and TGK roof ducts are available in six sizes and three different lengths, with fl ashing to suit roof pitch.

Roof ducts TGR/TGK

3003

070

- 03

.201

1 W

e re

serv

e th

e ri

ght

to m

ake

chan

ges

with

out

noti

ce.

EXHAUSTO A/S Odensevej 76 DK-5550 Langeskov

Tel. +45 65 66 12 34Fax +45 65 66 11 [email protected]

dtv, dth and vvr

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