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LINEAR BAR GRILLS
OptimaAIR DIFFUSION PRODUCTS
LINEAR BAR GRILLES
Supply, Return, Extract Linear bar grilles and registers
OLG-1
OPTIMA model OLG-1 is a
return air grille with fixed profiled Olinear blades of 0 with 3 mm
thickness, set at 12.5 mm or 6
mm pitch.
F = Frame depth = 24 mmd
OLG-2-1 WAY
OPTIMA model OLG-2-1
Way is a return air grille with fixed Oprofiled linear blades of 15 -1 way
with 3 mm thickness, set at 12.5
mm or 6 mm pitch.
F = Frame depth = 24 mmd
OLG-3-2 WAY
OPTIMA model OLG-3-2
Way is a return air grille with fixed Oprofiled linear blades of 15 -2 way
set at 12.5 mm pitch.
F = Frame depth = 24 mmd
FW
Bt
BP
N A B
FW
Bt
BP
N A B
FW
Bt
BP
N A B
NOTE:
� Choice of core styles.O O O� Bar deflection = 0 , 15 - 1 way, 15 - 2 way
� Bar spacing = 6 mm, 12.5 mm
� Optional mounting frames and other accessories are available on request.
1
LINEAR BAR GRILLS
O OVariety of corners are available in linear bar grilles of models : 15 - 1 Way; 15 - 2 Way.
O� A 90 corner sill or ceiling mounted.O� A 135 corner sill or ceiling mounted.
O� A 90 external corner sill or wall mounted. O� A 90 internal corner sill or wall mounted.
300
30
0
300
300
300300
O� Wall or sill mounted type 135 external or internal corners are also available on request.� For positive alignment of adjacent sections alignment strips provided with each Linear Grille.
NOTE:
Linear Bar Grilles
� A � with End Cap � B � with End Flange
� C � with Open Ends � E � with both side End Caps/Flanges
OptimaAIR DIFFUSION PRODUCTS
Supply, Return, Extract Linear bar grilles and registers
2
LINEAR BAR GRILLES
LINEAR BAR GRILLS
BP
N
A
B Bt
FW
Fd
DP
Dd
BP
Fd
Fd
Dd
DP
BP
Fd
B
Technical Data:
N = Normal size = L x W
A = (L - 10) x (W - 10) = x x y
B = (x + 60) x (y + 60) =
(L + 50) x (W + 50)
F = Frame width = 30 mmW
*F = Frame depth = 24 mmd
B = Linear bar pitch =P
6 mm / 12.5 mmOB = 5 mm/ 4 mm � 15 -2 Wayt
OB = 3 mm � 0 , 15O-1 Wayt
D = Damper pitch = 25 mmP
D = Damper depth = 40 mmd
Overall grille depth = 24 + 40 mm
*F = Frame depth for TS framed
= 47 mm
N = Normal size = L x W
A = (L - 10) x (W - 10) = x x y
B = (x + 60) x (y + 60) =
(L + 50) x (W + 50)
F = Frame width = 50 mmW
*F = Frame depth = 47 mmd
B = Linear bar pitch =P
6 mm / 12.5 mm
B = Pitch of the vertical bladePV
= 19 mm
B = 5mm/4mm � 15 , 2 Wayt
O OB = 3mm � 0 , 15 -1 Wayt
D = Damper pitch = 25 mmP
D = Damper depth = 40 mmd
Overall grille depth = 47 + 40 mm
O
Operation of the Damper witha key (or) screw driver from theface of the grille, as shown thefigure.
OptimaAIR DIFFUSION PRODUCTS
Constructional Details and Dimensions
3
LINEAR BAR GRILLES
LINEAR BAR GRILLS
�A wide variety of core styles available.
�The core styles shown here can be used with or without border frames.
O�The linear bar spacing (Bar Pitch) at a distance of 6 mm and 12.5 mm are available. (For 15 - 2 way, Bar Pitch 6 mm is not available.)
�The supporting bars are placed at a distance of 300 mm (maximum) from each other.
Notes on Selection:
�The throw is normally selected up to 3/4 of the room width.
�For a large air volume where the throw is more than 3/4 of the room width distributing the air stream over several outlets will reduce the throw.
�The drop of the selected outlet plus 1.8 met. is the minimum grille or register height from the floor as shown in the figs.
�From the selection diagrams the size of the grille can be selected taking into account the throw, the velocity, pressure loss and noise level of the grille.
�For supply grilles and registers, in addition to air flow, air throw and spread characteristics are the principal factors for selection.
�In order to obtain long throw and narrow air O Opattern use a deflection between 0 or 15 angle.
OFor shorter throw and wide air pattern use 15 - 2 Way angle Linear Bar grille.
�Performance data shown in the selection charts on O Othe following pages is based on 0 , 15 -1 Way and
O15 -2 Way Linear Bar Grilles with widths from 50 mm to 300 mm of 1 mt. lengths.
Nomenclature:
2A = Effective free area in mK
V = Supply air volume m3/sec
V = Effective jet velocity m/secK
V = Maximum terminal velocity at distanceX
‘x’. m/sec.
V aver = V (max) x 0.3 m/secX X
X or T = Throw in meters
� t = Maximum temperature difference betweenX
core and room temperature
�t = �t = Temperature difference between supplyO Z
air temperature and room air temperature Type RLG - without ceiling effect.
V = Terminal velocity in m/sec.t
�P = Partial pressure in Pat
N.C. = Noise criteria
= Temp quotient
Ot CR
�t X
�tZ
O= Room temperature ( C)
Type RLG - with ceiling effect.
T - Throw
� 0.3 m
O� 11 Spread
V
�tO
O*t CR
�tX
V (m/s)X
Drop
0.8 m
Drop
T - Throw = 3/4 L
O*t CR
V�tO
�tX
O� 22 Spread
V (m/s)X
OptimaAIR DIFFUSION PRODUCTS
Engineering and Performance Data
4
LINEAR BAR GRILLES
LINEAR BAR GRILLS
Notes on Selection
�When volume control damper is partially closed for balancing purpose or for final air flow control, in addition to pressure drop and sound corrections, the throw pattern will be reduced between 10 and 18% depending on the amount of throttling. Pressure drop will increase accordingly.
�The sound level of a supply grille is in direct ratio to the velocity of the air pressure through it.
�Air passing through a properly selected outlet grille will not add any appreciable noise to the sound level of the existing system.
�In order for a new air conditioning system to perform to the designers plans and specifications, it must be properly balanced to deliver the required amount of air through each diffuser.
�Correct ceiling heights must be observed in order to prevent air stream to drop into the occupied zone which is generally about 1.8 m. above floor level.
Air volume q : Air volumes are given in Lt/sec.v
Throw T : The throw values given in the tables are related to the Linear Bar Grille placed below the ceiling. (Without ceiling effect).Three throw values are given for each qv to the corresponding terminal velocities V .tMinimum Throw �0.75 m/sec. Vt
Middle Throw �0.50 m/sec. Vt
Maximum Throw �0.25 m/sec. Vt
if the Linear Bar Grille is mounted nearer to the ceiling, these throw values should be increased by a factor 1.4
NC values : Noise date is given terms of NC levels. These have been derived from sound power level data -12(dB re 10 watts) by subtracting 10dB (Room effect) from the sound power levels.
Outlet size : Outlet sizes are mentioned on the left side of each row in terms of 1 mt. x grille width within a tolerance of � 10%.
Engineering and Performance Data
Linear Bar Grilles Correction factors for others lengths:
L (m)
Throw (m)
N.C.
1
x 1
+ 0
6 - 10
x 1.15
+ 8
2
x 1.05
+ 1
3 - 5
x 1.1
+ 4
OptimaAIR DIFFUSION PRODUCTS
Engineering and Performance Data
5
LINEAR BAR GRILLES
LINEAR BAR GRILLS
Throw Test Data
Product: Wall Linear Grille 1 metre x 300 mmRun No. 1 Air Volume 300 L/s
Distance from Outlet (m)
cm 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
2.5
7.5
15
22
30
45
60
90
120
0.28
0.25
–
–
0.30
0.30
0.28
–
1.96
1.32
1.45
1.35
1.22
2.57
1.04
–
1.50
0.89
0.69
0.64
0.56
1.27
1.55
–
1.09
0.84
0.79
0.76
0.64
0.07
1.19
0.28
–
0.94
0.74
0.76
0.79
0.64
0.84
0.97
0.36
–
0.94
0.69
0.71
0.71
0.56
0.71
0.81
0.33
--
0.79
0.64
0.64
0.66
0.51
0.64
0.64
0.30
–
0.61
0.51
0.53
0.56
0.46
0.53
0.48
0.28
–
0.61
0.51
0.53
0.56
0.46
0.53
0.48
0.28
–
0.43
0.36
0.41
0.43
0.38
0.46
0.38
0.25
–
0.38
0.33
0.33
0.36
0.33
0.41
0.36
0.25
–
0.30
0.28
0.28
0.30
0.30
0.36
0.33
–
Velocity in m/s.
Distance from Outlet (m)
Run No. 2 Air Volume 250 L/s
cm 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
2.5
7.5
15
22
30
45
60
90
120
1.52
1.04
1.02
0.99
0.84
2.03
0.94
–
1.32
0.81
0.66
0.66
0.48
0.17
1.45
–
0.48
0.43
0.43
0.46
0.33
0.36
0.30
–
1.02
0.74
0.64
0.64
0.46
0.89
1.12
–
0.81
0.66
0.64
0.64
0.48
0.76
0.79
0.28
0.74
0.61
0.58
0.61
0.41
0.61
0.64
–
–
0.66
0.53
0.53
0.56
0.38
0.48
0.41
–
0.53
0.48
0.48
0.51
0.36
0.41
0.33
–
0.25
0.25
-
–
–
0.25
–
–
0.41
0.38
0.36
0.38
0.28
0.30
0.28
–
0.33
0.30
0.30
0.30
–
0.25
–
0.30
0.28
0.28
0.25
–
0.25
–
Velocity in m/s.
OptimaAIR DIFFUSION PRODUCTS
Engineering and Performance Data
6
LINEAR BAR GRILLES
LINEAR BAR GRILLS
Selection Tables: For Area Factor AK
When opposed blade damper at 100% open position.For bar pitch B = 6 mm/12.5 mmP
L x Wmm
Bar Pitch
6 mm 2A mK
12.5 mm 2A mK
1000 x 50
1000 x 100
1000 x 150
1000 x 200
1000 x 250
1000 x 300
0.029
0.059
0.093
0.129
0.164
0.199
0.02
0.041
0.063
0.09
0.115
0.144
NOTE:
K factor = 0.58 ~ 0.68 for B = 12.5 mmP
K factor = 0.45 ~ 0.55 for B = 6 mmP
Selection Tables: For Area Factor AK
When opposed blade damper at 100% open position.For bar pitch B = 12.5 mmP
L x Wmm
Bar Pitch
6 mm 12.5 mm 2A mK
1000 x 50
1000 x 100
1000 x 150
1000 x 200
1000 x 250
1000 x 300
0.024
0.054
0.085
0.115
0.145
0.177
–
–
–
–
–
–
NOTE:
K factor = 0.54 ~ 0.6 for B = 12.5 mmP
OptimaAIR DIFFUSION PRODUCTS
Engineering and Performance Data
7
LINEAR BAR GRILLES
LINEAR BAR GRILLSE
ng
ine
eri
ng
an
d P
erf
orm
an
ce
Da
ta
Se
lec
tio
n t
ab
les
fo
r L
ine
ar
Ba
r G
rill
es
B =
Ba
r p
itc
h =
6 m
mP
No
min
al
wid
th (
mm
)
Lit
ers
/ S
ec
on
d /
Me
ter
50
10
0
15
02
00
25
03
00
35
04
00
45
05
00
50
A =
0.0
2K
P (
Pa
)t
Th
row
(m
)N
C
2.2
1.2
-3.0
-4.3
15
9.0
2.5
-4.3
-6.0
20
19
.04
.3-5
.0-7
.52
3
34
.05
.0-6
.0-8
.53
0
54
.05
.6-6
.8-1
0.0
36
15
0A
= 0
.06
3K
10
0A
= 0
.04
1K
20
0A
= 0
.09
K
25
0A
= 0
.11
5K
30
0A
= 0
.14
4K
P (
Pa
)t
Th
row
(m
)N
C
P (
Pa
)t
Th
row
(m
)N
C
P (
Pa
)t
Th
row
(m
)N
C
P (
Pa
)t
Th
row
(m
)N
C
P (
Pa
)t
Th
row
(m
)N
C
1.2
1.2
-3.0
-4.3
15
1.0
1.0
-2.5
-3.7
<1
5
0.8
0.6
-2.1
-3.5
<1
5
4.0
3.0
-3.7
-6.2
< 1
5
5.5
2.5
-4.1
-5.5
18
3.0
2.2
-4.0
-5.3
15
2.5
1.8
-3.5
-5.0
15
12
.04
.2-5
.0-7
.22
0
7.0
4.0
-4.7
-6.8
20
5.0
3.7
-4.3
-6.7
20
20
.05
.0-6
.0-8
.22
5
13
.05
.0-6
.0-8
.02
3
8.0
4.3
-5.7
-7.8
20
7.0
3.7
-5.0
-7.4
15
6.0
1.8
-3.7
-6.5
< 1
5
32
.05
.6-6
.6-9
.53
4
20
.05
.3-6
.3-9
.02
8
13
.05
.0-6
.2-8
.72
0
12
.05
.0-5
.6-8
.52
0
10
.03
.7-5
.0-7
.51
5
47
.06
.2-7
.5-1
0.6
38
29
.06
.0-7
.5-1
0.0
30
18
.05
.6-6
.8-9
.72
5
17
4.8
-6.2
-9.0
23
14
.04
.3-5
.6-8
.52
0
38
.07
.5-9
.3-1
1.0
35
25
.06
.8-8
.7-1
1.0
31
23
.06
.5-8
.1-1
0.5
29
20
.06
.0-7
.5-1
0.0
26
52
.08
.0-9
.5-1
2.5
40
30
.07
.5-8
.5-1
1.5
35
30
.07
.2-8
.2-1
1.0
32
27
.06
.8-8
.0-1
0.5
28
47
.08
.0-9
.5-1
2.5
37
47
.08
.7-1
0.0
-13
.03
9
37
.08
.0-9
.0-1
2.0
35
37
.08
.0-9
.0-1
2.5
38
37
.07
.5-8
.5-1
1.0
32
OptimaAIR DIFFUSION PRODUCTS
8
LINEAR BAR GRILLES
LINEAR BAR GRILLS
No
min
al
wid
th (
mm
)
Lit
ers
/ S
ec
on
d /
Me
ter
50
10
0
15
02
00
25
03
00
35
04
00
45
05
00
Se
lec
tio
n t
ab
les
fo
r L
ine
ar
Ba
r G
rill
es
B =
Ba
r p
itc
h =
12
.5 m
mP
En
gin
ee
rin
g a
nd
Pe
rfo
rma
nc
e D
ata
30
0A
= 0
.19
9K
25
0A
= 0
.16
4K
20
0A
= 0
.12
9K
15
0A
= 0
.09
3K
50
A =
0.0
29
K
10
0A
= 0
.05
9K
P (
Pa
)t
Th
row
(m
)
NC
P (
Pa
)t
Th
row
(m
)
NC
P (
Pa
)t
Th
row
(m
)
NC
P (
Pa
)t
Th
row
(m
)
NC
P (
Pa
)t
Th
row
(m
)
NC
P (
Pa
)t
Th
row
(m
)
NC
1.8
1.0
-2.5
-3.5
< 1
5
0.5
0.5
-2.0
-3.0
< 1
5
0.7
0.8
-2.0
-3.0
< 1
5
1.0
1.0
-2.5
-3.3
< 1
5
2.0
1.5
-3.0
-4.0
< 1
5
2.5
1.8
-3.2
-4.5
< 1
5
4.5
2.0
-3.5
-4.5
< 1
5
7.2
2.0
-3.5
-5.0
< 1
5
16
.0
3.5
-4.0
-6.0
18
10
.0
3.5
-4.0
-5.8
< 1
5
6.0
3.2
-8.5
-5.5
< 1
5
4.5
3.0
-3.5
-5.5
< 1
5
3.5
2.5
-3.0
-5.0
< 1
5
29
.0
4.0
-5.0
-7.0
25
17
.0
4.0
-5.0
-6.8
20
11.0
4.0
-4.8
-6.5
18 7.0
3.5
-4.8
-6.3
< 1
5
6.0
3.0
-4.0
-6.0
< 1
5
5.0
1.5
-3.0
-5.3
< 1
5
45
.0
4.5
-5.5
-8.0
31
27
.0
4.5
-5.7
-7.8
29
17
.0
4.3
-5.2
-7.5
23
11.0
4.0
-5.0
-7.0
15
10
.0
4.0
-4.5
-6.8
< 1
5
8.0
3.0
-4.0
-8.0
< 1
5
31
.0
6.5
-7.5
-10
.0
33
39
.0
5.0
-6.0
-8.5
33
17
.0
5.0
-6.2
-8.5
21
15
.0
4.5
-5.5
-7.8
20
24
.0
4.8
-6.0
-8.0
25
11.5
3.5
-4.5
-7.0
15
14
.0
4.0
-5.0
-7.5
18
21
.0
5.5
-7.0
-9.0
26
32
.0
6.0
-7.5
-9.0
30
19
.0
5.5
-6.5
-8.8
24
31
.0
6.5
-7.2
-9.8
30
25
.0
6.0
-7.0
-9.5
30
43
.0
5.5
-7.5
-10
.0
35
23
.0
5.5
-6.5
-8.8
23
25
.0
5.8
-6.6
-9.0
27
39
.0
6.5
-7.8
-10
.0
32
31
.0
6.0
-7.0
-9.5
27
39
.0
7.0
-8.0
-10
.5
34
OptimaAIR DIFFUSION PRODUCTS
9
LINEAR BAR GRILLES
LINEAR BAR GRILLSE
ng
ine
eri
ng
an
d P
erf
orm
an
ce
Da
ta
Se
lec
tio
n t
ab
les
fo
r L
ine
ar
Ba
r G
rill
es
B =
12
.5 m
mP
Lit
ers
/ S
ec
on
d /
Me
ter
50
10
0
15
02
00
25
03
00
35
04
00
45
05
00
P (
Pa
)t
Th
row
(m
)
NC
P (
Pa
)t
Th
row
(m
)
NC
P (
Pa
)t
Th
row
(m
)
NC
P (
Pa
)t
Th
row
(m
)
NC
P (
Pa
)t
Th
row
(m
)
NC
P (
Pa
)t
Th
row
(m
)
NC
2.0
1.0
-2.5
-3.5
< 1
5
1.2
1.0
-2.5
-3.5
< 1
5
0.8
1.0
-2.5
-3.5
< 1
5
0.6
0.5
-2.0
-3.0
< 1
5
8.0
2.0
-3.5
-5.0
< 1
5
5.0
2.0
-3.5
-5.0
< 1
5
3.0
2.0
-3.5
-5.0
< 1
5
2.5
2.0
-3.0
-4.5
< 1
5
18
.0
3.5
-4.0
-6.0
20
11.0
3.5
-4.0
-6.0
15
7.0
3.5
-4.0
-6.0
< 1
5
5.0
3.5
-4.0
-6.0
< 1
5
4.0
3.0
-4.0
-6.0
< 1
5
32
.0
4.0
-5.0
-7.0
27
19
.0
4.0
-5.0
-7.0
23
12
.0
4.0
-5.0
-7.0
19
8.0
3.5
-5.0
-7.0
< 1
5
7.0
3.0
-4.0
-6.0
< 1
5
5.7
1.5
-3.0
-5.5
< 1
5
50
.0
4.5
-5.5
-8.0
34
30
.0
4.5
-5.5
-8.0
31
19
.0
4.5
-5.5
-8.0
25
12
.5
5.0
-5.5
-8.0
18
11.0
4.0
-4.5
-7.0
< 1
5
9.0
2.5
-4.0
-6.0
< 1
5
43
.0
7.0
-8.0
-10
.5
36
43
.0
6.5
-8.0
-10
.0
33
27
.0
5.0
-6.0
-8.5
28
17
.0
5.0
-6.0
-8.5
23
16
.0
4.0
-5.0
-8.0
20
13
.0
3.0
-4.5
-7.0
17
36
.0
6.0
-7.5
-9.0
32
23
.0
5.5
-7.0
-9.0
28
21
.0
5.5
-7.0
-9.0
26
19
.0
5.0
-6.5
-9.0
23
48
.0
6.5
-7.5
-10
.0
36
28
.0
6.0
-7.0
-9.5
32
28
.0
6.0
-7.0
-9.5
29
26
.0
5.5
-7.0
-9.5
25
35
.0
6.5
-7.5
-10
.5
35
35
.0
6.5
-7.5
-10
.0
32
35
.0
6.0
-7.5
-10
.0
29
No
min
al
wid
th (
mm
)
30
0A
= 0
.17
7K
25
0A
= 0
.14
5K
20
0A
= 0
.11
5K
15
0A
= 0
.08
5K
50
A =
0.0
24
K
10
0A
= 0
.05
4K
43
.0
5.0
-6.0
-8.5
28
OptimaAIR DIFFUSION PRODUCTS
10
LINEAR BAR GRILLES
LINEAR BAR GRILLS
Linear Bar Grilles Fixing Details
OptimaAIR DIFFUSION PRODUCTS
Type ‘C’ fixing:
Concealed bracket type fixing
Recommended for sidewall, ceiling and sill appli-cations.
NOTE:
Standard supply is Type ‘C’ fixing.
Available finishes:
Natural anodized aluminum
Powder coated color finish. (Mention RAL color number)
Golden anodized aluminum
Bronze anodized aluminum
Mill finish aluminum
Available finishes for the accessories:
Mill finish aluminum
Powder coated in black matt finish
Ordering Data:
Specify
OPTIMA type and modelNominal size - L x W
1.2.
QuantityType of fixing
3.4.
5.6.
Surface finishRemarks
Example:
1. 2. 3. 4. 5. 6.
3000 x 150 mm 12 nos. Type ‘C’ fixing Powder coatedRAL 9016
OLG-1 D DamperBlack matt
11
LINEAR BAR GRILLES
LINEAR BAR GRILLS
Type ‘S’ fixing:
A counter - sunk screw type fixing
Recommended for sidewall, ceiling and sill applications.
Type ‘C’ fixing:
Concealed type fixing with wooden bar
Recommended for sidewall and sill applications.
Linear Bar Grilles Fixing Details
OptimaAIR DIFFUSION PRODUCTS
12
LINEAR BAR GRILLES