Table of Contents
Advertisement
Roof Downblast - Exhaust
Belt & Direct Drive
GB-200 • G-203
35
1
⁄
2
(902)
30
(762)
Damper Size = 18 x 18
(457 x 457)
Roof Opening = 20½ x 20½
(521 x 521)
Shroud Thickness = 0.064
(1.6)
Motor Cover Thickness = 0.040
Curb Cap Thickness = 0.064
(1.6)
^Approximate Unit Weight G/GB = 119/144 lbs.
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Motor HP
Fan
Belt
Direct
RPM
200
203
CFM
440
BHP
Sones
1/4
CFM
600
BHP
Sones
CFM
1/3
665
BHP
Sones
CFM
718
BHP
Sones
1/2
CFM
770
BHP
Sones
CFM
3/4
C-3/4
860
BHP
Sones
CFM
1
965
BHP
Sones
CFM
1028
BHP
Sones
1
1
⁄
2
CFM
1090
BHP
Sones
CFM
B-2
1140
BHP
Sones
2
CFM
1200
BHP
Sones
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects
of a birdscreen. The sound ratings shown are loudness values in hemispherical sones at 5 ft. (1.5 m) in a hemispherical free field calculated per AMCA Standard 301.
Values shown are for installation type A: free inlet hemispherical sone levels.
*28
(711)
5
1
⁄
(140)
2
1
3
⁄
(44)
4
(1.0)
(54/65 kg)
0
0.125
0.25
2435
1976
0.1
0.1
6.5
5.8
3320
2984
2637
0.25
0.26
0.26
8.5
7.9
7.3
3680
3378
3085
0.34
0.34
0.35
9.6
9
8.5
3973
3700
3422
0.43
0.43
0.45
10.8
10
9.6
4261
4013
3744
0.52
0.53
0.55
12.1
11
10.7
4759
4548
4289
0.73
0.74
0.75
14.1
13.3
12.9
5340
5158
4927
1.03
1.04
1.05
16.7
16
15.4
5689
5517
5309
1.25
1.26
1.27
18.5
17.8
17.2
6032
5870
5682
1.49
1.5
1.51
20
19.6
18.9
6308
6154
5980
1.7
1.71
1.72
22
21
21
6640
6494
6336
1.99
2
2.01
24
23
23
Volume (cfm)
Volume (m /hr )
Direct Drive RPM
C-860-
RPM
Static Pressure in Inches wg
0.375
0.5
0.75
MAXIMUM BHP AT A GIVEN RPM = (RPM/938)
TIP SPEED (ft/min) = RPM x 5.596
2089
MAXIMUM MOTOR FRAME SIZE = 184T
0.25
6.1
2706
2087
0.35
0.33
7.7
6.7
3109
2684
0.45
0.44
9
8.3
3477
3141
0.55
0.55
10.2
9.8
4068
3811
3085
0.77
0.77
0.74
12.4
11.8
11.1
4720
4520
4015
1.08
1.09
1.08
15
14.5
13.7
5101
4918
4488
1.29
1.31
1.32
16.8
16.4
15.6
5473
5301
4925
1.52
1.56
1.56
18.4
18.1
17.5
5779
5606
5267
1.74
1.77
1.79
20
19.7
19.1
6145
5969
5651
2.02
2.04
2.09
22
22
21
RPM (Belt)
RPM (Direct)
HP
3
Density 0.075 lb/ft
3
Density 1.2 kg/m
3
B-1140-
RPM
1.0
1.25
1.5
MAXIMUM RPM = 1200
3240
1.02
13
3911
2941
1.28
1.14
14.7
14.6
4450
3751
1.56
1.48
16.8
15.8
4832
4287
3439
1.79
1.75
1.61
18.5
17.5
16.5
5274
4829
4177
2.09
2.08
1.99
21
19.9
18.6
1.75
3
3077
1.69
16.7
31
Hide quick links:
Advertisement
Table of Contents
