Roof downblast - exhaust belt drive gb-200hp – Greenheck Fan Centrifugal Roof Downblast Exhaust Fans GB User Manual
Page 32
32
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.
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
(1.0)
Curb Cap Thickness = 0.064
(1.6)
^Approximate Unit Weight = 166 lbs.
(75 kg)
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Roof Downblast - Exhaust
Belt Drive
GB-200HP
DO
N
O
T
S
E
L
E
C
T
T
O
T
H
E
L
E
F
T
O
F
T
H
IS
S
Y
S
T
E
M
CU
R
V
E
Static Pr
essur
e (in. wg)
Static Pr
essur
e (Pa)
Volume (cfm)
RPM
(Belt)
HP
Density 0.075 lb/ft
3
Density 1.2 kg/m
3
3
Volume (m /hr x 1000)
Motor
HP
Fan
RPM
Static Pressure in Inches wg
0.5
0.75
1
1.25
1.5
2
2.5
2.75
3
3.25
200HP
1/2
740
CFM
1961
BHP
0.30
Sones
8.7
895
CFM
2809
2331
1424
BHP
0.52
0.53
0.45
Sones
11.4
10.9
10.3
3/4
958
CFM
3116
2715
2153
BHP
0.63
0.65
0.63
Sones
12.8
12.1
11.6
1020
CFM
3409
3050
2602
1857
BHP
0.75
0.77
0.78
0.71
Sones
14.1
13.6
13.1
12.6
1
1125
CFM
3885
3584
3243
2804
2136
BHP
0.99
1.02
1.04
1.04
0.97
Sones
16.9
16.4
15.5
15.3
15.2
1
1
⁄
2
1205
CFM
4229
3967
3663
3314
2884
BHP
1.19
1.24
1.27
1.29
1.27
Sones
18.8
17.9
17.2
16.5
16.4
1285
CFM
4569
4343
4070
3770
3416
2278
BHP
1.43
1.49
1.52
1.55
1.57
1.40
Sones
21
20
19.1
18.1
17.8
18.9
2
1350
CFM
4843
4638
4384
4109
3811
2996
BHP
1.65
1.71
1.75
1.78
1.81
1.76
Sones
23
22
21
19.8
19.3
19.1
1415
CFM
5114
4919
4692
4442
4169
3492
2250
BHP
1.88
1.95
2.00
2.04
2.07
2.07
1.78
Sones
24
24
23
22
21
19.7
23
3
1520
CFM
5550
5368
5182
4952
4713
4166
3458
2850
2046
BHP
2.31
2.38
2.45
2.50
2.53
2.58
2.53
2.38
2.06
Sones
27
27
27
26
24
23
22
22
22
1625
CFM
5982
5812
5642
5448
5233
4767
4196
3859
3377
2725
BHP
2.80
2.88
2.95
3.02
3.06
3.13
3.16
3.12
3.01
2.76
Sones
32
31
31
29
28
27
25
24
23
22
MAXIMUM BHP AT A GIVEN RPM = (RPM/1106)
3
MAXIMUM RPM = 1625
TIP SPEED (ft/min) = RPM x 5.596
MAXIMUM MOTOR FRAME SIZE = 184T
1
3
⁄
4
(44)
5
1
⁄
2
(140)
*28
(711)
30
(762)
35
1
⁄
2
(902)