Roof downblast - exhaust belt drive gb-360hp – Greenheck Fan Centrifugal Roof Downblast Exhaust Fans GB User Manual
Page 42
42
Roof Downblast - Exhaust
Belt Drive
GB-360HP
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.
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.
1
3
⁄
4
(44)
Damper Size = 36 x 36
(914 x 914)
Roof Opening = 38½ x 38½
(978 x 978)
Shroud Thickness = 0.080
(2.0)
Motor Cover Thickness = 0.064
(1.6)
Curb Cap Thickness = 0.080
(2.0)
^Approximate Unit Weight = 460 lbs.
(209 kg)
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
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
C
U
R
V
E
Static Pr
essur
e (in. wg)
Static Pr
essur
e (Pa)
Volume (cfm x 1000)
3
Volume (m /hr x 1000)
RPM
(Belt)
HP
Density 0.075 lb/ft
3
Density 1.2 kg/m
3
8
7
⁄
8
(225)
*38
1
⁄
2
(978)
46
(1168)
Motor
HP
Fan
RPM
Static Pressure in Inches wg
0.5
0.75
1
1.25
1.5
1.75
2
2.25
2.5
2.75
360HP
1
420
CFM
6097
BHP
0.91
Sones
10.4
435
CFM
6576
BHP
1.02
Sones
10.8
1
1
⁄
2
500
CFM
8432
7000
BHP
1.56
1.53
Sones
13.4
12.5
2
525
CFM
9061
7808
5650
BHP
1.79
1.78
1.61
Sones
14.7
13.6
12.7
550
CFM
9681
8589
6998
BHP
2.05
2.06
1.98
Sones
16.0
14.8
14.2
3
590
CFM
10657
9719
8495
6528
BHP
2.50
2.57
2.52
2.32
Sones
18.0
16.3
15.7
14.9
630
CFM
11616
10772
9767
8525
6006
BHP
3.01
3.11
3.10
3.04
2.63
Sones
20
18.6
17.6
16.9
15.7
5
690
CFM
13062
12259
11464
10468
9335
7159
BHP
3.93
4.02
4.11
4.05
3.99
3.60
Sones
24
22
21
20
19.2
18.1
750
CFM
14487
13711
13002
12220
11282
10239
8513
BHP
5.02
5.10
5.22
5.26
5.20
5.13
4.83
Sones
27
25
24
24
23
22
21
7
1
⁄
2
803
CFM
15728
14985
14309
13647
12863
11960
10986
9445
BHP
6.13
6.22
6.33
6.46
6.44
6.37
6.30
6.01
Sones
31
30
28
27
26
25
24
23
855
CFM
16918
16236
15568
14946
14315
13544
12676
11761
10368
8273
BHP
7.37
7.47
7.58
7.71
7.82
7.76
7.69
7.61
7.32
6.63
Sones
35
33
33
31
29
29
27
27
26
25
MAXIMUM BHP AT A GIVEN RPM = (RPM/431)
3
MAXIMUM RPM = 855
TIP SPEED (ft/min) = RPM x 9.425
MAXIMUM MOTOR FRAME SIZE = 215T
58
3
⁄
4
(1492)