Greenheck USGF Brochure & Specs page 16

USGF-180HP - Belt Drive
35 ⁄
3
8
(899)
30
(762)
Roof Opening = 201/2 x 201/2 (521 x 521)
Windband Thickness = 0.051 (1.3)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight = 190 lb. (86 kg)
All dimensions in inches (millimeters).
*May be greater depending on motor.
^Weight shown is largest cataloged Open Drip Proof motor.
Model Motor
Number hp
USGF-180HP-4 1/4
USGF-180HP-3 1/3
USGF-180HP-5 1/2
USGF-180HP-7 3/4
USGF-180HP-10 1
USGF-180HP-15 11/2
USGF-180HP-20 2
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings do not include the effects
of appurtenances (accessories). The sound ratings shown are loudness values in fan 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. The AMCA Certified Ratings Seal applies to sone ratings only.
1
28 ⁄ *
5
8
(727)
21
(533)
1 ⁄
3
4
(44)
Fan
rpm
0.5 0.75
CFM 1570
795 BHP 0.22
Sones 8.3
CFM 1799
845 BHP 0.26
Sones 9.5
CFM 2104 1688
925 BHP 0.34 0.35
Sones 10.8 9.8
CFM 2581 2323
1065 BHP 0.50 0.52
Sones 13.8 12.5
CFM 3063 2868
1215 BHP 0.72 0.76
Sones 15.0 14.5
CFM 3253 3066
1275 BHP 0.82 0.87
Sones 16.7 15.8
CFM 3441 3261
1335 BHP 0.93 0.98
Sones 18.7 17.4
CFM 3735 3566
1430 BHP 1.13 1.19
Sones 22 21
CFM 4035 3884
1530 BHP 1.36 1.43
Sones 24 23
CFM 4273 4136
1610 BHP 1.58 1.64
Sones 25 24
CFM 4495 4369
1685 BHP 1.79 1.86
Sones 27 26
H-
CFM / Static Pressure in inches wg
1 1.25 1.5 1.75
MAXIMUM BHP AT A GIVEN RPM = (RPM/1315)
MAXIMUM RPM = 1685
TIP SPEED (ft/min.) = RPM x 4.843
MAXIMUM MOTOR FRAME SIZE = 184T
AVERAGE DISCHARGE VELOCITY (FPM) = CFM/2.92
1933
0.53
12.4
2626 2286 1854
0.78 0.79 0.75
14.0 13.4 12.9
2853 2566 2209
0.89 0.91 0.89
15.4 14.9 14.3
3075 2839 2523 2156
1.02 1.04 1.04 1.01
17.0 16.6 16.1 15.6
3401 3206 2964 2669
1.23 1.26 1.27 1.28
19.7 19.3 18.9 18.4
3728 3574 3376 3135
1.48 1.53 1.55 1.56
22 21 20 19.8
3986 3840 3674 3485
1.70 1.76 1.79 1.81
23 23 22 21
4226 4085 3945 3768
1.93 1.99 2.04 2.07
25 26 24 23
2 2.25 2.5 2.75
3
2320
1.24
17.9
2859 2534
1.57 1.53
19.3 18.6
3233 2965 2656
1.82 1.82 1.78
21 20 19.2
3575 3325 3061 2766
2.08 2.09 2.08 2.04
22 21 21 20