Greenheck G Manual page 26

Roof Downblast - Exhaust Roof Downblast - Belt Drive
Belt & Direct Drive Size- : GB • H-GB
GB-141HP • G-143HP
28 3 ⁄
8
(721)
22
(559)
Damper Size = 16 x 16
Roof Opening = 18½ x 18½
Shroud Thickness = 0.051
Motor Cover Thickness = 0.040
Curb Cap Thickness = 0.064
^Approximate Unit Weight G/GB = 75/83 lbs.
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
Motor HP
Belt Direct RPM
141HP 143HP
VG-
B-1/4
3/4
1/4
1/3
A-1/2
1/2
3/4
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.
26
3 ⁄
*23
4
(603)
4
(102)
1 3 ⁄
(44)
4
(470 x 470)
(1.3)
(1.0)
(1.6)
(34/38 kg)
Fan
.5 .75
488
CFM
1020 0.08
BHP
6.3
Sones
645 413
CFM
1140 BHP 0.11 0.11
Sones 7.7 7.6
CFM 837 700
1320 BHP 0.17 0.18
Sones 10.3 9.8
1009 903
CFM
1500 0.24 0.26
BHP
13.1 12.3
Sones
1151 1064
CFM
1655 0.32 0.34
BHP
15.0 14.1
Sones
CFM 1213 1132
1725 BHP 0.36 0.38
Sones 16.2 15.4
CFM 1289 1213
1812 BHP 0.41 0.43
17.8 17.2
Sones
1366 1294
CFM
1900 0.47 0.49
BHP
19.0 18.4
Sones
1495 1430
CFM
0.58 0.61
2050 BHP
21.0 20.0
Sones
CFM 1598 1536
2170
BHP 0.68 0.71
Sones 22.0 22.0
1623 1562
CFM
2200 BHP 0.71 0.74
Sones 23.0 22.0
Direct Drive RPM
B-1140-
RPM
Static Pressure in Inches wg
1 1.25 1.5 1.75
MAXIMUM BHP AT A GIVEN RPM = (RPM/2351)
MAXIMUM RPM - GB-141HP=2200, G-143HP=2200
TIP SPEED (ft/min) = RPM x 3.829
MAXIMUM MOTOR FRAME SIZE = 145T
486
0.17
9.9
774 592
0.26 0.25
12.2 12.4
959 833 668
0.35 0.35 0.34
13.3 13.1 13.6
1035 932 784 588
0.39 0.39 0.39 0.37
14.7 14.2 14.3 14.9
1127 1030 911 763
0.45 0.46 0.45 0.45
16.6 15.8 15.6 15.9
1218 1127 1033 901
0.51 0.53 0.53 0.52
18.0 17.4 16.8 16.7
1361 1285 1200 1113
0.63 0.65 0.66 0.66
19.8 19.3 18.8 18.6
1472 1407 1328 1248
0.73 0.76 0.77 0.78
21.0 21.0 21.0 21.0
1500 1436 1360 1281
0.76 0.78 0.80 0.82
22.0 22.0 21.0 21.0
RPM (Belt)
RPM (Direct)
RPM (Vari-Green)
HP
Density 0.075 lb/ft
Density 1.2 kg/m
Volume (cfm)
3
Volume (m /hr )
A-1725- VG-2200-
RPM
2 2.25 2.5
545
0.41
16.6
753
0.51
17.0
991 857 672
0.66 0.65 0.61
18.3 18.3 18.6
1163 1045 919
0.79 0.78 0.77
21.0 20.0 19.7
1200 1088 968
0.82 0.81 0.80
21.0 21.0 20.0
3
3
RPM
2.75
3
757
0.74
19.8
834
0.79
20.0