Greenheck G Manual page 24

Roof Downblast - Exhaust
Belt & Direct Drive
GB-131 • G-133
28 3 ⁄
8
(721)
19
(483)
Damper Size = 12 x 12
(305 x 305)
Roof Opening = 14½ x 14½
Shroud Thickness = 0.051
Motor Cover Thickness = 0.040
Curb Cap Thickness = 0.064
^Approximate Unit Weight G/GB = 62/67 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
131 133
VG-
3/4
C-1/8
1/4
B-1/6
1/3
1/2
3/4 A-1/2
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.
24
3 ⁄
*23
4
(603)
4
(102)
1 3 ⁄
(44)
4
(368 x 368)
(1.3)
(1.0)
(1.6)
(28/30 kg)
Fan
RPM
0 0.125
CFM 823 626
580 BHP 0.02 0.02
Sones 4.5 4.5
CFM 1022 879
720 0.04 0.04
BHP
5.4 5.4
Sones
1221 1106
CFM
860 0.06 0.07
BHP
6.6 6.5
Sones
1419 1323
CFM
1000 BHP 0.10 0.11
Sones 8.1 8.0
CFM 1618 1535
1140 BHP 0.15 0.16
Sones 10.0 9.8
1774 1698
CFM
1250 0.19 0.2
BHP
12.0 11.7
Sones
1866 1794
CFM
1315 0.22 0.23
BHP
13.2 12.8
Sones
CFM 2044 1978
1440 BHP 0.29 0.31
15.0 15.0
Sones
2271 2212
CFM
1600 BHP 0.40 0.42
Sones 16.2 16.0
2391 2335
CFM
1685 0.47 0.48
BHP
16.9 16.6
Sones
2448 2393
CFM
1725 0.50 0.52
BHP
17.4 17.0
Sones
Volume (cfm)
Volume (m /hr )
Direct Drive RPM
C-860- B-1140-
RPM
Static Pressure in Inches wg
0.25 0.375 0.5 0.625
MAXIMUM BHP AT A GIVEN RPM = (RPM/2047)
MAXIMUM RPM - GB-131=1725, G-133=1725
650
MAXIMUM MOTOR FRAME SIZE = 56
0.04
5.2
962 727
0.07 0.07
6.3 6.0
1213 1075 867
0.11 0.12 0.11
7.7 7.4 7.0
1444 1340 1211 1031
0.16 0.17 0.17 0.17
9.6 9.2 8.8 8.5
1617 1528 1426 1133
0.21 0.22 0.23 0.22
11.3 11.0 10.5 9.7
1718 1637 1545 1435
0.24 0.25 0.26 0.26
12.5 12.1 11.7 11.2
1911 1838 1759 1674
0.32 0.33 0.34 0.34
15.1 15.1 14.5 13.9
2152 2088 2023 1873
0.43 0.44 0.45 0.47
15.8 15.6 15.3 14.6
2279 2219 2158 2093
0.50 0.51 0.52 0.54
16.3 16.0 15.7 15.1
2338 2281 2220 2159
0.53 0.55 0.56 0.57
16.7 16.3 15.9 15.6
RPM (Belt)
RPM (Direct)
A
RPM (Vari-Green)
HP
Density 0.075 lb/ft
Density 1.2 kg/m
3
A-1725- VG-1725-
RPM RPM
0.75 1 1.25
TIP SPEED (ft/min) = RPM x 3.436
1305
0.26
10.9
1571 1299
0.35 0.34
13.4 12.5
1783 1686 1425
0.47 0.48 0.47
14.2 13.9 13.2
2020 1857 1654
0.55 0.56 0.56
14.8 14.5 13.9
2089 1935 1746
0.58 0.59 0.60
15.4 14.9 14.3
3
3
RPM
1.5
3
1312
0.52
13.5
1474
0.58
13.8