Greenheck G Manual page 20

Roof Downblast Exhaust
Belt & Direct Drive
GB-091 • G-099
24 3 ⁄
8
(619)
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 = 54/61 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
091 099
VG-
1/4
C-1/8
1/4
B-1/6
A-1/4
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.
20
3 ⁄
*23
4
(603)
4 3 ⁄
(111)
8
1 3 ⁄
(44)
4
(368 x 368)
(1.3)
(1.0)
(1.6)
(24/28 kg)
Fan
RPM 0 0.125
546 403
CFM
720 0.02 0.02
BHP
3.6 3.5
Sones
599 471
CFM
790 BHP 0.02 0.02
Sones 4.2 4.1
CFM 652 536
860 BHP 0.03 0.03
Sones 4.9 4.7
705 598
CFM
930 0.04 0.04
BHP
5.6 5.5
Sones
758 659
CFM
1000 0.04 0.05
BHP
6.4 6.2
Sones
CFM 811 718
1070 BHP 0.05 0.06
Sones 7.3 7.1
CFM 864 777
1140 BHP 0.07 0.07
8.3 8.1
Sones
974 897
CFM
1285 0.09 0.10
BHP
9.5 9.4
Sones
1087 1018
CFM
1435 0.13 0.14
BHP
10.7 10.6
Sones
CFM 1197 1135
1580 BHP 0.17 0.18
Sones 12.1 12.0
CFM 1307 1250
1725 BHP 0.23 0.23
Sones 13.6 13.5
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/2703)
MAXIMUM RPM - GB-091=1710, G-099=1725
291
MAXIMUM MOTOR FRAME SIZE = 56
0.02
3.9
400
0.03
4.5
481
0.04
5.1
552 414
0.05 0.05
5.8 5.6
621 512
0.06 0.06
6.7 6.3
687 590 457
0.07 0.07 0.07
7.6 7.1 6.8
819 736 647 526
0.10 0.10 0.11 0.10
9.0 8.5 8.2 7.9
949 877 801 721
0.14 0.14 0.15 0.15
10.4 10.0 9.6 9.3
1072 1009 941 872
0.19 0.19 0.19 0.20
11.9 11.5 11.2 10.9
1192 1135 1076 1013
0.24 0.24 0.25 0.25
13.4 13.2 12.9 12.6
RPM (Belt)
RPM (Direct)
RPM (Vari-Green)
HP
Density 0.075 lb/ft
Density 1.2 kg/m
3
A-1725- VG-1725-
RPM RPM
0.75 0.875 1
TIP SPEED (ft/min) = RPM x 2.929
615 404
0.15 0.12
9.0 8.4
799 707 583
0.20 0.20 0.19
10.6 10.3 9.8
949 883 806
0.26 0.26 0.26
12.3 12.0 11.8
3
3
RPM
1.125
3
707
0.25
11.5