Greenheck Fan Centrifugal Roof Downblast Exhaust Fans GB User Manual
Page 18
0
100
200
300
400
500
600
0
50
100
150
200
250
300
0
50
100
150
200
250
300
350
400
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
097-C
097-B
1/8 HP
1/4 HP
1/6 HP
1725
1435
1140
860
720
Static Pr
essur
e (in. wg)
Volume (cfm)
097-A
Volume (m
3
/hr)
Static Pr
essur
e (Pa)
RPM
(Belt)
RPM
(Direct)
RPM
(Vari-Green)
HP
Density 0.075 lb/ft
3
Density 1.2 kg/m
3
18
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.
Motor HP
Fan
RPM
Static Pressure in Inches wg
Belt
Direct
0
0.125
0.25
0.375
0.5
0.625
0.75
0.875
1
1.125
071
097
1/6
or
1/8
VG-
1/4
720
CFM
157
107
BHP
0.01
0.01
Sones
1.8
2.0
790
CFM
172
128
70
BHP
0.01
0.01
0.01
Sones
2.3
2.3
2.2
C-1/8
860
CFM
187
148
101
BHP
0.02
0.02
0.02
Sones
2.8
2.7
2.7
930
CFM
203
166
124
BHP
0.02
0.02
0.02
Sones
3.3
3.4
3.2
1000
CFM
218
184
146
100
BHP
0.03
0.03
0.03
0.02
Sones
3.9
4.0
3.9
3.6
1070
CFM
233
202
167
130
BHP
0.03
0.03
0.03
0.03
Sones
4.6
4.7
4.5
4.2
B-1/6
1140
CFM
248
220
187
152
109
BHP
0.04
0.04
0.04
0.04
0.03
Sones
5.3
5.4
5.1
4.9
4.7
1285
CFM
280
255
228
197
166
127
BHP
0.06
0.06
0.06
0.05
0.05
0.05
Sones
6.8
6.7
6.6
6.3
6.0
5.9
1435
CFM
313
292
265
240
212
185
151
BHP
0.08
0.08
0.08
0.08
0.08
0.07
0.07
Sones
8.0
8.0
7.9
7.6
7.3
7.1
6.9
1580
CFM
344
324
302
281
255
230
205
177
140
BHP
0.10
0.10
0.10
0.10
0.10
0.10
0.10
0.09
0.09
Sones
9.5
9.5
9.4
9.1
8.8
8.5
8.3
8.1
7.9
A-1/4
1725
CFM
376
356
339
316
297
273
250
227
205
171
BHP
0.13
0.13
0.13
0.13
0.13
0.13
0.13
0.13
0.12
0.12
Sones
11.3
11.2
11.2
10.8
10.5
10.2
9.9
9.7
9.5
9.3
C-860
-
RPM
B-1140
-
RPM
A-1725
-
RPM
VG-1725
-
RPM
Roof Downblast Exhaust
Belt & Direct Drive
GB-071 • G-097
Damper Size = 12 x 12
(305 x 305)
Roof Opening = 14½ x 14½
(368 x 368)
Shroud Thickness = 0.051
(1.3)
Motor Cover Thickness = 0.040
(1.0)
Curb Cap Thickness = 0.064
(1.6)
^Approximate Unit Weight G/GB = 54/60 lbs.
(24/27 kg)
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
MAXIMUM BHP AT A GIVEN RPM = (RPM/3371)
3
MAXIMUM RPM - GB-071=1710, G-097=1725
TIP SPEED (ft/min) = RPM x 2.929
MAXIMUM MOTOR FRAME SIZE = 56
1
3
⁄
4
(44)
24
3
⁄
8
(619)
4
3
⁄
8
(111)
*23
3
⁄
4
(603)
19
(483)
Direct Drive RPM