Greenheck G Manual page 15

Centrifugal roof downblast exhaust fans
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Roof Downblast - Exhaust
Direct Drive
G-070 • G-075
19
3
8
(492)
17
(432)
Damper Size = 8 x 8
(203 x 203)
Roof Opening = 10½ x 10½
(267 x 267)
Shroud Thickness = 0.064
(1.6)
Motor Cover Thickness = 0.040
Curb Cap Thickness = 0.064
(1.6)
^Approximate Unit Weight = 15 lbs.
All dimensions in inches (millimeters). *May be greater depending on motor.
^Weight shown is largest cataloged Open Drip-Proof motor.
Motor
Fan
Direct
HP
RPM
Drive
070
CFM
VG-
E-1/100 1050
BHP
1/6
Sones
CFM
G-1/60
1300
BHP
Sones
CFM
D-1/30
1550
BHP
Sones
CFM
1725
BHP
Sones
075
CFM
VG-
E-1/80
1050
BHP
1/6
Sones
CFM
G-1/50
1300
BHP
Sones
CFM
D-1/25
1550
BHP
Sones
CFM
1725
BHP
Sones
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.
140
120
100
*12
1
8
(308)
80
60
3
(76)
40
1
3
(44)
4
20
0
(1.0)
(7 kg)
0
0.05
0.1
253
226
195
0.01
0.01
0.01
2.7
2.1
1.7
314
292
269
0.01
0.01
0.02
4.1
3.7
3.4
374
356
337
0.02
0.02
0.02
5.6
5.4
5.2
416
400
383
0.03
0.03
0.03
6.8
6.7
6.7
297
260
222
0.01
0.01
0.01
3.6
3.1
2.9
367
338
309
0.02
0.02
0.02
4.1
3.9
3.7
438
413
389
0.03
0.03
0.03
6.1
5.8
5.6
487
465
443
0.05
0.05
0.05
8.0
7.5
7.2
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0
90
180
0
200
Direct Drive RPM
E-1050-
RPM
Static Pressure in Inches wg
0.125
0.15
0.2
179
152
0.01
0.01
1.5
1.2
257
244
214
0.02
0.02
0.02
3.3
3.2
2.9
327
317
297
0.03
0.03
0.03
5.1
5.1
4.9
375
366
348
0.03
0.03
0.04
6.6
6.6
6.5
200
176
0.01
0.01
2.8
2.6
293
277
241
0.02
0.02
0.02
3.7
3.7
3.6
377
364
337
0.04
0.04
0.04
5.4
5.3
5.1
432
421
399
0.05
0.05
0.05
7.1
6.8
6.5
RPM (Direct)
RPM (Vari-Green)
Density 0.075 lb/ft
3
Density 1.2 kg/m
270
360
450
Volume (cfm)
400
600
800
3
Volume (m
/hr)
G-1300-
D-1550-
RPM
0.25
0.3
0.375
171
0.02
2.6
274
244
190
0.03
0.03
0.03
4.7
4.5
4.1
329
309
270
0.04
0.04
0.04
6.3
6.2
5.9
195
0.02
3.5
309
277
214
0.04
0.04
0.03
4.9
4.9
4.8
374
349
306
0.05
0.05
0.05
6.2
6.1
6.0
3
540
RPM
0.4
253
0.04
5.7
292
0.05
6.0
15

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