Greenheck Fan manual GB-101 G-103, Maximum BHP AT a Given RPM = RPM/25933 Maximum RPM =

Roof Downblast Exhaust

Belt & Direct Drive

GB-101 • G-103

243⁄8

(619)

		*23	3⁄4	(Pa)
		(603)
				Pressure
43⁄8 (111)
				Static
	13⁄4 (44)

19

(483)

Damper Size = 12 x 12 (305 x 305) Roof Opening = 141/2 x 141/2 (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 = 54/61 lbs. (24/28 kg)

All dimensions in inches (millimeters).. *May be greater depending on motor. ^Weight shown is largest cataloged Open Drip-Proof motor.

RPM (Belt)

RPM (Direct)

RPM (Vari-Green)

HP

Density 0.075 lb/ft3

E

Density 1.2 kg/m3

V

R

U

wg)

C

M

E

(in.

T

S

Y

Pressure

S

S

I

H

T

F

T

O

1350

F

Static

E

H

E

L

T

O

T

T

L

E

C

E

S

T

O

N

O

D

Volume (cfm)

Volume (m3/hr )

Direct Drive RPM
C-860 RPM	B-1140 RPM	A-1725 RPM	VG-1725 RPM

	Motor HP					Fan
Belt		Direct				RPM
101			103		720
		VG-
				C-1/8	860
	1/4

	0	0..125
CFM	610	477
BHP	0..02	0..02
Sones	3..8	2..7
CFM	729	623
BHP	0..03	0..04
Sones	4..6	3..7
CFM	848	753

	Static Pressure in Inches wg
0..25	0..375	0..5	0..625		0..75	0..875	1	1..25
			MAXIMUM BHP AT A GIVEN RPM = (RPM/2593)3
					MAXIMUM RPM = 1800
473				TIP SPEED (ft/min) = RPM x 2.913
0..04				MAXIMUM MOTOR FRAME SIZE = 56
2..9

654 481

1/4

VG -Vari-Green is a direct drive brushless DC motor.

1000

B-1/6 1140

1245

1350

1450

1555

BHP	0..05	0..05
Sones	5..5	4..8
CFM	966	883
BHP	0..07	0..08
Sones	6..6	6..0
CFM	1055	978
BHP	0..10	0..10
Sones	7..5	7..0
CFM	1144	1073
BHP	0..12	0..13
Sones	8..5	8..1
CFM	1229	1162
BHP	0..15	0..16
Sones	9..3	9..0
CFM	1318	1255
BHP	0..19	0..19
Sones	10..2	10..0
CFM	1407	1348

0..06	0..05
4..4	3..4

805	702	507
0..09	0..09	0..08
5..7	5..2	4..1
908	824	715
0..11	0..11	0..11
6..7	6..3	5..7
1006	938	851	731
0..13	0..14	0..14	0..14
7..8	7..7	7..2	6..7
1099	1041	965	878	750
0..16	0..17	0..17	0..17	0..17
8..7	8..4	8..0	7..5	6..9
1196	1140	1079	1005	917	791
0..20	0..21	0..22	0..22	0..22	0..21
9..7	9..4	8..9	8..4	8..0	7..5
1292	1238	1187	1122	1050	963	841

1660

A-1/4 1725

1/3

1800

BHP	0..23	0..23
Sones	11..4	11..1
CFM	1462	1405
BHP	0..25	0..26
Sones	12..2	11..9
CFM	1525	1471
BHP	0..29	0..30
Sones	13..3	12..8

0..24	0..25	0..26	0..26	0..26	0..26	0..25
10..7	10..4	10..1	9..6	9..1	8..7	8..1
1351	1298	1250	1193	1126	1052	955
0..27	0..28	0..29	0..29	0..29	0..29	0..29
11..5	11..2	10..9	10..3	10..0	9..5	9..0
1419	1368	1321	1270	1209	1142	1065	793
0..30	0..31	0..33	0..33	0..33	0..33	0..33	0..30
12..5	12..4	12..2	11..4	10..9	10..6	10..2	9..3

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.

21