Greenheck Fan manual Roof Downblast BeltExhaustDrive SizeBelt-Drive GB H-GB, GB-161HP

Roof Downblast - BeltExhaustDrive

SizeBelt-Drive: GB • H-GB

GB-161HP

283⁄8

(721)

22

(559)

*233⁄4

(603)

4(102)

13⁄4 (44)

Static Pressure (Pa)

										RPM (Belt)
										HP
										Density 0.075 lb/ft3
										Density 1.2 kg/m3
										E
										V
										R
										U
										C
wg)										M
										E
										T
(in.										S
										Y
										S
Pressure										S
										I
										H
										T
										F
										O
										T
										F
										E
Static										L
										E
										H
										T
										O
									T	T
							L	E	C
						E
					S
				T
			O
		N
	O
	D

Damper Size = 16 x 16 (406 x 406) Roof Opening = 181/2 x 181/2 (470 x 470) Shroud Thickness = 0.051 (1.3) Motor Cover Thickness = 0.040 (1.0) Curb Cap Thickness = 0.064 (1.6) ^Approximate Unit Weight = 88 lbs. (40 kg)

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

Volume (cfm)

Volume (m3/hr)

Motor	Fan					Static Pressure in Inches wg
HP	RPM		0..5	0..625	0..75	1	1..25	1..5	1..75		2	2..25	2..5
161HP
	825	CFM	702
		BHP	0..11					MAXIMUM BHP AT A GIVEN RPM = (RPM/1708)3
		Sones	6..5							MAXIMUM RPM = 1740
		CFM	1093	919	585				TIP SPEED (ft/min) = RPM x 4.352
1/4	960	BHP	0..18	0..17	0..15			MAXIMUM MOTOR FRAME SIZE = 145T
		Sones	7..7	7..6	8..0
		CFM	1380	1271	1139	589
	1095	BHP	0..26	0..26	0..26	0..21
		Sones	9..0	9..0	8..9	9..5
		CFM	1606	1514	1416	1149
1/3	1210	BHP	0..34	0..35	0..35	0..34
		Sones	10..6	10..3	10..4	10..3
		CFM	1718	1636	1545	1333	949
	1270	BHP	0..39	0..40	0..40	0..41	0..37
		Sones	11..4	11..2	11..1	11..1	11..4
		CFM	1829	1753	1668	1483	1204
1/2	1330	BHP	0..44	0..45	0..46	0..47	0..45
		Sones	12..3	12..1	11..9	12..1	12..0
		CFM	1938	1865	1789	1619	1399	1032
	1390	BHP	0..50	0..51	0..52	0..53	0..53	0..48
		Sones	13..3	13..0	12..8	12..7	12..7	13..1
		CFM	2109	2041	1973	1822	1654	1416		1012
	1485	BHP	0..60	0..61	0..63	0..64	0..65	0..63		0..57
3/4		Sones	14..9	14..7	14..4	13..8	13..7	14..0		14..7
		CFM	2275	2214	2150	2016	1868	1704		1447	1034
	1580	BHP	0..72	0..73	0..75	0..77	0..77	0..791		0..75	0..67
		Sones	16..7	16..7	16..4	15..5	14..7	14..8		15..4	16..6
		CFM	2414	2357	2297	2175	2037	1887		1702	1441	996
	1660	BHP	0..82	0..84	0..85	0..89	0..89	0..91		0..90	0..86	0..75
1		Sones	18..3	18..8	18..3	16..7	16..2	15..8		15..8	17..1	20
		CFM	2551	2497	2442	2325	2200	2066		1917	1714	1452	987
	1740	BHP	0..94	0..96	0..97	1..01	1..03	1..03		1..05	1..03	0..98	0..85
		Sones	20	21	21	18..4	17..5	17..2		16..8	17..2	19..2	28

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.

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