Greenheck Fan QEM QEP Class Maximum rpm 780, 903, 63.4 1028 72.6 1072, 2460 681, 3116 829, 119

Plenum Size 49

QEP Class I	Maximum rpm	780
QEP Class II	Maximum rpm 1017
QEP Class III	Maximum rpm 1281
QEP Motor on Frame Limit	326T
Minimum Motor Size	3	[hp]
Wheel Diameter	49.00	[in.]
	1245	[mm]
Peak Power	(rpm / 245)3	[hp]
	(rpm / 270)3	[kW]
Wheel Outlet Velocity	cfm / 18.4	[ft/min]
	m3/s / 10.9	[m/s]
Tip Speed	rpm x 12.8	[ft/min]
	rpm x 0.0652	[m/s]
% Wide Open Volume (%WOV)	cfm / (rpm x 0.740)	[%]
	m3/hr / (rpm x 1.257)	[%]

Imperial data — Metric data

Static Pressure (Pa x 100)

30

25

20

15

10

5

0

	14											125																			rpm
																											150				hp
		60	75		100																					E
																															% WOV
																										V				Density 0.075 lb/ft3
	12																									R
																										C				Density 1.2 kg/m3
		50																							M	U		60%
																								E
																								T
		40																						S
	10																							Y
wg)																					T		S	S					70%
																						I
																				F		H							1281
(in.	8	30																T	O
																	F
Pressure		25													L	E												1137
									C	T				E													1017
													H
												T																		80%
		20
	6										T	O
		15							E
Static									L																903
	4					N	O	T	S																						90%
		10
																					780
				D	O
		7½
														665
	2	5							528
			419
	0																													8
	0	1	2						3												4						5	6	7		9	10

Volume (cfm x 10,000)

0 2 4 6 8 10 12 14 16

Volume (m3/hr x 10,000)

								STATIC PRESSURE (in. wg)
CFM	OV	1			2	3			4		5		6		7		8			9
		RPM #)1		RPM #)1		RPM #)1		RPM #)1		RPM #)1		RPM #)1			RPM #)1		RPM #)1		RPM #)1
36000	1968	 10.2		648 16.7		714 23.9		 31.2		832 38.8		887 46.7
39000	2132	609	11.7	680	18.7	743	26.2	801	34.1	 42.1		909			 		1007 67.9
42000	2296	 		713 20.9		773 28.8		829 37.2		882 		932			980	63.4	1028	72.6	1072	82.1
	2460	681		746 23.4		803 31.6		 40.3		908					1004	67.9	1049	77.6	1093	87.4
48000	2624	717	17.6	779	26.0	 34.6		888 43.7		937		984		63.1	1029	72.8	1072	82.8	1114	93.1
	2788	 20.0		814 28.9		868 37.9		918	47.4	966		1011		67.6		78.0	1098	88.3	1138	99.0
		791	22.6	848	31.9	901		949		996	61.6	1040		72.3	1082	83.4	1124	94.2	1164	
	3116	829		884		934		982		1026 66.2		1069 77.2			1110	88.7	 100		1189 112
60000	3280	866	28.6	919	38.9	968		1014 60.1		 71.1		1099 			1139	94.3	1178	106		119
63000	3444	904	32.0		42.8	1003 		1047 		1090 76.4		1129 88.1			1170	100	1207	113	1244	126
66000	3608	942		992	47.0	1038 		1081 70.2		1122 81.9		1161 94.0			1199	107	1236	119	1272	133
69000	3772	980	39.8	1028		1073 		 		 87.9		1193 100			1230	113	1267	126

RPM	807		Inlet Sound Power, L8J <E# SFG -12						XBUUT>
		1	2	3	4		6	7		8	L8JA
	100		83	73	71	68	61				74
	80	82	79	69	64	60				48	69
	60	82	78	67	62					47	67
		79	76	67	62					48	66
	100	91	93	82	78	77	72	67		61	83
	80	88	89	77	72	69		61			77
	60	86	88		69	66	62				
		87	89	76	69	66	63	61			76
700	100	92	99		87		81	77		73	92
	80	91	99	93	83	78	74	71		68	88
	60	90	94	88	79	74	71	69		67	84
		92	96	89	79	74	71	69		68	
1000	100	97	101	102	97		91	87		83	100
	80	93	98	100	93	89	84	79		77	96
	60	91		97	90		79	78		77	93
		92	99	100	89	84	80	79		78	94
1281	100	102	106	109	104	101	97	94		90	107
	80	98	102	107	100	96	91	86		83	103
	60		100	104	98	92	87	84		82	100
		96	103	108	99	91	87	84		83	102

RPM	807		Outlet Sound Power, L8P <E# SFG -12						XBUUT>
		1	2	3	4		6	7		8	L8PA
	100	83	84	80	79		69	62			80
	80	82	81	76		70					76
	60	80	78	74	74	68	62				74
		79	77	74	74	68	61				74
	100	87	92	87		82	78	73		66	88
	80	87	91	84	82	78	73	69		63	84
	60	87	89	84	81	77	71	67		63	83
		92	92	88		80	73	68		63	86
700	100	90	98	99	94	90	87	83		78	97
	80	88	97	96	91	86	82	79		74	93
	60	90		94	89	84	80	76		71	91
		94	96	94	90		80	76		71	92
1000	100	97	102	107	104	100		92		89	106
	80		100	104	101	96	90	86		83	102
	60	97	100	102	97	92	87	84		80	99
		99	103	103	97	92	87	83		79	99
1281	100	102	107	111	111	107	102	98		96	112
	80	100	104	108	107	103	97	93		90	108
	60	102		108	104	99		90		87	106
		103	108	111		99	94	90		86	107

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the effects of appurtenances (accessories).

The sound power level ratings shown are in decibels, referred to 10-12XBUUT
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-8J, L8JA and outlet L8P, L8PA sound power levels for installation type A: Free inlet, Free outlet. The A-weighted sound ratings shown have been calculated per AMCA International Standard 301. Outlet ratings do not include the effects of duct end correction.

27