Carrier 50EY, 50EJ, 50EW, 50EK installation instructions Ð Air Quantity Limits

Table 14 Ð Fan Performance, 50EJ048 Ð Vertical Discharge Units

FOR EW UNITS, REDUCE NET AVAILABLE EXTERNAL STATIC PRESSURE BY 0.5 IN. WG

AIRFLOW										AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
	0.2					0.4					0.6			0.8				1.0					1.2			1.4			1.6
(Cfm)
	Rpm		Bhp	Rpm				Bhp		Rpm		Bhp		Rpm		Bhp	Rpm			Bhp		Rpm		Bhp	Rpm		Bhp	Rpm		Bhp
13,000	683	7.10		715				8.59		747		9.09		777	9.60		808			10.11		837		10.62	866		11.14	894		11.66
14,000	730	8.53		761			10.25			790		10.77		819	11.30		847			11.83		875		12.36	902		12.90	929		13.44
15,000	778	10.14		807			12.10			834		12.65		862	13.19		888			13.75		915		14.30	941		14.86	966		15.42
16,000	826	11.93		853			14.15			879		14.72		905	15.29		931			15.86		955		16.44	980		17.01	1004		17.59
17,000	875	13.90		900			16.42			925		17.01		949	17.60		973			18.19		997		18.78	1020		19.38	1043		19.98
18,000	923	16.06		947			18.90			971		19.51		994	20.12		1017			20.73		1039		21.34	1062		21.96	1084		22.58
19,000	972	18.42		995			21.61			1017		22.24		1039	22.87		1061			23.50		1083		24.13	1104		24.76	1125		25.40
20,000	1021	20.98		1042			24.55			1064		25.20		1085	25.85		1106			26.50		1126		27.15	1147		27.80	1167		28.46
AIRFLOW										AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
	1.8					2.0					2.2			2.4				2.6					2.8			3.0			3.2
(Cfm)
	Rpm		Bhp	Rpm				Bhp		Rpm		Bhp		Rpm		Bhp	Rpm			Bhp		Rpm		Bhp	Rpm		Bhp	Rpm		Bhp
13,000	921	12.18		948			12.71			975		13.24		1001	13.77		1026			14.30		1051		14.84	1076		15.39	1100		15.93
14,000	955	13.98		981			14.53			1006		15.08		1031	15.63		1056			16.18		1080		16.74	1103		17.30	1127		17.86
15,000	991	15.98		1015			16.54			1040		17.11		1063	17.68		1087			18.25		1110		18.83	1133		19.41	1155		19.99
16,000	1028	18.17		1051			18.76			1074		19.34		1097	19.93		1120			20.52		1142		21.12	1164		21.71	1185		22.31
17,000	1066	20.58		1089			21.18			1111		21.78		1133	22.39		1154			23.00		1175		23.61	1197		24.23	Ð		Ð
18,000	1106	23.19		1127			23.82			1148		24.44		1169	25.07		1190			25.69		Ð		Ð	Ð		Ð	Ð		Ð
19,000	1146	26.04		1166			26.68			1187		27.32		Ð	Ð		Ð		Ð	Ð		Ð			Ð		Ð	Ð		Ð
20,000	1187	29.11		Ð				Ð		Ð		Ð	Ð	Ð	Ð		Ð			Ð		Ð			Ð		Ð	Ð		Ð
																		LEGEND
AIRFLOW	AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
		3.4						3.6			3.6					Bhp Ð			Brake Horsepower
(Cfm)
	Rpm		Bhp		Rpm				Bhp		Rpm			Bhp		NOTES:
13,000	1124		16.48		1148				17.03		1171			17.59	1.		Fan performance is based on wet coils, economizer, roof curb,
14,000	1150		18.43		1173				19.00		1195			19.57			cabinet losses, and clean 2-in. ®lters.
15,000	1177		20.57		1199				21.16		Ð			Ð	2.		Conversion − Bhp to watts:
16,000	Ð		Ð		Ð				Ð	Ð	Ð										Bhp x 746
17,000	Ð		Ð		Ð				Ð	Ð	Ð						Watts =
																					Motor efficiency
18,000	Ð		Ð		Ð				Ð	Ð	Ð
19,000	Ð		Ð		Ð				Ð	Ð	Ð					3. VAV units will operate down to 70 cfm/ton.
20,000	Ð		Ð		Ð				Ð	Ð	Ð

Table 15 Ð Air Quantity Limits

UNIT	MINIMUM HEATING	MINIMUM COOLING	MINIMUM COOLING	MAXIMUM
50EJ,EK,EW,EY	CFM	CFM (VAV)	CFM (CV)	CFM
024	6,000	2000	6,000	10,000
028	7,500	2500	7,500	12,500
030	8,250	2750	8,250	13,750
034	9,000	3000	9,000	15,000
038	10,500	3500	10,500	17,500
044	12,000	4000	12,000	20,000
048	13,500	4500	13,500	22,500

LEGEND

CV Ð Constant Volume

VAV Ð Variable Air Volume

38