Bryant 581B manual FAN Performance Horizontal Discharge Units

PERFORMANCE DATA (cont)

FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont)

581B048 (4 TONS) — STANDARD MOTOR

AIRFLOW									EXTERNAL STATIC PRESSURE (in. wg)
		0.1			0.2			0.3		0.4					0.6			0.7					0.8
(Cfm)
	Rpm		Bhp		Rpm	Bhp	Rpm		Bhp	Rpm		Bhp		Rpm		Bhp			Rpm	Bhp		Rpm		Bhp
1200	569		0.18		641	0.23	701		0.29	761	0.34			859		0.46		901		0.52		943		0.58
1300	604		0.22		673	0.28	731		0.34	788	0.39			887		0.52		928		0.59		968		0.65
1400	640		0.27		705	0.33	761		0.39	817	0.45			914		0.59		955		0.66		996		0.72
1500	676		0.32		738	0.38	793		0.45	847	0.51			940		0.65		982		0.73		1024		0.81
1600	713		0.38		772	0.44	825		0.51	877	0.58			967		0.73		1009		0.81		1051		0.89
1700	750		0.45		806	0.51	857		0.59	908	0.66			997		0.81		1037		0.90		1077		1.01
1800	788		0.52		841	0.59	890		0.67	939	0.75			1026		0.91		1065		1.01		1104		1.07
1900	826		0.60		876	0.68	924		0.76	971	0.84			1056		1.01		1094		1.10		1132		1.18
2000	864		0.70		912	0.77	958		0.86	1004	0.94			1087		1.12		1125		1.21		1162		1.30
581B048 (4 TONS) — STANDARD MOTOR (cont)
AIRFLOW									EXTERNAL STATIC PRESSURE (in. wg)
		0.9			1.0			1.1		1.2					1.4			1.6					1.8
(Cfm)
	Rpm		Bhp		Rpm	Bhp	Rpm		Bhp	Rpm		Bhp		Rpm		Bhp			Rpm	Bhp		Rpm		Bhp
1200	987		0.64		1030	0.70	1068		0.79	1106	0.87			1134		0.98		1189		1.12		1245		1.21
1300	1006		0.71		1044	0.77	1086		0.84	1128	0.91			1183		1.10						1297		1.35
																		1226		1.23
1400	1033		0.79		1069	0.86	1104		0.93	1139	1.01			1218		1.14		1286		1.34		1320		1.48
1500	1060		0.88		1095	0.95	1129		1.02	1162	1.09			1228		1.24		1303		1.40		1343		1.60
1600	1087		1.01		1123	1.05	1156		1.13	1185	1.20			1250		1.35		1319		1.51		1382		1.68
1700	1114		1.07		1151	1.15	1183		1.23	1215	1.31			1276		1.48		1334		1.64		1398		1.80
1800	1141		1.17		1178	1.26	1211		1.35	1243	1.43			1303		1.61		1359		1.78		1418		1.95
1900					1204	1.37	1238		1.47	1271	1.56			1330		1.74		1386		1.93		1439		2.11
	1168		1.28
2000	1197		1.39		1231	1.48	1265		1.59	1298	1.69			1358		1.89		1413		2.08		1466		2.27
581B048 (4 TONS) — HIGH-STATIC MOTOR
AIRFLOW									EXTERNAL STATIC PRESSURE (in. wg)
				0.2			0.4				0.6						0.8				1.0
(Cfm)
			Rpm		Bhp	Rpm			Bhp	Rpm			Bhp			Rpm			Bhp		Rpm			Bhp
1200		641			0.23	761		0.34		859			0.46		943				0.58		1030		0.70
1300		673			0.28	788		0.39		887			0.52		968				0.65		1044		0.77
1400		705			0.33	817		0.45		914			0.59		996				0.72		1069		0.86
1500		738			0.38	847		0.51		940			0.65		1024				0.81		1095		0.95
1600		772			0.44	877		0.58		967			0.73		1051				0.89		1123		1.05
1700		806			0.51	908		0.66		997			0.81		1077				1.01		1151		1.15
1800		841			0.59	939		0.75		1026			0.91		1104				1.07		1178		1.26
1900		876			0.68	971		0.84		1056			1.01		1132				1.18		1204		1.37
2000		912			0.77	1004		0.94		1087			1.12		1162				1.30		1231		1.48
581B048 (4 TONS) — HIGH-STATIC MOTOR (cont)
AIRFLOW									EXTERNAL STATIC PRESSURE (in. wg)
				1.2			1.4			1.6							1.8				2.0
(Cfm)
			Rpm		Bhp	Rpm			Bhp	Rpm			Bhp		Rpm				Bhp		Rpm			Bhp
1200		1106			0.87	1134		0.98		1189		1.12			1245			1.21			1292		1.35
1300		1128			0.91	1183		1.10		1226		1.23			1297			1.35			1346		1.51
1400		1139			1.01	1218		1.14		1286		1.34			1320			1.48			1370		1.65
1500		1162			1.09	1228		1.24		1303		1.40			1343			1.60			1393		1.79
1600		1185			1.20	1250		1.35		1319		1.51			1382			1.68			1434		1.88
1700		1215			1.31	1276		1.48		1334		1.64			1398			1.80			1451		2.01
1800		1243			1.43	1303		1.61		1359		1.78			1418			1.95			1471		2.18
1900		1271			1.56	1330		1.74		1386		1.93			1439			2.11			1493		2.36
2000		1298			1.69	1358		1.89		1413		2.08			1466			2.27
																					1521		2.54

LEGEND

Bhp — Brake Horsepower Input to Fan

FIOP — Factory-Installed Option

NOTES:

1.Boldface indicates field-supplied drive required. (See Note 3.)

2. indicates field-supplied motor and drive required.

3.Motor drive range is 840 to 1185 rpm for standard units; 1075 to 1455 rpm for high-static motors. All other rpms require a field-supplied drive.

4.Values include losses for filters, unit casing, and wet coils. See page 40 for accessory/FIOP static pressure information.

5.Maximum continuous bhp is 1.20 for standard motors; 2.40 for high-static motors. Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence. Using your fan motors up to the ratings shown will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected. See Evaporator-Fan Motor Data tables on pages 41 and 42 for additional information.

6.Use of a field-supplied motor may affect wire sizing. Contact your Bryant rep- resentative to verify.

7.Interpolation is permissible. Do not extrapolate.

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