Bryant 581B manual PERFORMANCE DATA cont, FAN PERFORMANCE — VERTICAL DISCHARGE UNITS cont

PERFORMANCE DATA (cont)

FAN PERFORMANCE — VERTICAL 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	596		0.20		665		0.25		722		0.31	779	0.36		872		0.48	915	0.54	957		0.60
1300	633		0.24		699		0.30		754		0.36	809	0.42		902		0.55	943	0.61	984		0.67
1400	672		0.30		735		0.36		788		0.42	840	0.48		933		0.62	972	0.69	1011		0.75
1500	711		0.35		770		0.42		822		0.49	873	0.55		963		0.69	1002	0.77	1041		0.84
1600	751		0.42		835		0.49		871		0.56	907	0.63		993		0.77	1033	0.85	1072		0.93
1700	791		0.49		873		0.57		907		0.65	941	0.72		1024		0.87	1064	0.96	1103		1.04
1800	831		0.58		881		0.66		929		0.74	976	0.81		1057		0.97	1095	1.06	1132		1.14
1900	872		0.67		919		0.75		965		0.84	1011	0.92		1091		1.08	1127	1.17	1162		1.25
2000	913		0.77		958		0.86		1002		0.95	1046	1.03							1195		1.38
															1125		1.21	1160	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	993		0.65		1028		0.69		1056		0.72	1083	0.74		1134		0.80	1185	0.88	1231		0.99
1300	1021		0.74		1058		0.80		1090		0.85	1121	0.89		1171		0.94	1219	1.00	1268		1.10
1400	1049		0.82		1086		0.89		1120		0.96	1153	1.00		1210		1.12	1257	1.17	1307		1.25
1500	1077		0.92		1113		0.99		1147		1.06	1180	1.13							1339		1.43
															1241		1.27	1295	1.37
1600	1107		1.00		1141		1.09		1174		1.17				1269		1.40	1326	1.54	1376		1.65
												1207	1.25
1700	1137		1.12		1171		1.20		1203		1.29	1235	1.37		1296		1.53	1354	1.70	1407		1.84
1800									1233		1.41	1263	1.49		1323		1.67	1381	1.85	1436		2.02
	1167		1.23		1202		1.32
1900	1197		1.35		1232		1.45		1263		1.54	1294	1.63		1351		1.81	1408	2.00	1463		2.19
2000	1229		1.48		1262		1.58		1294		1.68	1325	1.78		1362		1.97	1436	2.16	1489		2.36
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		665				0.25		779		0.36		872		0.48		957		0.60	1028		0.69
1300		699				0.30		809		0.42		902		0.55		984		0.67	1058		0.80
1400		735				0.36		840		0.48		933		0.62		1011		0.75	1086		0.89
1500		770				0.42		873		0.55		963		0.69		1041		0.84	1113		0.99
1600		835				0.49		907		0.63		993		0.77		1072		0.93	1141		1.09
1700		873				0.57		941		0.72		1024		0.87		1103		1.04	1171		1.20
1800		881				0.66		976		0.81		1057		0.97		1132		1.14	1202		1.32
1900		919				0.75		1011		0.92		1091		1.08		1162		1.25	1232		1.45
2000		958				0.86		1046		1.03		1125		1.21		1195		1.38	1262		1.58
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		1083				0.74		1134		0.80		1185		0.88		1331		0.99	1374		1.09
1300		1121				0.89		1171		0.94		1219		1.00		1268		1.10	1309		1.21
1400		1153				1.00		1210		1.12		1257		1.17		1307		1.25	1349		1.37
1500		1180				1.13		1241		1.27		1295		1.37		1339		1.43	1382		1.57
1600		1207				1.25		1269		1.40		1326		1.54		1376		1.65	1420		1.81
1700		1235				1.37		1296		1.53		1354		1.70		1407		1.84	1452		2.02
1800		1263				1.49		1323		1.67		1381		1.85		1436		2.02	1482		2.22
1900		1294				1.63		1351		1.81		1408		2.00		1463		2.19	—			—
2000		1325				1.78		1362		1.97		1436		2.16		1489		2.36	—			—

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 motor; 1075 to 1455 rpm for high-static motor. 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 1.2 for standard motor, 2.4 for high-static motor. 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 representative to verify.

7.Interpolation is permissible. Do not extrapolate.

27