Bryant 581A/B manual 581B048 4 Tons Standard Motor Belt Drive

581B036-150

PERFORMANCE DATA (cont)

FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont)

581B048 (4 TONS) — STANDARD MOTOR (BELT DRIVE)*
Airflow							External Static Pressure (in. wg)
			0.2			0.4			0.6			0.8			1.0
(Cfm)
		Rpm	Bhp	Watts	Rpm	Bhp	Watts	Rpm	Bhp	Watts	Rpm	Bhp	Watts	Rpm	Bhp	Watts
1200		666	0.26	257	778	0.37	367	871	0.47	471	952	0.57	572	1025	0.67	670
1300		701	0.31	306	810	0.43	426	901	0.54	540	981	0.65	651	1053	0.76	760
1400		737	0.36	361	842	0.49	491	931	0.62	616	1010	0.74	738	1081	0.86	856
1500		773	0.42	422	875	0.57	564	963	0.70	699	1040	0.84	831	1110	0.96	960
1600		810	0.49	491	909	0.65	643	994	0.79	790	1070	0.94	932	1140	1.08	1070
1700		847	0.57	567	943	0.73	730	1027	0.89	888	1101	1.05	1040	1170	1.20	1189
1800		885	0.66	652	978	0.83	826	1060	1.00	994	1133	1.16	1157	—	—	—
1900		923	0.75	745	1014	0.94	930	1093	1.11	1109	—	—	—	—	—	—
2000		962	0.85	847	1049	1.05	1043	—	—	—	—	—	—	—	—	—
581B048 (4 TONS) — STANDARD MOTOR (BELT DRIVE)* (cont)
Airflow							External Static Pressure (in. wg)
			1.2			1.4			1.6			1.8			2.0
(Cfm)
		Rpm	Bhp	Watts	Rpm	Bhp	Watts	Rpm	Bhp	Watts	Rpm	Bhp	Watts	Rpm	Bhp	Watts
1200		1093	0.77	767	1155	0.87	861	1213	0.96	955	1268	1.05	1047	1321	1.14	1137
1300		1119	0.87	866	1181	0.98	970	1239	1.08	1073	1294	1.18	1175	—	—	—
1400		1147	0.98	972	1208	1.09	1086	—	—	—	—	—	—	—	—	—
1500		1175	1.09	1086	—	—	—	—	—	—	—	—	—	—	—	—
1600		—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
1700		—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
1800		—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
1900		—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
2000		—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
	LEGEND								Refer to page 103 for general Fan Performance Data notes.
Bhp — Brake Horsepower									NOTES:

Watts	— Input Watts to Motor	1.	Boldface indicates field-supplied drive is required.
*Motor	drive range: 770 to 1185 rpm. All other rpms require field-	2.	Maximum continuous bhp is 1.20.

supplied drive.

581B048 (4 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)*

Airflow						External Static Pressure (in. wg)
		0.2			0.4			0.6			0.8			1.0
(Cfm)
	Rpm	Bhp	Watts	Rpm	Bhp	Watts	Rpm	Bhp	Watts	Rpm	Bhp	Watts	Rpm	Bhp	Watts
1200	666	0.26	257	778	0.37	367	871	0.47	471	952	0.57	572	1025	0.67	670
1300	701	0.31	306	810	0.43	426	901	0.54	540	981	0.65	651	1053	0.76	760
1400	737	0.36	361	842	0.49	491	931	0.62	616	1010	0.74	738	1081	0.86	856
1500	773	0.42	422	875	0.57	564	963	0.70	699	1040	0.84	831	1110	0.96	960
1600	810	0.49	491	909	0.65	643	994	0.79	790	1070	0.94	932	1140	1.08	1070
1700	847	0.57	567	943	0.73	730	1027	0.89	888	1101	1.05	1040	1170	1.20	1189
1800	885	0.66	652	978	0.83	826	1060	1.00	994	1133	1.16	1157	1200	1.32	1316
1900	923	0.75	745	1014	0.94	930	1093	1.11	1109	1165	1.29	1283	1231	1.46	1453
2000	962	0.85	847	1049	1.05	1043	1127	1.24	1233	1198	1.42	1417	1263	1.61	1598
581B048 (4 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)* (cont)
Airflow						External Static Pressure (in. wg)
		1.2			1.4			1.6			1.8			2.0
(Cfm)
	Rpm	Bhp	Watts	Rpm	Bhp	Watts	Rpm	Bhp	Watts	Rpm	Bhp	Watts	Rpm	Bhp	Watts
1200	1093	0.77	767	1155	0.87	861	1213	0.96	955	1268	1.05	1047	1321	1.14	1137
1300	1119	0.87	866	1181	0.98	970	1239	1.08	1073	1294	1.18	1175	1346	1.28	1275
1400	1147	0.98	972	1208	1.09	1086	1265	1.21	1199	1320	1.32	1310	1371	1.43	1419
1500	1175	1.09	1086	1235	1.22	1209	1292	1.34	1332	1346	1.46	1452	1397	1.58	1572
1600	1204	1.21	1207	1263	1.35	1340	1320	1.48	1472	1373	1.61	1603	1424	1.74	1732
1700	1233	1.34	1336	1292	1.49	1480	1348	1.63	1622	1401	1.77	1762	1451	1.91	1901
1800	1262	1.48	1473	1321	1.64	1627	1376	1.79	1779	1428	1.94	1930	1479	2.09	2078
1900	1293	1.63	1620	1350	1.79	1784	1405	1.96	1946	1457	2.12	2106	1506	2.28	2265
2000	1323	1.79	1776	1380	1.96	1950	1434	2.13	2123	1486	2.31	2293	—	—	—

LEGEND

Bhp — Brake Horsepower

Watts — Input Watts to Motor

*Motor drive range: 1075 to 1455 rpm. All other rpms require field- supplied drive.

Refer to page 103 for general Fan Performance Data notes.

NOTES:

1.Boldface indicates field-supplied drive is required.

2.Maximum continuous bhp is 2.40.

104