Bryant 581A/B Rpm Bhp Watts 1200 643 234 762, 1300 675 277, 1400 707 326, 1500 740 382, 1034

PERFORMANCE DATA (cont)

FAN PERFORMANCE — HORIZONTAL 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	643	0.23	234	762	0.34	343	859	0.46	458	944	0.58	579	1020	0.71	705
	1300	675	0.28	277	790	0.40	394	886	0.52	517	969	0.65	644	1044	0.78	777
	1400	707	0.33	326	819	0.45	452	913	0.58	581	996	0.72	716	1070	0.86	855
	1500	740	0.38	382	849	0.52	515	941	0.66	653	1023	0.80	795	1096	0.95	941
	1600	773	0.45	444	879	0.59	586	970	0.73	731	1050	0.88	880	1123	1.04	1034
	1700	807	0.52	513	910	0.67	663	999	0.82	817	1078	0.98	973	1150	1.14	1134
	1800	841	0.59	589	942	0.75	749	1029	0.91	910	1106	1.08	1074	—	—	—
	1900	875	0.68	674	974	0.85	842	1059	1.02	1012	1135	1.19	1184	—	—	—
	2000	910	0.77	767	1006	0.95	944	1090	1.13	1122	—	—	—	—	—	—
150	581B048 (4 TONS) — STANDARD MOTOR (BELT DRIVE)* (cont)
							External Static Pressure (in. wg)
581B036-	Airflow
			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	1089	0.84	837	1153	0.98	974	1213	1.12	1115	—	—	—	—	—	—
	1300	1113	0.92	915	1177	1.06	1058	—	—	—	—	—	—	—	—	—
	1400	1138	1.01	1000	1201	1.15	1149	—	—	—	—	—	—	—	—	—
	1500	1163	1.10	1092	—	—	—	—	—	—	—	—	—	—	—	—
	1600	1189	1.20	1191	—	—	—	—	—	—	—	—	—	—	—	—
	1700	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
	1800	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
	1900	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
	2000	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

LEGEND

Bhp — Brake Horsepower

Watts — Input Watts to Motor

*Motor drive range: 770 to 1185 rpm. All other rpms require field- supplied drive.

See page 103 for general fan performance notes.

NOTES:

1.Boldface indicates field-supplied drive is required.

2.Maximum continuous bhp is 1.20.

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	643	0.23	234	762	0.34	343	859	0.46	458	944	0.58	579	1020	0.71	705
1300	675	0.28	277	790	0.40	394	886	0.52	517	969	0.65	644	1044	0.78	777
1400	707	0.33	326	819	0.45	452	913	0.58	581	996	0.72	716	1070	0.86	855
1500	740	0.38	382	849	0.52	515	941	0.66	653	1023	0.80	795	1096	0.95	941
1600	773	0.45	444	879	0.59	586	970	0.73	731	1050	0.88	880	1123	1.04	1034
1700	807	0.52	513	910	0.67	663	999	0.82	817	1078	0.98	973	1150	1.14	1134
1800	841	0.59	589	942	0.75	749	1029	0.91	910	1106	1.08	1074	1177	1.25	1242
1900	875	0.68	674	974	0.85	842	1059	1.02	1012	1135	1.19	1184	1205	1.37	1360
2000	910	0.77	767	1006	0.95	944	1090	1.13	1122	1165	1.31	1302	1234	1.49	1485
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	1089	0.84	837	1153	0.98	974	1213	1.12	1115	1270	1.27	1262	1324	1.42	1413
1300	1113	0.92	915	1177	1.06	1058	1237	1.21	1205	1293	1.36	1358	1347	1.52	1514
1400	1138	1.01	1000	1201	1.15	1149	1261	1.31	1303	1317	1.47	1461	1370	1.63	1623
1500	1163	1.10	1092	1226	1.25	1247	1285	1.41	1407	1341	1.58	1571	1394	1.75	1740
1600	1189	1.20	1191	1252	1.36	1353	1310	1.53	1520	1365	1.70	1690	1418	1.87	1865
1700	1216	1.31	1299	1277	1.48	1468	1335	1.65	1640	1390	1.83	1817	1442	2.01	1998
1800	1242	1.42	1414	1303	1.60	1590	1361	1.78	1770	1415	1.96	1953	1467	2.15	2140
1900	1270	1.55	1538	1330	1.73	1721	1387	1.92	1908	1441	2.11	2098	1493	2.30	2292
2000	1297	1.68	1672	1357	1.87	1862	1414	2.07	2055	1467	2.26	2252	—	—	—

LEGEND

Bhp — Brake Horsepower

Watts — Input Watts to Motor

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

See page 103 for general fan performance notes.

NOTES:

1.Boldface indicates field-supplied drive is required.

2.Maximum continuous bhp is 2.40.

116