Bryant 581A/B manual 581B102 81/2 Tons Standard Motor Belt Drive

PERFORMANCE DATA (cont)

FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont)

	581B102 (81/2 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
	2500	541	0.50	467	624	0.66	614	701	0.83	771	771	1.00	936	837	1.19	1109
	2600	556	0.55	513	637	0.71	665	711	0.89	827	781	1.07	996	845	1.26	1173
	2700	571	0.60	562	650	0.77	720	722	0.95	885	790	1.14	1059	854	1.33	1241
	2800	586	0.66	615	663	0.83	777	734	1.02	948	800	1.21	1126	863	1.41	1312
	2900	601	0.72	672	676	0.90	839	745	1.09	1014	811	1.28	1197	872	1.49	1387
	3000	616	0.79	732	689	0.97	904	757	1.16	1083	821	1.36	1271	882	1.57	1465
	3100	632	0.85	796	703	1.04	972	769	1.24	1157	832	1.45	1349	892	1.66	1548
	3200	648	0.93	864	717	1.12	1045	782	1.32	1235	843	1.53	1431	902	1.75	1635
	3300	663	1.00	936	731	1.20	1122	795	1.41	1316	855	1.63	1517	912	1.85	1725
	3400	679	1.09	1012	745	1.29	1203	808	1.50	1402	867	1.72	1608	923	1.95	1820
150	3500	695	1.17	1092	760	1.38	1288	821	1.60	1492	879	1.83	1703	934	2.06	1920
	3600	711	1.26	1177	774	1.48	1379	834	1.70	1587	891	1.93	1802	945	2.17	2024
581B036-	3700	728	1.36	1266	789	1.58	1473	848	1.81	1686	904	2.04	1906	957	2.29	2132
	3800	744	1.46	1361	804	1.69	1572	861	1.92	1790	916	2.16	2015	969	2.41	2246
	3900	760	1.57	1460	819	1.80	1676	875	2.04	1899	929	2.28	2128	981	2.53	2364
	4000	777	1.68	1563	834	1.91	1785	889	2.16	2012	942	2.41	2247	993	2.67	2487
	4100	793	1.79	1672	850	2.04	1899	904	2.29	2132	956	2.54	2371	1006	2.80	2615
	4200	810	1.92	1786	865	2.16	2018	918	2.42	2255	969	2.68	2499	—	—	—
	4300	826	2.04	1906	880	2.30	2142	932	2.56	2385	983	2.82	2633	—	—	—
	581B102 (81/2 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
	2500	900	1.38	1289	959	1.58	1476	1015	1.79	1669	1069	2.00	1868	1121	2.22	2073
	2600	907	1.46	1357	965	1.66	1548	1021	1.87	1745	1074	2.09	1948	1125	2.31	2158
	2700	914	1.53	1429	972	1.74	1624	1027	1.96	1825	1079	2.18	2032	1130	2.41	2245
	2800	922	1.61	1505	979	1.83	1704	1033	2.05	1909	1085	2.27	2120	1135	2.51	2337
	2900	931	1.70	1584	986	1.92	1787	1040	2.14	1996	1091	2.37	2211	1141	2.61	2432
	3000	939	1.79	1667	994	2.01	1874	1047	2.24	2087	1098	2.47	2307	1147	2.71	2532
	3100	948	1.88	1753	1002	2.11	1965	1054	2.34	2183	1105	2.58	2406	1153	2.83	2635
	3200	957	1.98	1844	1011	2.21	2060	1062	2.45	2283	1112	2.69	2510	—	—	—
	3300	967	2.08	1939	1020	2.32	2160	1070	2.56	2386	1119	2.81	2618	—	—	—
	3400	977	2.19	2039	1029	2.43	2264	1079	2.67	2494	—	—	—	—	—	—
	3500	987	2.30	2143	1038	2.54	2372	1088	2.80	2607	—	—	—	—	—	—
	3600	998	2.41	2251	1048	2.66	2485	—	—	—	—	—	—	—	—	—
	3700	1008	2.54	2364	1058	2.79	2602	—	—	—	—	—	—	—	—	—
	3800	1019	2.66	2482	—	—	—	—	—	—	—	—	—	—	—	—
	3900	1031	2.79	2605	—	—	—	—	—	—	—	—	—	—	—	—
	4000	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
	4100	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
	4200	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
	4300	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

LEGEND

Bhp — Brake Horsepower Input to Fan

Watts — Input Watts to Motor

*Motor drive range: 840 to 1085 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 2.90.

110