Bryant 581A/B manual 581B090 71/2 Tons HIGH-STATIC Motor Belt Drive

PERFORMANCE DATA (cont)

FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont)

581B090 (71/2 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
2250	505	0.52	484	586	0.73	681	657	0.97	901	722	1.22	1142	782	1.50	1403
2300	513	0.55	509	592	0.76	708	663	1.00	931	727	1.26	1174	787	1.54	1437
2400	527	0.60	561	605	0.82	766	674	1.07	993	738	1.33	1241	796	1.62	1508
2500	543	0.66	617	618	0.89	828	686	1.14	1060	748	1.41	1312	806	1.70	1583
2550	550	0.69	647	625	0.92	860	692	1.17	1095	754	1.45	1349	811	1.74	1623
2600	558	0.73	677	632	0.96	894	698	1.21	1131	759	1.49	1388	816	1.78	1664
2700	574	0.80	742	645	1.03	964	710	1.29	1207	770	1.58	1469	826	1.88	1749
2800	589	0.87	811	659	1.11	1039	723	1.38	1287	782	1.67	1554	837	1.97	1839
2900	605	0.95	885	673	1.20	1119	736	1.47	1372	794	1.76	1644	848	2.07	1933
3000	621	1.03	963	688	1.29	1204	749	1.57	1463	806	1.87	1740	859	2.18	2033
3100	637	1.12	1046	702	1.39	1293	762	1.67	1558	818	1.97	1840	871	2.29	2139
3200	654	1.22	1135	717	1.49	1388	776	1.78	1658	831	2.09	1946	882	2.41	2249
3300	670	1.32	1228	732	1.60	1488	789	1.89	1764	843	2.21	2057	894	2.54	2365
3400	686	1.42	1328	747	1.71	1593	803	2.01	1876	856	2.33	2174	907	2.67	2488
3500	703	1.54	1433	762	1.83	1705	817	2.14	1993	870	2.46	2297	919	2.81	2616
3600	720	1.66	1543	777	1.95	1822	832	2.27	2116	883	2.60	2425	932	2.95	2750
3700	736	1.78	1660	793	2.09	1944	846	2.41	2245	896	2.75	2560	944	3.10	2889
3750	745	1.85	1721	801	2.15	2008	853	2.48	2312	903	2.82	2630	951	3.18	2962

581B036-150

581B090 (71/2 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
2250	838	1.81	1683	891	2.12	1981	941	2.46	2297	988	2.82	2629	1033	3.19	2976
2300	842	1.84	1719	895	2.17	2019	944	2.51	2336	992	2.86	2669	1037	3.24	3018
2400	851	1.92	1793	903	2.25	2097	952	2.59	2416	999	2.95	2752	1043	3.33	3104
2500	860	2.01	1873	911	2.34	2180	960	2.68	2502	1006	3.05	2842	1051	3.43	3196
2550	865	2.05	1914	916	2.38	2223	964	2.73	2547	1010	3.10	2888	1054	3.48	3243
2600	869	2.10	1957	920	2.43	2267	968	2.78	2593	1014	3.15	2935	1058	3.53	3292
2700	879	2.19	2046	929	2.53	2360	976	2.88	2689	1022	3.25	3035	1066	3.64	3395
2800	889	2.29	2140	938	2.64	2458	985	2.99	2791	1030	3.37	3140	1073	3.76	3503
2900	899	2.40	2239	948	2.75	2561	994	3.11	2898	1039	3.49	3250	1082	3.88	3616
3000	910	2.51	2343	958	2.86	2670	1004	3.23	3011	1048	3.61	3366	1090	4.01	3736
3100	921	2.63	2453	968	2.98	2783	1013	3.35	3128	1057	3.74	3488	1099	4.14	3861
3200	932	2.75	2569	978	3.11	2903	1023	3.49	3252	1066	3.88	3616	—	—	—
3300	943	2.88	2690	989	3.25	3029	1033	3.63	3382	1076	4.02	3749	—	—	—
3400	954	3.02	2816	1000	3.39	3159	1044	3.77	3518	1086	4.17	3889	—	—	—
3500	966	3.16	2950	1011	3.54	3297	1054	3.92	3660	—	—	—	—	—	—
3600	978	3.31	3088	1022	3.69	3442	1065	4.08	3808	—	—	—	—	—	—
3700	990	3.47	3233	1034	3.85	3591	—	—	—	—	—	—	—	—	—
3750	996	3.55	3308	1040	3.93	3669	—	—	—	—	—	—	—	—	—

LEGEND

Bhp — Brake Horsepower Input to Fan

Watts — Input Watts to Motor

*Motor drive range: 860 to 1080 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 4.20.

121