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

PERFORMANCE DATA (cont)

FAN PERFORMANCE — VERTICAL 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	513	0.54	505	595	0.76	713	665	1.01	940	728	1.27	1187	786	1.56	1453
2300	521	0.57	531	601	0.79	741	671	1.04	972	734	1.31	1222	791	1.60	1489
2400	535	0.63	584	615	0.86	802	684	1.11	1038	745	1.39	1293	802	1.68	1566
2500	551	0.69	642	628	0.93	866	696	1.19	1109	757	1.47	1369	813	1.77	1647
2550	558	0.72	673	635	0.97	900	702	1.23	1146	763	1.51	1409	818	1.81	1689
2600	566	0.76	705	642	1.00	935	709	1.27	1183	769	1.55	1450	824	1.86	1732
2700	582	0.83	771	656	1.08	1008	721	1.35	1263	781	1.65	1535	835	1.95	1823
2800	597	0.90	842	670	1.16	1086	734	1.44	1347	793	1.74	1625	847	2.06	1917
2900	613	0.98	918	684	1.25	1169	748	1.54	1436	805	1.84	1720	859	2.16	2019
3000	629	1.07	999	699	1.35	1256	761	1.64	1530	818	1.95	1820	871	2.28	2125	581B036
3400	694	1.47	1374	758	1.78	1660	816	2.10	1961	870	2.44	2275	920	2.79	2603
3100	645	1.16	1085	713	1.45	1349	775	1.75	1630	831	2.06	1925	883	2.40	2235
3200	662	1.26	1176	728	1.55	1448	788	1.86	1734	844	2.18	2036	895	2.52	2352
3300	678	1.36	1272	743	1.66	1551	802	1.98	1845	857	2.31	2152	908	2.65	2475
3500	711	1.59	1482	773	1.90	1775	831	2.23	2082	884	2.58	2402	933	2.93	2737	-150
3600	727	1.71	1596	789	2.03	1896	845	2.37	2210	897	2.72	2537	946	3.09	2877
3700	744	1.84	1716	804	2.17	2023	860	2.51	2343	911	2.87	2677	959	3.24	3023
3750	752	1.91	1778	812	2.24	2089	867	2.59	2413	918	2.95	2750	966	3.32	3100
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	839	1.86	1735	889	2.18	2032	935	2.52	2345	980	2.87	2673	1022	3.23	3015
2300	844	1.90	1773	893	2.22	2073	940	2.56	2389	984	2.91	2718	1027	3.28	3062
2400	854	1.99	1855	903	2.32	2159	950	2.66	2478	993	3.02	2812	1035	3.39	3159
2500	865	2.08	1940	913	2.41	2249	959	2.76	2573	1003	3.12	2911	1044	3.50	3261
2550	870	2.13	1985	918	2.46	2296	964	2.81	2622	1008	3.18	2962	1049	3.55	3315
2600	875	2.18	2031	923	2.51	2344	969	2.87	2673	1012	3.23	3014	1054	3.61	3370
2700	886	2.28	2126	934	2.62	2445	979	2.98	2777	1022	3.35	3123	1063	3.74	3483
2800	897	2.39	2227	944	2.73	2550	989	3.10	2888	1032	3.47	3238	1073	3.86	3601
2900	908	2.50	2333	955	2.85	2661	1000	3.22	3003	1042	3.60	3358	1083	4.00	3725
3000	920	2.62	2443	966	2.98	2777	1010	3.35	3123	1052	3.74	3484	1093	4.14	3856
3100	931	2.75	2560	977	3.11	2899	1021	3.49	3250	1063	3.88	3615	—	—	—
3200	943	2.88	2682	989	3.25	3026	1032	3.63	3383	1074	4.02	3752	—	—	—
3300	955	3.01	2810	1000	3.39	3159	1043	3.78	3521	1084	4.18	3896	—	—	—
3400	967	3.16	2945	1012	3.54	3299	1055	3.93	3667	—	—	—	—	—	—
3500	980	3.31	3084	1024	3.69	3445	1066	4.09	3817	—	—	—	—	—	—
3600	992	3.46	3230	1036	3.86	3596	—	—	—	—	—	—	—	—	—
3700	1005	3.63	3383	1048	4.03	3755	—	—	—	—	—	—	—	—	—
3750	1011	3.71	3462	1054	4.11	3836	—	—	—	—	—	—	—	—	—

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.

Refer to page 103 for general Fan Performance Data notes.

NOTES:

1.Boldface indicates field-supplied drive is required.

2.Maximum continuous bhp is 4.20.

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