Bryant 581A operation manual

Table 6 — Fan Performance — 581A240270 (Low Heat Units)

					AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
CFM		0.2			0.4			0.6			0.8			1.0
	Rpm	Watts	Bhp	Rpm	Watts	Bhp	Rpm	Watts	Bhp	Rpm	Watts	Bhp	Rpm	Watts	Bhp
6,000	824	2607	3.09	894	2844	3.37	961	3085	3.66	1023	3330	3.95	1083	3578	4.24
6,500	881	3030	3.59	947	3266	3.88	1009	3507	4.16	1069	3751	4.45	1126	3998	4.74
7,000	939	3488	4.14	1001	3725	4.42	1060	3965	4.70	1116	4208	4.99	1170	4454	5.28
7,500	998	3982	4.72	1055	4218	5.00	1111	4458	5.29	1165	4701	5.58	1217	4946	5.87
8,000	1056	4512	5.35	1111	4748	5.63	1164	4988	5.92	1215	5230	6.20	1264	5474	6.49
8,500	1116	5077	6.02	1167	5314	6.30	1218	5553	6.59	1266	5795	6.87	1314	6039	7.16
9,000	1175	5678	6.74	1224	5915	7.02	1272	6154	7.30	1319	6395	7.59	1364	6639	7.88
9,500	1235	6315	7.49	1282	6552	7.77	1327	6791	8.06	1372	7033	8.34	1415	7276	8.63
10,000	1295	6988	8.29	1340	7225	8.57	1383	7465	8.86	1426	7706	9.14	1468	7949	9.43

					AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
CFM		1.2			1.4			1.6			1.8				2.0
	Rpm	Watts	Bhp	Rpm	Watts	Bhp	Rpm	Watts	Bhp	Rpm	Watts		Bhp	Rpm	Watts		Bhp
6,000	1141	3829	4.54	1196	4082	4.84	1249	4337	5.15	1301	4596		5.45	1351	4856		5.76
6,500	1181	4247	5.04	1234	4499	5.34	1285	4753	5.64	1334	5009		5.94	1383	5267		6.25
7,000	1223	4702	5.58	1274	4953	5.88	1323	5205	6.18	1371	5460		6.48	1417	5716		6.78
7,500	1267	5194	6.16	1316	5443	6.46	1363	5694	6.76	1409	5947		7.06	1454	6202		7.36
8,000	1313	5721	6.79	1359	5970	7.08	1405	6220	7.38	1449	6472		7.68	1493	6726		7.98
8,500	1360	6285	7.46	1405	6533	7.75	1449	6783	8.05	1491	7034		8.34	1533	7286		8.64
9,000	1408	6885	8.17	1451	7132	8.46	1494	7381	8.76	1535	7631		9.05	—	—		—
9,500	1458	7521	8.92	1499	7768	9.22	1540	8016	9.51	—	—		—	—	—	—
10,000	1508	8193	9.72	1549	8440	10.01	—	—	—	—	—	—	—	—	—

					AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
CFM		2.2			2.4					2.6			2.8				3.0
	Rpm	Watts	Bhp	Rpm	Watts		Bhp	Rpm		Watts	Bhp	Rpm	Watts		Bhp	Rpm	Watts		Bhp
6,000	1399	5118	6.07	1446	5381		6.38	1492		5647	6.70	1537	5914		7.02	—	—		—
6,500	1429	5527	6.56	1475	5789		6.87	1520		6052	7.18	—	—		—	—	—	—
7,000	1462	5974	7.09	1507	6234		7.40	1550		6495	7.71	—	—		—	—	—	—
7,500	1498	6459	7.66	1540	6717		7.97	—		—	—	—	—	—	—	—	—
8,000	1535	6981	8.28	—	—		—	—	—	—	—	—	—		—	—	—
8,500	—	—	—	—	—	—	—	—		—	—	—	—		—	—	—
9,000	—	—	—	—	—	—	—	—		—	—	—	—		—	—	—
9,500	—	—	—	—	—	—	—	—		—	—	—	—		—	—	—
10,000	—	—	—	—	—	—	—	—		—	—	—	—		—	—	—

		LEGEND
Bhp	—	Brake Horsepower
FIOP	—	Factory-Installed Option
Watts —		Input Watts to Motor

*Standard low-medium static drive range is 1002 to 1151 rpm. Alternate high-static drive range is 1193 to 1369. Other rpms require a field- supplied drive.

NOTES:

1.Maximum continuous bhp for the standard motor is 9.47 (for 208-v units) and 10.33 (for 230 and 460-v units). The maximum continuous watts is 7915 (for 208-v units) and 8640 (for 230 and 460-v units). Do not adjust motor rpm such that motor maximum bhp and/or watts is exceeded at the maximum operating cfm.

2.Static pressure losses (i.e., economizer) must be added to external static pressure before entering Fan Performance table.

3.Interpolation is permissible. Do not extrapolate.

4.Fan performance is based on wet coils, clean filters, and casing losses. See Table 13 for accessory/FIOP static pressure information.

5.Extensive motor and drive testing on these units ensures that the full bhp and watts range of the motor can be utilized with confidence. Using your fan motors up to the watts or bhp rating shown will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.

6.Use of a field-supplied motor may affect wiring size. Contact your Bryant representative for details.

—18—