Bryant 581A/B manual 219

PERFORMANCE DATA (cont)

FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont)

581A155 (12 TONS) WITH STANDARD MOTOR (High Heat Units)*
Airflow							Available External Static Pressure (in. wg)
			0.2			0.4			0.6				0.8			1.0
(Cfm)
		Rpm	Watts	Bhp	Rpm	Watts	Bhp	Rpm	Watts	Bhp		Rpm	Watts	Bhp	Rpm	Watts	Bhp
3750		622	888	0.89	713	1027	1.13	795	1234	1.37		869	1454	1.63	936	1584	1.89
4000		652	1015	1.04	738	1168	1.28	818	1388	1.54		890	1620	1.80	956	1756	2.07
4250		682	1151	1.20	763	1317	1.45	841	1550	1.72		911	1793	1.99	976	1937	2.27
4500		713	1295	1.38	790	1474	1.63	864	1719	1.91		934	1973	2.20	997	2126	2.49
4750		744	1448	1.58	817	1641	1.84	889	1896	2.12		956	2159	2.42	1019	2326	2.72
5000		776	1610	1.80	845	1817	2.06	914	2081	2.35		979	2353	2.66	1041	2536	2.97
5250		808	1783	2.04	874	2003	2.31	940	2277	2.60		1003	2556	2.91	1064	2757	3.24
5500		840	1967	2.29	903	2200	2.57	966	2482	2.87		1028	2768	3.19
															1087	2991	3.52
5750		872	2163	2.57	933	2410	2.86	993	2699	3.16					1110	3237	3.83
												1053	2990	3.49
6000		905	2373	2.87	963	2634	3.16					1078	3225	3.81	1134	3497	4.15
								1021	2929	3.47
6250		937	2596	3.19				1049	3172	3.81		1105	3473	4.15	1159	3769	4.50
					994	2872	3.49
581A155 (12 TONS) WITH STANDARD MOTOR (High Heat Units)* (cont)
Airflow							Available External Static Pressure (in. wg)
			1.2			1.4			1.6				1.8			2.0
(Cfm)
		Rpm	Watts	Bhp	Rpm	Watts	Bhp	Rpm	Watts	Bhp		Rpm	Watts	Bhp	Rpm	Watts	Bhp
3750		999	1829	2.15	1059	2091	2.42	1117	2343	2.70		1174	2521	2.99	1228	2801	3.29
4000		1017	2010	2.35	1076	2279	2.63	1132	2540	2.91		1186	2738	3.21
															1239	3023	3.51
4250		1036	2198	2.56	1093	2474	2.85	1148	2743	3.14					1253	3251	3.75
												1201	2962	3.44
4500		1056	2395	2.78	1112	2675	3.08					1217	3194	3.70	1267	3487	4.01
								1166	2951	3.39
4750		1077	2601	3.03	1132	2885	3.34	1184	3168	3.65		1235	3435	3.97	1284	3731	4.29
5000		1098	2816	3.29				1204	3392	3.93		1253	3683	4.26	1301	3981	4.59
					1152	3104	3.61
5250					1173	3332	3.90	1224	3626	4.23		1273	3940	4.57	1320	4239	4.91
		1120	3042	3.56
5500		1142	3279	3.86	1195	3570	4.20	1245	3870	4.55		1293	4203	4.89	1339	4501	5.24
5750		1165	3528	4.18	1217	3819	4.53	1266	4125	4.88		1313	4471	5.24	—	—	—
6000		1188	3789	4.51	1239	4080	4.88	1288	4389	5.24		—	—	—	—	—	—
6250		1212	4062	4.87	1262	4351	5.24	—	—	—		—	—	—	—	—	—
		LEGEND							NOTES:
Bhp	—	Brake Horsepower							1.		Field-supplied motor required.
Watts	—	Input Watts to Motor							2. Maximum continuous bhp for the standard motor is 3.13 (for 208/230 and
*Standard low-medium static drive range is 895 to 1147 rpm. Other rpms require a									460-v units) or 3.38 (for 575-v units). The maximum continuous watts is
									2700 (for 208/230 and 460-v units) or 3065 (for 575-v units). Do not adjust
field-supplied drive.
									motor rpm such that motor maximum bhp and/or watts is exceeded at the
Refer to page 230 for general Fan Performance Data notes.
									maximum operating cfm. See Evaporator Fan Motor Data tables for more

information.

3. Fan performance is identical for horizontal discharge applications using Bryant horizontal adapter curb.

581A155 (12 TONS) WITH OPTIONAL MOTOR (High Heat Units)*
Airflow							Available External Static Pressure (in. wg)
			0.2			0.4			0.6				0.8				1.0
(Cfm)
		Rpm	Watts	Bhp	Rpm	Watts	Bhp	Rpm	Watts	Bhp		Rpm		Watts	Bhp	Rpm	Watts	Bhp
3750		622	888	0.89	713	1027	1.13	795	1234	1.37		869		1454	1.63	936	1584	1.89
4000		652	1015	1.04	738	1168	1.28	818	1388	1.54		890		1620	1.80	956	1756	2.07
4250		682	1151	1.20	763	1317	1.45	841	1550	1.72		911		1793	1.99	976	1937	2.27
4500		713	1295	1.38	790	1474	1.63	864	1719	1.91		934		1973	2.20	997	2126	2.49
4750		744	1448	1.58	817	1641	1.84	889	1896	2.12		956		2159	2.42	1019	2326	2.72
5000		776	1610	1.80	845	1817	2.06	914	2081	2.35		979		2353	2.66	1041	2536	2.97
5250		808	1783	2.04	874	2003	2.31	940	2277	2.60		1003		2556	2.91	1064	2757	3.24
5500		840	1967	2.29	903	2200	2.57	966	2482	2.87		1028		2768	3.19	1087	2991	3.52
5750		872	2163	2.57	933	2410	2.86	993	2699	3.16		1053		2990	3.49	1110	3237	3.83
6000		905	2373	2.87	963	2634	3.16	1021	2929	3.47		1078		3225	3.81	1134	3497	4.15
6250		937	2596	3.19	994	2872	3.49	1049	3172	3.81		1105		3473	4.15
																1159	3769	4.50
581A155 (12 TONS) WITH OPTIONAL MOTOR (High Heat Units)* (cont)
Airflow							Available External Static Pressure (in. wg)
			1.2			1.4			1.6				1.8				2.0
(Cfm)
		Rpm	Watts	Bhp	Rpm	Watts	Bhp	Rpm	Watts	Bhp		Rpm		Watts	Bhp	Rpm	Watts	Bhp
3750		999	1829	2.15	1059	2091	2.42	1117	2343	2.70		1174		2521	2.99	1228	2801	3.29
4000		1017	2010	2.35	1076	2279	2.63	1132	2540	2.91		1186		2738	3.21	1239	3023	3.51
4250		1036	2198	2.56	1093	2474	2.85	1148	2743	3.14		1201		2962	3.44	1253	3251	3.75
4500		1056	2395	2.78	1112	2675	3.08	1166	2951	3.39		1217		3194	3.70	1267	3487	4.01
4750		1077	2601	3.03	1132	2885	3.34	1184	3168	3.65		1235		3435	3.97	1284	3731	4.29
5000		1098	2816	3.29	1152	3104	3.61	1204	3392	3.93						1301	3981	4.59
												1253		3683	4.26
5250		1120	3042	3.56	1173	3332	3.90	1224	3626	4.23		1273		3940	4.57	1320	4239	4.91
5500		1142	3279	3.86	1195	3570	4.20					1293		4203	4.89	1339	4501	5.24
								1245	3870	4.55
5750		1165	3528	4.18	1217	3819	4.53	1266	4125	4.88		1313		4471	5.24	—	—	—
6000		1188	3789	4.51	1239	4080	4.88	1288	4389	5.24		—		—	—	—	—	—
6250		1212	4062	4.87	1262	4351	5.24	—	—		—	—		—	—	—	—	—
		LEGEND							NOTES:
Bhp	—	Brake Horsepower							1.		Field-supplied motor required.
Watts	—	Input Watts to Motor							2. Maximum continuous bhp for the optional motor is 4.26. The maximum contin-
*Alternate high-static drive range is 1040 to 1315. Other rpms require a field-									uous watts is 3610. Do not adjust motor rpm such that motor maximum bhp
									and/or watts is exceeded at the maximum operating cfm. See Evaporator Fan
supplied drive.
									Motor Data tables for more information.
Refer to page 230 for general Fan Performance Data notes.
									3. Fan	performance is			identical for		horizontal	discharge	applications using

Bryant horizontal adapter curb.

581A155-300

219