Bryant operation manual Fan Performance — 551A180, 22

Table 11 — Fan Performance — 551A180

551A180 (15 TONS)*

										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
4500		753		1307	1.53		753	1307		1.53	784	1397	1.64	859	1635	1.92	928	1880	2.20
4800		747		1384	1.62		747	1384		1.62	806	1563	1.83	878	1808	2.12	946	2060	2.42
5100		741		1465	1.72		752	1500		1.76	828	1745	2.05	898	1996	2.34	964	2255	2.65
5700		735		1659	1.95		805	1895		2.22	876	2156	2.53	942	2423	2.84	1004	2696	3.16
6000		759		1854	2.18		832	2118		2.48	901	2388	2.80	965	2663	3.12	1026	2943	3.45
6300		790		2088	2.45		860	2360		2.77	926	2638	3.09	988	2920	3.43	1048	3208	3.76
6600		821		2340	2.74		888	2621		3.07	952	2906	3.41	1013	3196	3.75	1070	3491	4.10
6900		852		2611	3.06		917	2900		3.40	979	3194	3.75	1038	3492	4.10	1094	3794	4.45
7200		883		2903	3.40		946	3200		3.75	1006	3501	4.11	1063	3807	4.47	1118	4117	4.83
7500		914		3215	3.77		975	3521		4.13	1033	3830	4.49	1089	4143	4.86	1142	4461	5.23
551A180 (15 TONS) (cont)*
										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
4500		993		2133	2.50		1055	2394		2.81	1114	2662	3.12	1170	2938	3.45	1224	3220	3.78
4800		1009		2319	2.72		1070	2585		3.03	1127	2859	3.35	1183	3139	3.68	1236	3427	4.02
5100		1026		2521	2.96		1086	2794		3.28	1142	3073	3.60	1196	3359	3.94	1248	3650	4.28
5700		1064		2975	3.49		1120	3260		3.82	1174	3551	4.17	1226	3848	4.51	1277	4151	4.87
6000		1083		3228	3.79		1139	3520		4.13	1192	3817	4.48	1243	4119	4.83	1292	4427	5.19
6300		1104		3501	4.11		1158	3799		4.46	1210	4102	4.81	1260	4410	5.17	1309	4724	5.54
6600		1125		3791	4.45		1178	4095		4.80	1229	4405	5.17	1278	4720	5.54	1326	5039	5.91
6900		1147		4101	4.81		1199	4412		5.18	1249	4728	5.55	1297	5050	5.92	—	—		—
7200		1170		4431	5.20		1221	4749		5.57	1270	5072	5.95	—	—	—	—	—		—
7500		1193		4781	5.61		1243	5107		5.99	—	—	—	—	—	—	—	—		—
551A180 (15 TONS) (cont)*
									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
4500	1276		3509		4.12	1326		3805	4.46		1375	4107	4.82	1421	4414	5.18	1467	4728		5.55
4800	1287		3721		4.36	1336		4020	4.72		1384	4326	5.07	1430	4638	5.44	1475	4955		5.81
5100	1299		3949		4.63	1347		4253	4.99		1395	4563	5.35	1440	4879	5.72	—	—		—
5700	1325		4458		5.23	1373		4772	5.60		1418	5091	5.97	—	—	—	—	—		—
6000	1340		4741		5.56	1387		5060	5.93		—	—	—	—	—	—	—	—		—
6300	1356		5043		5.91		—	—		—	—	—	—	—	—	—	—	—		—
6600		—		—	—		—	—		—	—	—	—	—	—	—	—	—		—
6900		—		—	—		—	—		—	—	—	—	—	—	—	—	—		—
7200		—		—	—		—	—		—	—	—	—	—	—	—	—	—		—
7500		—		—	—		—	—		—	—	—	—	—	—	—	—	—		—

LEGEND

Bhp — Brake Horsepower

FIOP — Factory-Installed Option

Watts — Input Watts to Motor

*Standard low-medium static drive range is 873 to 1021 rpm. Alternate high-static drive range is 1025 to 1200. Other rpms require a field- supplied drive.

NOTES:

1.Maximum continuous bhp for the standard motor is 6.13. The max- imum continuous watts is 5180. 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., EconoMi$er) must be added to exter- nal 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 confi- dence. 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.

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