Bryant 581A/B manual 581A300 25 Tons High Heat Units

PERFORMANCE DATA (cont)

FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont)

581A300 (25 TONS) (High Heat Units)*
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
6,500	799	2,730	3.14		833	2,914		3.35		872		3,135		3.61		914		3,392		3.90		958		3,687		4.24
7,000	856	3,294	3.79		887	3,481		4.00		921		3,699		4.25		958		3,950		4.54		999		4,235		4.87
7,500	913	3,929	4.52		941	4,118		4.74		972		4,335		4.99		1006		4,582		5.27		1042		4,860		5.59
8,000	971	4,637	5.33		996	4,829		5.55		1024		5,046		5.80		1055		5,290		6.08		1088		5,562		6.40
8,500	1029	5,421	6.24		1052	5,617		6.46		1078		5,835		6.71		1106		6,077		6.99		1136		6,345		7.30
9,000	1087	6,285	7.23		1108	6,484		7.46		1132		6,703		7.71		1158		6,946		7.99		1185		7,211		8.29
9,500	1145	7,231	8.32		1165	7,433		8.55		1187		7,655		8.80		1211		7,898		9.08		1236		8,161		9.39
10,000	1203	8,262	9.50		1222	8,468		9.74		1243		8,693		10.00		1265		8,936		10.28		1288		9,199		10.58
10,500	1261	9,381	10.79		1279	9,592		11.03		1299		9,820		11.29		1319		10,065		11.58		1341		10,327		11.88
11,000	1320	10,592	12.18		1337	10,807		12.43		1355		11,038		12.70		1374		11,284		12.98		1394		11,547		13.28
11,500	1378	11,896	13.68		—		—		—		—		—		—		—		—		—		—		—	—
12,000	—	—		—	—		—		—		—		—		—		—		—		—		—		—	—
12,500	—	—		—	—		—		—		—		—		—		—		—		—		—		—	—
581A300 (25 TONS) (High Heat Units)* (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
6,500	1005	4,020		4.62	1052		4,390		5.05		1100		4,791		5.51		1148		5,221		6.00		1195		5673	6.52
7,000	1041	4,555		5.24	1084		4,908		5.64		1128		5,294		6.09		1172		5,710		6.57		1217		6153	7.08
7,500	1080	5,168		5.94	1119		5,508		6.33		1160		5,878		6.76		1201		6,279		7.22		1242		6708	7.71
8,000	1122	5,862		6.74	1158		6,190		7.12		1195		6,548		7.53		1233		6,934		7.97		1272		7347	8.45
8,500	1167	6,638		7.63	1200		6,959		8.00		1234		7,305		8.40		1269		7,677		8.83		1304		8076	9.29
9,000	1214	7,499		8.63	1244		7,813		8.99		1275		8,149		9.37		1308		8,511		9.79		1340		8896	10.23
9,500	1262	8,447		9.72	1290		8,754		10.07		1319		9,084		10.45		1349		9,437		10.85		1379		9812	11.28
10,000	1312	9,482		10.91	1338		9,785		11.25		1365		10,110		11.63		1392		10,454		12.02		—		—	—
10,500	1363	10,608		12.20	1387		10,909		12.55		—		—		—		—		—		—		—		—	—
11,000	—	—		—	—		—		—		—		—		—		—		—		—		—		—	—
11,500	—	—		—	—		—		—		—		—		—		—		—		—		—		—	—
12,000	—	—		—	—		—		—		—		—		—		—		—		—		—		—	—
12,500	—	—		—	—		—		—		—		—		—		—		—		—		—		—	—

LEGEND	Refer to page 230 for general Fan Performance Data notes.
Bhp — Brake Horsepower Input to Fan	NOTE: Maximum continuous bhp is:
Watts — Input Watts to Motor	Low Range: 5.75
*Motor drive ranges:	High Range: 8.63
Low Range: 805-1007
High Range: 941-1176
All other rpms require field-supplied drive.

581A155-300

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