Fan rpm at motor pulley settings, Electrical data – Bryant 581A User Manual
Page 19
FAN RPM AT MOTOR PULLEY SETTINGS*
UNIT
581A
MOTOR PULLEY TURNS OPEN
0
1
⁄
2
1
1
1
⁄
2
2
2
1
⁄
2
3
3
1
⁄
2
4
4
1
⁄
2
5
5
1
⁄
2
6
155
1526
1492
1459
1426
1393
1360
1326
1293
1260
1227
1194
—
—
180
1494
1472
1451
1430
1408
1387
1366
1345
1323
1302
1281
1259
1238
240
†
†
1536
1515
1493
1472
1451
1430
1408
1387
1366
1344
1323
*Approximate fan rpm shown.
†Do not run this fan at less than 1 turn open, as it will exceed the maximum
allowable rpm of 1550.
ELECTRICAL DATA
UNIT
581A
NOMINAL
VOLTAGE
(3 Ph,
60 Hz)
VOLTAGE
RANGE
COMPRESSOR
OFM
IFM
POWER
EXHAUST
COMBUSTION
FAN MOTOR
POWER SUPPLY
DISCONNECT
SIZE
No. 1
No. 2
Min Max RLA LRA RLA LRA Qty
FLA
(ea)
LRA
(ea)
Hp
FLA
LRA
FLA LRA
FLA
MCA
MOCP*
FLA
LRA
155
208/230
187
254
39.7
228
—
—
3
1.7
3.8
3.7 10.5/10.5 84.5/84.5
—
—
0.57
65/65
100/100
64/64
324/324
4.6
18.8
0.57
70/70
100/100
70/70
343/343
460
414
508
19.9
114
—
—
3
0.8
1.9
3.7
4.8
42.3
—
—
0.30
32
50
32
162
2.3
6.0
0.30
34
50
34
168
180
208/230
187
254
28.2
160
28.2
160
3
1.7
24.8
5
15.8/15.8
105/91
—
—
0.57
84/84
110/100
90/90
499/485
4.6
18.8
0.57
89/89
110/110
95/95
518/504
460
414
508
14.1
80
14.1
80
3
0.8
10.8
5
7.9
46
—
—
0.30
42
50
45
238
2.3
6.0
0.30
44
50
47
244
240
208/230
187
254
35.6
198
35.6
198
2
5.5
24.8 10 28.0/28.0
193/168
—
—
0.57
119/119 150/150 127/127 639/614
4.6
18.8
0.57
124/124 150/150 133/133 657/632
460
414
508
17.8
99
17.8
99
2
2.8
10.8 10
14.6
84
—
—
0.30
60
70
65
304
2.3
6.0
0.30
63
80
67
310
LEGEND
FLA
— Full Load Amps
HACR
— Heating, Air Conditioning and Refrigeration
IFM
— Indoor (Evaporator) Fan Motor
LRA
— Locked Rotor Amps
MCA
— Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection
NEC
— National Electrical Code
OFM
— Outdoor (Condenser) Fan Motor
RLA
— Rated Load Amps
*This is the maximum size permissible; smaller fuse size may be used where con-
ditions permit.
NOTES: In compliance with NEC requirements for multimotor and combination
load equipment (refer to NEC Articles 430 and 440), the overcurrent protective de-
vice for the unit shall be fuse or HACR breaker. The Canadian units may be fuse
or circuit breaker.
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