Bryant 579F User Manual page 276

VOLTAGE
NOMINAL
RANGE
UNIT VOLTAGE No. 1
581A (3 Ph,
Min Max RLA
60 Hz)
208/230 187 253 16.7
210 460 414 506 9
575 518 633 7
208/230 187 253 22.4
240
460 414 506 10.7
575 518 633 9.3
208/230 187 253 47.1
300 460 414 506 19.6
575 518 633 15.8
FLA — Full Load Amps
HACR — Heating, Air Conditioning and
Refrigeration
IFM — Indoor (Evaporator) Fan Motor
LRA — Locked Rotor Amps
MCA — Minimum Circuit Amps
*Fuse or HACR circuit breaker.
NOTES:
1. In compliance with NEC requirements for multimotor and combination load equipment
(refer to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be
fuse or HACR breaker. Canadian units may be fuse or circuit breaker.
2. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply voltage is greater than 2%.
Use the following formula to determine the percent of voltage imbalance.
% Voltage Imbalance
max voltage deviation from average voltage
= 100 x
average voltage
ELECTRICAL DATA — 581A (cont)
ELECTRICAL DATA — 581A210-300 WITHOUT CONVENIENCE OUTLET
COMPRESSOR
No. 2 No. 3
LRA RLA LRA RLA LRA Qty
130 16.7 130 22.4 184 4
70 9 70 10.7 90 4
55 7 55 9.3 73 4
184 22.4 184 22.4 184 4
90 10.7 90 10.7 90 4
73 9.3 73 9.3 73 4
245 47.1 245 — — 6
125 19.6 125 — — 6
100 15.8 100 — — 6
LEGEND
MCA — Minimum Circuit Amps
MOCP— Maximum Overcurrent Protection
NEC — National Electrical Code
OFM — Outdoor (Condenser) Fan Motor
RLA — Rated Load Amps
POWER
OFM IFM
EXHAUST
FLA
Hp Hp FLA Qty Hp
(ea)
— —
3.7 10.6/ 9.6
2 1
— —
0.25 1.5 5 16.7/15.2
2 1
— —
7.5 24.2/22
2 1
— —
3.7 4.8
2 1
— —
0.25 0.7 5 7.6
2 1
— —
7.5 11
2 1
— —
3 3.9
2 1
— —
0.25 0.7 5 6.1
2 1
— —
7.5 9
2 1
— —
3.7 10.6/ 9.6
2 1
— —
5 16.7/15.2
2 1
0.25 1.5
— —
7.5 24.2/22
2 1
— —
10 30.8/28
2 1
— —
3.7 4.8
2 1
— —
5 7.6
2 1
0.25 0.7
— —
7.5 11
2 1
— —
10 14
2 1
— —
5 6.1
2 1
— —
0.25 0.7 7.5 9
2 1
— —
10 11
2 1
— —
5 16.7/15.2
2 1
— —
0.25 1.5 7.5 24.2/22
2 1
— —
10 30.8/28
2 1
— —
5 7.6
2 1
— —
0.25 0.7 7.5 11
2 1
— —
10 14
2 1
— —
5 6.1
2 1
— —
0.25 0.7 7.5 9
2 1
— —
10 11
2 1
Example: Supply voltage is 460-3-60.
Determine maximum deviation from average voltage.
(AB) 457 – 452 = 5 v
(BC) 464 – 457 = 7 v
(AC) 457 – 455 = 2 v
Maximum deviation is 7 v.
Determine percent of voltage imbalance.
% Voltage Imbalance = 100 x
This amount of phase imbalance is satisfactory as it is below the maximum allowable
2%.
:
IMPORTANT If the supply voltage phase imbalance is more than 2%, contact your local
electric utility company immediately.
276
COMBUSTION
POWER SUPPLY
FAN MOTOR
FLA
FLA MCA MOCP*
(ea)
— 78/ 77 100/ 90
5.9 90/ 89 100/100
— 84/ 83 100/100
0.5
5.9 96/ 94 100/100
— 92/ 89 100/100
5.9 104/101 125/110
— 39
3.1 45
— 42
0.3
3.1 48
— 45
3.1 51
— 32
2.4 37
— 35
0.24
2.4 39
— 37
2.4 42
— 89/ 88 100/100
5.9 101/100 110/110
— 96/ 94 100/100
5.9 107/106 125/125
0.5
— 103/101 125/110
5.9 115/113 125/125
— 112/108 125/125
5.9 124/120 150/125
— 42
3.1 49
— 45
3.1 51
0.3
— 49
3.1 55
— 52
3.1 59
— 39
2.4 44
— 42
0.24
2.4 47
— 44
2.4 49
— 132/130 175/175
5.9 143/142 175/175
— 139/137 175/175
0.5
5.9 151/149 175/175
— 146/143 175/175
5.9 158/155 200/200
— 56
3.1 62
— 59
0.3
3.1 66
— 62
3.1 69
— 46
2.4 51
— 49
0.24
2.4 54
— 51
2.4 56
AB = 452 v
BC = 464 v
AC = 455 v
452 + 464 + 455
Average Voltage =
3
1371
=
3
=
457
7
457
= 1.53%
DISCONNECT
SIZE
FLA
83/ 82
97/ 96
90/ 89
104/102
99/ 96
112/110
45 42
50 49
50 45
50 52
50 49
60 56
40 35
45 40
40 37
45 43
45 40
50 46
96/ 95
110/109
103/102
117/115
112/109
126/123
120/116
133/130
50 46
50 53
50 49
60 56
50 53
60 60
60 56
60 63
45 42
50 48
50 46
50 51
50 48
60 53
138/136
151/150
147/144
160/158
154/151
168/164
60 59
80 66
60 63
80 70
80 66
80 73
60 48
60 54
60 52
60 57
60 54
60 59