Bryant 581A/B Heating System User Manual


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ELECTRICAL DATA — 581A (cont)
ELECTRICAL DATA — 581A210-300 WITH OPTIONAL CONVENIENCE OUTLET
LEGEND
*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
Example: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
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.
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.
UNIT
581A
NOMINAL
VOLTAGE
(3 Ph,
60 Hz)
VOLTAGE
RANGE
COMPRESSOR
OFM IFM
POWER
EXHAUST
COMBUSTION
FAN MOTOR
POWER SUPPLY
DISCONNECT
SIZE
No. 1No. 2No. 3
Min Max RLA LRA RLA LRA RLA LRA Qty Hp
FLA
(ea)
Hp FLA Qty Hp
FLA
(ea)
FLA MCA MOCP* FLA
210
208/230 187 253 16.7 130 16.7 130 22.4 184 4 0.25 1.5
3.7 10.6/ 9.6
—— —
0.5
83/ 82 100/100 89/ 88
2 1 5.9 95/ 94 100/100 103/101
5 16.7/15.2
— — — 89/ 88 100/100 96/ 94
2 1 5.9 101/ 99 110/100 110/108
7.5 24.2/22
— — — 97/ 94 100/100 105/102
2 1 5.9 109/106 125/125 118/116
460 414 506 9 70 9 70 10.7 90 4 0.25 0.7
3.7 4.8
—— —
0.3
42 50 45
213.1 48 50 52
57.6
—— — 45 50 48
213.1 51 60 56
7.5 11
—— — 48 50 52
213.1 54 60 59
575 518 633 7 55 7 55 9.3 73 4 0.25 0.7
33.9
—— —
0.24
35 40 38
212.4 40 45 43
56.1
—— — 38 45 40
212.4 42 50 46
7.5 9
—— — 40 45 44
212.4 45 50 49
240
208/230 187 253 22.4 184 22.4 184 22.4 184 4 0.25 1.5
3.7 10.6/ 9.6
—— —
0.5
94/ 93 100/100 102/101
2 1 5.9 106/105 125/125 116/115
5 16.7/15.2
— — — 101/ 99 110/100 109/107
2 1 5.9 112/111 125/125 123/121
7.5 24.2/22
— — — 108/106 125/125 118/115
2 1 5.9 120/118 125/125 131/129
10 30.8/28
— — — 117/113 125/125 125/122
2 1 5.9 129/125 150/150 139/136
460 414 506 10.7 90 10.7 90 10.7 90 4 0.25 0.7
3.7 4.8
—— —
0.3
45 50 49
213.1 52 60 56
57.6
—— — 48 50 52
213.1 54 60 59
7.5 11
—— — 52 60 56
213.1 58 60 63
10 14
—— — 55 60 60
213.1 62 70 67
575 518 633 9.3 73 9.3 73 9.3 73 4 0.25 0.7
56.1
—— —
0.24
42 50 46
212.4 47 50 51
7.5 9
—— — 45 50 49
212.4 50 50 55
10 11
—— — 47 50 51
212.4 52 60 57
300
208/230 187 253 47.1 245 47.1 245 — — 6 0.25 1.5
5 16.7/15.2
—— —
0.5
137/135 175/175 144/142
2 1 5.9 148/147 175/175 157/155
7.5 24.2/22
— — — 144/142 175/175 152/150
2 1 5.9 156/154 200/200 166/163
10 30.8/28
— — — 151/148 175/175 160/157
2 1 5.9 163/160 200/200 173/170
460 414 506 19.6 125 19.6 125 — — 6 0.25 0.7
57.6
—— —
0.3
59 60 62
213.1 65 80 69
7.5 11
—— — 62 80 66
213.1 69 80 73
10 14
—— — 65 80 69
213.1 72 90 77
575 518 633 15.8 100 15.8 100 - - 6 0.25 0.7
56.1
—— —
0.24
49 60 52
212.4 54 60 57
7.5 9
—— — 52 60 55
212.4 57 60 60
10 11
—— — 54 60 57
212.4 59 60 63
FLA — Full Load Amps MCA — Minimum Circuit Amps
HACR — Heating, Air Conditioning and MOCP— Maximum Overcurrent Protection
Refrigeration NEC — National Electrical Code
IFM — Indoor (Evaporator) Fan Motor OFM — Outdoor (Condenser) Fan Motor
LRA — Locked Rotor Amps RLA — Rated Load Amps
MCA — Minimum Circuit Amps
= 100 x
max voltage deviation from average voltage
average voltage
Average Voltage =
452 + 464 + 455
3
=
1371
3
=
457
% Voltage Imbalance = 100 x
7
457
= 1.53%
581A155-300
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