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ELECTRICAL DATA — 579F180-300
UNIT
NOMINAL
VOLTAGE
(60 Hz)
VOLTAGE
RANGE
COMPRESSOR
OFM IFM
POWER
EXHAUST
COMBUSTION
FAN MOTOR
POWER SUPPLY
NO. 1 NO. 2
Min Max RLA LRA RLA LRA Qty Hp
FLA
(ea)
FLA FLA LRA FLA MCA MOCP†
180
(15
Tons)
208/230
(3 phase)
187 254 61.0 266 — — 3
1
⁄
2
1.70 10.5/10.5
— — 0.57 92/92 150/150
4.6 18.8 0.57 96/96 150/150
460
(3 phase)
414 508 28.0 120 — — 3
1
⁄
2
0.80 4.8
— — 0.30 42 70
2.3 6.0 0.30 45 70
216
(18
Tons)
208/230
(3 phase)
187 254 35.6 198 28.2 160 3
1
⁄
2
1.70 15.8/15.8
— — 0.57 94/94 125/125
4.6 18.8 0.57 98/98 125/125
460
(3 phase)
414 508 17.8 99 14.1 80 3
1
⁄
2
0.80 7.9
— — 0.30 47 60
2.3 6.0 0.30 49 60
240
(20
Tons)
208/230
(3 phase)
187 254 35.6 198 35.6 198 2 1 5.50 25.0/25.0
— — 0.57 116/116 150/150
4.6 18.8 0.57 121/121 150/150
460
(3 phase)
414 508 17.8 99 17.8 99 2 1 2.80 13.0
— — 0.30 59 70
2.3 6.0 0.30 61 70
300
(25
Tons)
208/230
(3 phase)
187 254 43.6 228 43.6 228 2 1 5.50 28.0/28.0
— — 0.57 137/137 175/175
4.6 18.8 0.57 142/142 175/175
460
(3 phase)
414 508 22.1 114 22.1 114 2 1 2.80 14.6
— — 0.30 70 90
2.3 6.0 0.30 72 90
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
*Used to determine minimum disconnect size per NEC.
†Fuse or HACR circuit breaker.
036-150 Only 180-300 Only 180-300 Only
036-072 Only 090-150 Only
NOTES:
1. In compliance with NEC requirements for multimotor and combina-
tion load equipment (refer to NEC Articles 430 and 440), the over-
current 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
voltage imbalance.
% Voltage Imbalance
max voltage deviation from average voltage
= 100 x
average voltage
EXAMPLE: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
452 + 464 + 455
Average Voltage =
3
1371
=
3
= 457
Determine maximum deviation from average voltage.
(AB) 457 - 452=5v
(BC) 464 - 457=7v
(AC) 457 - 455=2v
Maximum deviation is 7 v.
Determine percent voltage imbalance.
7
% Voltage Imbalance = 100 x
457
= 1.53%
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.
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