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Due to our policy of continuous product innovation, some specifications may change without notification.
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LG
Air-Cooled Cooling Only Inverter Scroll Chiller Installation and Owners Manual
WARNING
•
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state, and National Electrical Code (NEC) regulations related to electrical equipment and wiring, and following the instructions in this manu-
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• Undersized wiring will lead to unacceptable voltage and will cause a fire, which will cause bodily injury or death.
• Ensure that all power wiring / communication cables are properly terminated and firmly attached. If power wires and communication cables
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•
Do not install the wiring in reversed phase or missed phase. Connect all wires appropriately. If the system operates in reversed phase
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•
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place before any power wiring is done to the system. Failure to do so will cause bodily injury or death.
• Be sure that main power to the unit is completely off before proceeding. Follow all safety and warning information outlined at the beginning
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•
Never touch any power lines or live cables before all power is cutoff to the system. To do so, will cause bodily injury or death.
•
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• Properly ground the chillers.
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•
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-
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•
Do not install the wiring in reversed phase or missed phase. Connect all wires appropriately. If the system operates in reversed phase
or missed phase, it will damage the compressors and other components.
•
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-
ing system. Failure to properly provide a NEC-approved earth ground can result in property damage and equipment malfunction.
•
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components.
Tons
Model No.
Voltage Frequency
(Hz)
Voltage Tolerance
(Min. ~ Max.)
MCA
MFA
Compressor
Chiller Fan
Motor
Input Power
MSC
RLA
kW
FLA
kW
20
ACAH020HETB
460
60
414 ~ 506
31
40
9.7
24.9
1.8
5
21.5
Table 26: Electrical Data for Single 460V Cooling Only Chiller.
Voltage Range: Power supplied to the chiller must fall within the voltage minimum to
maximum range listed in the table above. The chiller will not operate normally if the power
supply voltage falls below or above the tolerance range.
Maximum allowable voltage variance permitted between phases is 2%.
MCA: Minimum Circuit Ampacity (A) (Criteria used to select the wiring standard).
MFA: Maximum Fuse Amps (A) (Criteria used to select circuit breaker and ground error
circuit breaker [electricity leakage circuit breaker]).
MSC: Maximum Start Current (A)
RLA: Rated Load Amps (A) (Current required when operating under the following
conditions
—
Cooling: Outdoor Air Temperature: 8
°
1F DB / 66
°
F WB; Water Inlet / Outlet
Temperature: 54
°
F / 44
°
F).
FLA: Full Load Amps (A).
Chiller Electrical Data
General Precautions
ELECTRICAL
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