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A Series Inverter Modular Air-cooled Chiller (Heat Pump)
(3) LSQWRF130VM/NhA-M
Note: the output control lines of the AC contactors for the auxiliary electric heater 1, auxiliary electric
heater 2 can be wired to the corresponding wiring board of all units, while those for the error indicator and
external passive contact switch should be wired to the corresponding wiring board of all units.
Unit 1
73
When one auxiliary electric heater serves more than one modules, its wiring terminals
73 and 74 are connected to terminals G and H respectively of an AC contactor marked
with KM3.
When multiple modules have direct control over one auxiliary electric heater, its AC
contactor is wired to an AC contactor (KM3 or KM4) of any one module.
Unit 2
74
73
74
G
H
KM3
Control output neutral line
Control output contactor (electric heater 2; 220V live line)
Control output neutral line
Control output contactor (electric heater 1; 220V live line)
Remote start/stop
Remote start/stop
Control output neutral line
Control output contactor (user water pump 2; 220V live line)
Control output neutral line
Control output contactor (user water pump 1; 220V live line)
Control output neutral line
Control output contactor
Control output neutral line
Control output contactor
Unit 3
73
74
Unit 1~16
73
74
KM3
23
(error indicator; 220V live line)
(running indicator; 220V live line)
73
74
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