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Note: the output control lines of the AC contactors for the running indicator, water pump 1,
water pump 2, auxiliary electric heater 1, auxiliary electric heater 2 can be wired to the
corresponding wiring board of any one unit, while those for the error indicator and external
passive contact switch should be wired to the corresponding wiring board of all units as shown
in the figure below.
A Series Modular-type Air-cooled (Heat Pump) Chiller
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