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In the heating mode, since the unit will attenuate with the decrease of the ambient temperature, in the
area where the outdoor outdoor ambient temperature is at the end of the winter, the user is strongly
required to add an auxiliary electric heater on the hot water side, otherwise the user's use effect will be
affected.
■ Pump operation control
In order to ensure the normal operation of the unit, it is necessary to use the pump and unit linkage
control. The chilled water pump linkage control contact is provided in the unit control cabinet (only 220V
output control signal is provided, and the pump control part is provided by the user). When the unit is in
the standby state, the water pump does not start. When the standby state enters the working state, the
water pump is started first, and when the machine is switched from the working state to the standby state
or when the machine is shut down, the water pump is automatically stopped after the operation is
completed.
The choice of pump should meet the requirements of the unit: the water flow and the nominal value
of the nameplate should not exceed ± 30%.
■ End linkage control
Pass the passive normally open contact of the end controller (open when the end is not activated
and closed when the end is started) to the main module linkage contact (LINE, OV). When the unit is in
the power-on state, when at least one end is started, the unit starts automatically. When all the ends are
closed, the unit delay automatically turns off. If the unit does not use the end linkage control, LINE and
OV should be shorted.
■ Overload protection control
In the unit control cabinet, the pump overload protection control contact and the auxiliary electric
heating overload protection control contact are provided (only 220V output control signal is provided,
and the passive thermal relay for overload protection is provided by the user). The normally closed
contact of the passive thermal relay is connected to the overload protection control contact. When the
current is too large, the thermal relay protection is disconnected, and the unit alarm stops. If the unit
does not use overload protection control, the overload protection control contact should be shorted.
Note: air conditioning side pump overload control contact (OV-P1, N), hot water side pump overload
control contact (OV-P2, N), air conditioning side auxiliary electric heating overload control contact
(OV-H1, N), hot water side Auxiliary electric heating overload control contacts (OV-H2, N).
4.3 Other
■ Electrical parameter
Unit Type
Rated current
CA0065EANR
Note: The working voltage of the unit must be within ± 10% of the rated working voltage. If the wiring
distance of the power supply line is too long, the power cable diameter should be increased. It is
recommended to refer to the technical information of the cable manufacturer under the guidance of a
professional electrician.
■ DIP switch definition description and address setting
◆ BM1 DIP switch definition description
model
CA0065EANR
The first four digits of the BM1 eight-digit DIP switch are set for the module address. The first four digits
of the dialing code are all OFF. The module can only have one host in the system, and the address of
each module can not be the same (1st ~ 4 bits are selected for the module machine address):
Maximum current
32A
60A
DIP1
DIP2
DIP3
Module address setting
/
/
WARNING
Starting current
15A
BM1
DIP4
DIP5
Single
cold / heat
pump
/
/
OFF
20
Reference cable cross section
5X10mm
DIP6
DIP7
Refrigerant
Model setting
R22/ R410A
OFF
OFF
DIP8
selection
OFF
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