17
Electrical connection
Use cable (not less than 1.5m
2)
(not supplied) to
connect indoor and outdoor unit via control board
terminal connection .
Connecting indoor and outdoor unit
L N
L N
3 4
5
3 4
5
Outdoor unit
Indoor unit
Note:
Outdoor unit must be earthed before the wiring before
the unit is connected.
The wiring must be attached so that the terminal block
is not under stress
Connect Outdoor ambient temperature
sensor OT (6m) (B3)
One section of OT probe (B3) is inside the outdoor unit
control box. Other section of OT probe is inside the
indoor unit control box. Connect two section of OT
probe with its connector.
Temperature sensor for hot water:
The hot water sensor (B4) is connected to terminal
positions B4 and GND on the main board, the other
terminal must be put into hot water cylinder temperature
sensor probe inlet pocket if required.
If the hot water sensor cable runs close to power cables,
then a shielded cable should be used. If a conduit is
used then it should be sealed to avoid condensation
forming in the temperature sensor probe
．
Important:
Temperature sensor must be separated
(min 20 cm) from high voltage power cables to
avoid interference which will cause read temperature
fluctuating and heat pump can not work normally.
If the temperature sensor cable runs close to power
cables
，
shielded cable should be used .If a conduit is
used, it should be sealed to avoid condensation in the
outdoor temperature sensor probe
．
Indoor Side Inlet Water Temperature
Sensor:
The indoor side inlet water sensor (B1) from factory is
placed at inlet water pipe.
If a buffer tank is installed, the Inlet water temperature
sensor B1 can be moved to the buffer tank temperature
sensor inlet pocket and EV01 parameter value can
be set to “work by regulation”. This stops the pump
running when compressor is OFF.
If the Inlet water temperature sensor B1 can not be
moved to the buffer tank temperature sensor inlet,
the EV01 parameter value must be set to “continuous
work” (factory default setting). This allows the pump
to continue to run so Inlet water temperature sensor B1
read the same as butter tank water temperature.
Important:
All temperature sensor must be separated (min
200 mm) from high voltage power cables to avoid
interference which will cause read temperature
fluctuating and the heat pump may operate
incorrectly.
