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AIR-TO-WATER HEAT PUMP
set as 1, there is FCU (FAN COIL UNIT) equipped in the water system. In this case，
2-way value should be installed and connected to the indoor PCB. Otherwise， the unit
will operate abnormally.
Function code 18 ：Remote air temperature sensor
If code 18 is set as 0, the remote air temperature sensor is not equipped. The unit can
only be operated according outflow water temperature. The value of code 1 is can not
be set as 1，otherwise the unit can not operate.
If code 18 is set as 1, the remote air temperature sensor is equipped. The unit can
operate according the set value of the code 1.
Function code 19 ：Heating operation level
If code 19 is set as 0，in space heating，the unit will be operated by high temperature
cycle. The setting value of outflow water temperature ranges from 25
high temperature cycle suitable for FCU or radiator is equipped in the water loop.
If code 19 is set as 1, in space heating，the unit will be operated by low temperature
cycle. The setting value of outflow water temperature ranges from 25
temperature cycle suitable for under-floor coil is equipped in the water loop.
Function code 20 ：Setting startup temperature of back-up heater（indoor
Set the outdoor air temperature when half capacity of electric heater starts operating.
Example : If Value is set as '-1'：
Half capacity of electric heater will start operating when outdoor air temperature is
below -1°... and current outflow water temperature or room air temperature is much
lower than target outflow water temperature or target room air temperature.
Function code 21 ：Setting maximum water tank temperature heated by heat
Set the maximum temperature generated by AWHP compressor cycle.
Example : If Value is set as '50'：
If the target water tank temperature is 60 ,
temperature is below 50 , the wa
water tank temperature is higher than 50℃ but lower than target water tank
temperature (in this case is 60 ), the water tank is heated by water heater in tank
Function code 22 ：Setting heating temperature of disinfection operation
Set the target temperature of disinfection operation.
Disinfection operation is special sanitary tank operation mode to kill and to prevent
growth of viruses inside the tank.
Before set this function, the value of code 6 should be set as 1.
Function code 23, 24: Setting the range of weather-dependent operation
Weather-dependent operation is that the unit automatically adjusts target
unit）
pump cycle
℃ and when the current water tank
℃
ter tank is heated by heat pump. When current
℃
14
CONTROL PANEL MENU
to 55
℃. The
℃
to 45
℃
℃，low
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