137
3 Room heater control:
o
During heating heat-up interval
Follow normal room heater control operation.
4 Tank heater control:
o
During heating heat-up interval
Internal tank heater will not function under heating heat-up interval.
o
During tank heat-up interval
Internal tank heater will turn ON after heat pump thermo off to boil tank temperature to tank set
temperature.
o
2 ways valve control is open
o
Indoor water pump control:
Indoor water pump always turn ON if room heat pump thermo ON
OR
Tank thermo ON.
14.1.11 Cool + Tank Mode Operation
1 3 ways valve control:
o
3 ways valve switch to room side during room cooling interval and switch to tank side during tank heat-
up interval. Both mode will switch alternately. Tank mode is the initial mode of cool + tank mode.
2 Heat pump operation control:
o
During room heat-up interval
Follow normal cooling operation.
Switching to tank side depends to below cases:
Case 1:
[Previous switch from tank interval to room interval due to thermo OFF]
Switch to tank heat-up interval when Tank temperature < Tank Thermo ON temperature (Room
interval will ends)
Case 2:
[If cooling operation at room side is less than 30 minutes and switch to tank side for 3 times
consecutively]
Maintain at room cooling interval regardless of the tank temperature. Switch to tank heat-up interval
only when (Room Interval Timer is complete
OR
Room heat pump thermo OFF)
AND
Tank
temperature < Tank thermo ON temperature.
Case 3:
[Previous switch from tank interval to room interval is due to tank interval timer is complete]
Maintain at room cooling interval regardless of the tank temperature. Switch to tank heat-up interval
only when (Room Interval Timer is complete
OR
Room heat pump thermo OFF)
AND
tank
temperature < Tank thermo ON temperature.
*Tank Thermo ON temperature:
Internal Tank Heater select USE
<Tank set tempe R/C setting (Tank re-heat temperature)
Others
<Tank water set tempe R/C setting (Tank re-heat temperature)
o
During Tank heat-up interval
Tank interval is the first mode running when the cool + tank mode is select.
Switch to room interval only when tank achieve tank thermo OFF
OR
tank heat-up interval timer is
complete.
Heat pump operates according to normal tank mode operation.
3 Room heater control:
o
During room cooling interval
Room heater is OFF and not operates.
4 Tank heater control:
o
During room cooling interval
Internal tank heater will not function under room cooling interval.
o
During tank heat-up interval
Internal tank heater will turn ON after heat pump thermos off to boil tank temperature to tank set
temperature.