98
o
During Tank heat-up interval
Tank interval is the first mode running when heat + 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 heating heat-up interval
Follow normal room heater control operation.
4 Tank heater control:
o
During heating heat-up interval
If External tank heater is select.
External heater ON/OFF according to external tank heater operation control.
If internal tank heater is select.
Internal tank heater will not function under heating heat-up interval.
o
During tank heat-up interval
If External tank heater is select.
Once heating heat-up interval switched to tank heat-up interval, tank heater is turn OFF and tank
heater delay timer will start counting.
Tank heater will turn ON after tank heater delay timer is fulfill and tank temperature is lower than
tank set temperature.
Tank heater delay timer is clear when switching to heating heat-up interval.
If internal tank heater is select.
Internal tank heater will turn ON after heat punp 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.
13.1.11 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)
