Panasonic WH-SXC09H3E8 - Page 111

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12.1.9 Heat + Tank Mode Operation
1. 3 ways valve control:
- 3 ways valve switch to room side during room heat-up interval and switch to tank side during tank heat-up
interval. Both modes will switch alternately. Tank mode is the initial running mode of Heat + Tank mode.
2. Heat pump operation control:
a) During room heat-up interval
- Follow normal heating 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 temp < Tank thermos ON temp (Room heat-up interval ends)
Case 2:
[If heating operation at room side is less than 30 minutes and switch to tank side 3 times consecutively]
- Maintain at room heat-up 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 due to tank interval timer is complete]
- Maintain at room heat-up 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.
b) 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:
a) During heating heat-up interval
- Follow normal room heater control operation.
4. Tank heater control:
a) During heating heat-up interval
i. If External tank heater is select.
- External heater ON/OFF according to external tank heater operation control.
ii. If internal tank heater is select.
- Internal tank heater will not function under heating heat-up interval.
b) During tank heat-up interval
i. 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.
ii. 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.
c) 2 ways valve control is open
d) Indoor water pump control:
- Indoor water pump always turn ON if room heat pump thermo ON OR Tank thermo ON.