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Thermo ON/OFF for Heat Pump in Tank Operation:
1) When tank temperature achieve heat pump OFF condition, refer below condition:
1) When tank temperature achieve heat pump OFF condition, refer below condition:
Condition 1: When Internal Tank Heater is select and Tank Heater ON
- Heat pump will turn OFF, water pump continue ON and room heater will continue ON if tank temperature
- Heat pump will turn OFF, water pump continue ON and room heater will continue ON if tank temperature
below tank heater thermo ON condition. 3 ways valve will only switch to room side after tank temperature
reach tank heater thermo OFF condition.
reach tank heater thermo OFF condition.
Condition 2: When Tank Heater select OFF OR when External Tank Heater is select and Tank heater ON
- If tank temperature achieve tank thermo OFF, heat pump turn OFF, water pump turn OFF, room heater OFF
- If tank temperature achieve tank thermo OFF, heat pump turn OFF, water pump turn OFF, room heater OFF
and 3 ways valve switch to room side.
2) When tank temperature achieve heat pump ON condition, water pump ON, heat pump ON and room heater turn
OFF.
Heat pump OFF condition at Tank Mode
a) Tank temperature > tank water set temperature continuously for 20 seconds after heat pump thermos OFF
due to water thermo. (Heat pump turn OFF but water pump continue ON and room heater turn ON to achieve
tank set temperature) OR
tank set temperature) OR
b) Tank temperature > tank set temperature + [1°C] for continuously 20 seconds. (Heat pump OFF, water pump
OFF, room heater OFF and 3 ways valve switch to room side)
Heat pump ON condition at Tank Mode
a) Tank temperature < tank water set temperature + R/C setting (Tank re-heat temp)
(Water pump turn ON OR continue ON, heat pump ON and 3 ways valve switch to tank side or maintain at
tank side)
tank side)
Internal heater control
- Internal heater only operates to tank side if the Internal Tank Heater is select, Tank heater ON and backup
heater is enable.
Internal heater turn ON condition:
1) Tank temperature < tank set temperature AND
2) Heat pump thermos OFF AND
3) 20 minutes from previous heater off AND
4) Internal tank heater selects USE from control panel.
1) Tank temperature < tank set temperature AND
2) Heat pump thermos OFF AND
3) 20 minutes from previous heater off AND
4) Internal tank heater selects USE from control panel.
Internal heater turn OFF condition:
1) Tank temperature > tank set temperature for continuously 15 seconds OR
2) Heat pump thermo ON OR
3) Mode change or operation is off by control panel.
1) Tank temperature > tank set temperature for continuously 15 seconds OR
2) Heat pump thermo ON OR
3) Mode change or operation is off by control panel.
External Heater control
- External heater only operate to tank side if tank heater ON & External Heater select.
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