Panasonic WH-MHF09G3E5 Service Manual page 47

Heat Mode Operation Time Chart
12.1.3 Tank Mode Operation
Control contents:

3 ways valve direction
3 ways valve switch to tank side during Tank Thermo ON condition. Switch 3 ways valve to room side when
o
tank achieve Tank Thermo OFF temperature and SOLAR turn ON condition.

Heat Pump Thermostat characteristic
Water set temperature = Tank set temperature or [60°C] whichever lower.
o
Heat pump Water Outlet set temperature is set to [63°C] at tank mode.
o

Tank Thermo ON/OFF characteristic
THERMO OFF TEMP:
o
1. THERMO OFF TEMP = Tank water set temperature + [0°C].
2. Tank temperature > THERMO OFF TEMP for continuous 10 seconds after heat pump OFF, water pump
OFF or
3. Tank temperature > Tank set temperature + [2°C] for continuously 20 seconds.
THERMO ON TEMP:
o
1. THERMO ON TEMP = Tank water set temperature + [-8°C].
When detect tank temperature < THERMO ON TEMP, water pump ON for 3 minutes then heat pump ON.
Characteristic of heat pump thermo ON/OFF under Tank Mode condition:

Water Outlet Thermo Condition
Heat pump THERMO OFF TEMP:
o
1. Heat pump THERMO OFF TEMP = 63°C + [+4°C].
2. Water outlet temperature > Heat pump THERMO OFF TEMP for continuous 3 minutes, heat pump OFF.
Heat pump THERMO ON TEMP:
o
1. Heat pump THERMO ON TEMP = Water inlet during thermo OFF time + [-3°C].
2. Heat pump ON back when water outlet temperature < Heat pump THERMO ON TEMP.
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