55
Characteristic of heat pump thermo ON/OFF under tank side condition
Water Outlet Thermo condition
o
Heat pump THERMO OFF TEMP:
1. Heat pump THERMO OFF TEMP = 63°C + [+4°C]
2. Water outlet temperature > Heat pump THERMO OFF TEMP for continuous 90 seconds, heat pump
OFF but water pump continue ON.
o
THERMO ON TEMP:
1. THERMO ON TEMP = Water inlet temperature, when heat pump thermo OFF + [-3°C].
Water Inlet Thermo condition
o
Heat pump THERMO OFF TEMP:
1. Water inlet temperature > [65°C] for continuous 60 seconds, heat pump OFF.
o
THERMO ON TEMP:
1. THERMO ON TEMP = Water inlet temperature < [65°C]
Solar Operation Condition (Only during solar priority is set condition)
When solar pump ON, tank heat-up interval end early and 3 ways valve switch to room side.
o
THERMO IN TEMP:
1. THERMO ON TEMP = Heat pump tank target tempe [-8°C].
2. After heating heat-up interval, always detect tank temperature. Switch to next tank heat-up interval when
tank temperature < THERMO ON TEMP and solar 3 way valve OFF.
o
Tank interval will end and start heating interval timer, IF
1. Tank interval timer finish
AND
External Room Thermo ON
OR
Only when this condition occur at tank side before tank temperature thermo OFF switch to room side
compulsory and continue until complete room heat-up interval and switch back to tank side.
2. Fulfill Tank thermo OFF condition.
3. Backup heater control:
o
During heating heat-up interval.
Follow normal back up heater control operation.
o
During tank heat-up interval.
Back up heater OFF during this interval.
4. Booster heater control:
o
During heating heat up interval.
Booster heater ON/OFF according to booster heater operation control.
o
During tank heat-up interval.
Once switch from heating heat-up interval to tank heat-up interval, turn OFF the booster heater
and start counting the BOOSTER HEATER DEPLAY TIMER.
Booster heater turn ON after BOOSTER HEATER DELAY TIMER fulfill and tank temperature
lower than tank set temperature.
BOOSTER HEATER DELAY TIMER is clear when switch to heating heat-up interval.
5. Solar 3 way valve
o
Solar 3WV operates follow solar operates specification.
* Under solar priority is set condition, when solar 3WV is ON, booster heater turn OFF.
* Under solar priority is not set condition, solar 3WV only can ON during heating heat-up interval.
6. 2 way valve opens.
Содержание WH-MHF09G3E8
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