Panasonic WH-SDC0305J3E5 Installationshandbuch Seite 31

21. Force Defrost
Under manual code, user can turn on force defrost through quick menu.
If selection is 'auto', outdoor unit will run defrost operation once if heat pump have
long hour of heating without any defrost operation before at low ambient condition.
(Even auto is selected, user still can turn on force defrost through quick menu)
22. Defrost signal
Defrost signal sharing same terminal as bivalent contact in main board. When defrost
signal set to YES, bivalent connection reset to NO. Only one function can be set between
defrost signal and bivalent.
When defrost signal set to YES, during defrost operation is running at outdoor unit defrost
signal contact turn ON. Defrost signal contact turn OFF after defrost operation end.
(Purpose of this contact output is to stop indoor fan coil or water pump during defrost
operation).
23. Pump fl owrate
If pump fl owrate setting is ∆T, unit adjust pump duty to get diff erent of water inlet
and outlet base on setting on * ∆T for heating ON and * ∆T for cooling ON in
operation setup menu during room side operation.
If pump fl owrate setting is set to Max. duty, unit will set the pump duty to the set duty
at *Pump maximum speed in service setup menu during room side operation.
3-4. Operation Setup
Heat
24. Water temp. for heating ON
Set target water temperature to operate heating operation.
Compensation curve: Target water temperature change in conjunction with
outdoor ambient temperature change.
Direct: Set direct circulation water temperature.
In 2 zone system, zone 1 and zone 2 water temperature can be set separately.
25. Outdoor temp. for heating OFF
Set outdoor temp to stop heating.
Setting range is 5°C ~ 35°C
26. T for heating ON
Set temp difference between out temp & return temp of circulating water of
Heating operation.
When temp gap is enlarged, it is energy saving but less comfort. When the
gap gets smaller, energy saving effect gets worse but it is more comfortable.
Setting range is 1°C ~ 15°C
Initial setting: Manual
Initial setting: No
Initial setting: ∆T
Initial setting: compensation curve
Initial setting: 24°C
Initial setting: 5°C
System setup
Circulation liquid
Heat-Cool SW
Force heater
Force defrost
Select
System setup
Heat-Cool SW
Force heater
Force defrost
Defrost signal
Select
System setup
Force heater
Force defrost
Defrost signal
Pump fl owrate
Select
55°C
Hot water temperature
35°C
-5°C
compensation curve
ON
24°C
Out
Return
Out — Return = 1°C ~ 15°C
12:00am,Mon
Confi rm
12:00am,Mon
Confi rm
12:00am,Mon
Confi rm
Decide temperature
of 4 points as shown
in diagram
Outdoor
15°C
temperature
OFF
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