Defrost Signal; Pump Flowrate; Operation Setup; Water Temp. For Heating On - Panasonic WH-ADC0309J3E5UK Installation Manual

20. 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).
21. Pump fl owrate
If pump fl owrate setting is T, unit adjust pump duty to get different 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

22. 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.
23. Outdoor temp. for heating OFF
Set outdoor temp to stop heating.
Setting range is 5°C ~ 35°C
24. ∆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: No
Initial setting: T
Initial setting: compensation curve
Initial setting: 24°C
Initial setting: 5°C
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
Decide temperature
of 4 points as shown
in diagram
Outdoor
15°C
temperature
OFF
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