Panasonic WH-SDF14C9E [57/125] Solar operation optional

12.14 Solar Operation (Optional)

12.14.1 Solar Operation

1 Control according to preset whether solar priority is set or not.

2 When tank connection is NOT set at SETTING mode, solar operation is disabled.

3 When Pump A (from solar pump station) is detected On through connection Y3 and Y4, then the Solar pump

3 Way Valve is requested ON (Refer to figure below).

12.14.2 Solar Operation Control

When solar priority is SET

1 Operation condition:

a Solar pump operates if all of the following conditions are fulfilled:

 Power On. (regardless operation ON or OFF)

 There is operation request from solar pump station.

 Tank hot water temp is below solar on upper limit temp [EEPROM 1 : 70]°C.

2 Stop condition:

a Solar pump stops operating when:

 No power supply to unit OR

 There is NO operation request from solar pump station OR

 Tank hot water temp is above solar off upper limit temp [EEPROM 2 : 77]°C.

* heatpump OFF OR operate to room side when solar pump operate during solar priority set.

* booster heater OFF when solar pump operate during solar priority set.

When solar priority is NOT SET

1 Operation condition:

a Solar pump operates if all of the following conditions are fulfilled:

 Power On. (regardless operation ON or OFF).