Panasonic WH-SDC09H3E8 Service Manual page 103

12.1.6.3 Zone Temperature Control Contents

During Standard System (Optional PCB not connected)
a) Only 1 zone temperature control is available
b) This zone room temperature is control by either one of the 4 room sensor (Room Th, Int/Ext Room
Thermostat, Water temperature)
c) Target Zone Water Temperature is calculated based on selected temperature control type (Compensation or
Direct) and selected room sensor. Target Water Temperature will set same as Target Zone Water
Temperature
d) Target Water Temperature is the temperature for heat pump to operate refer to indoor water outlet sensor.
e) Heat pump and water pump OFF when ROOM Thermo OFF (Zone thermo OFF by Room Th or Room
Thermostat).
* There will be no zone sensor connected to zone 1 (No zone sensor error), mixing valve and zone pump will not
operate.

During Extension System (Optional PCB connected)
1) Buffer Tank connection select "NO" &
One zone system is select
o
a) This zone room temperature control by either one of the 4 room sensor (Room Th, Int/Ext Room Thermostat,
Water temp.)
b) Target Zone Water Temperature calculate base on selected temperature control type (Compensation or
Direct) and selected room sensor.
c) Target Water Temperature will set same as Target Zone Water Temperature
d) Target Water Temperature is a temperature for heat pump to operate refer to indoor water outlet sensor.
e) Heat pump and water pump OFF when ROOM Thermo OFF (Zone thermo OFF by Room Th or Room
Thermostat).
* There will be no zone sensor connected to zone 1 (No zone sensor error), mixing valve and zone pump will not
operate.
2 zone system select
o
a) Each zone room temperature is control by each sensor which select from either one of the 4 room sensor
b) Target Zone 1 & 2 Water Temperature is calculated based on selected temperature control type
(Compensation or Direct) and selected room sensor.
* Zone Mixing Valve & Zone pump will operate to achieve Target Zone Water Temperature which refer to
zone sensor.
* Zone Sensor will detect if zone sensor is open or short.
c) Target Water Temperature will set same as the active & higher zone water temperature setting. (When
cooling mode, lower zone water temp setting)
d) Target Water Temperature is the temperature for heat pump to operate refer to indoor water outlet sensor.
e) Heat pump and water pump OFF when ROOM Thermo OFF (Both Zone thermo OFF by Room Th or Room
Thermostat).
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