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Buffer tank + Solar
Outdoor
This is an application that connects the buffer tank to the indoor unit before connecting to the solar water heater to heat up the tank.
Buffer tank's temperature is detected by buffer tank thermistor (specifi ed by Panasonic).
Solar panel's temperature is detected by solar thermistor (specifi ed by Panasonic).
Buffer tank shall use tank with built-in solar heat exchange coil independently.
During winter season, solar pump for circuit protection will be activated continuously. If does not want to activate the solar pump operation,
please use glycol and set the anti-freezing operation start temperature to -20°C.
Heat accumulation operates automatically by comparing the temperature of tank thermistor and solar thermistor.
This system requires optional PCB (CZ-NS4P).
Boiler connection
Outdoor
Indoor
This is an application that connects the boiler to the indoor unit, to compensate for insuffi cient capacity by operate boiler when outdoor
temperature drops & heat pump capacity is insuffi cient.
Boiler is connected parallel with heat pump against heating circuit.
There are 3 modes selectable by remote controller for boiler connection.
Besides that, an application that connects to the DHW tank's circuit to heat up tank's hot water is also possible.
(Operation setting of boiler shall be responsible by installer.)
This system requires optional PCB (CZ-NS4P).
Depending on the settings of the boiler, it is recommended to install buffer tank as temperature of circulating water may get higher. (It must
connect to buffer tank especially when selecting Advanced Parallel setting.)
Panasonic is NOT responsible for incorrect or unsafe situation of the boiler system.
Make sure the boiler and its integration in the system complies with applicable legislation.
Make sure the return water temperature from the heating circuit to the indoor unit does NOT exceed 55°C.
Boiler is turned off by safety control when the water temperature of the heating circuit exceed 85°C.
2 How to fi x cable
Connecting with external device (optional)
•
All connections shall follow to the local national wiring standard.
•
It is strongly recommended to use manufacturer-recommended parts and accessories for installation.
•
For connection to main PCB 4
1. Two-way valve shall be spring and electronic type, refer to "Field Supply Accessories" table for details. Valve cable shall be (3 x min 1.5 mm
of type designation 60245 IEC 57 or heavier, or similarly double insulation sheathed cable.
* note: - Two-way Valve shall be CE marking compliance component.
- Maximum load for the valve is 9.8VA.
2. Three-way valve shall be spring and electronic type. Valve cable shall be (3 x min 1.5 mm
or similarly double insulation sheathed cable.
* note: - Shall be CE marking compliance component.
- It shall be directed to heating mode when it is OFF.
- Maximum load for the valve is 9.8VA.
3. Room thermostat cable must be (4 or 3 x min 0.5 mm
sheathed cable.
4. Maximum output power of booster heater shall be ≤ 3 kW. Booster heater cable must be (3 x min 1.5 mm
57 or heavier.
Indoor
Buffer tank
Solar pump
Mixing valve
Buffer tank
Mixing
valve
Boiler
WARNING
CAUTION
2
), of type designation 60245 IEC 57 or heavier cord, or similarly double insulation
Solar thermistor
Pump
Thermistor
Floor heating
Pump
Thermistor
Floor heating
2
), of type designation 60245 IEC 57 or heavier,
Setting of remote controller
Installer setting
System setup
Optional PCB connectivity - Yes
Buffer Tank connection - Yes
T for buffer tank
Solar connection - Yes
Buffer tank
T turn ON
T turn OFF
Antifreeze
Hi limit
Setting of remote controller
Installer setting
System setup
Optional PCB connectivity - Yes
Bivalent - Yes
Turn ON: outdoor temp
Control pattern
2
), of type designation 60245 IEC
2
),
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