Air-to-water Heat Pump
27
MONOBLOC
TYPE
21 22 20
3-Way Valve 2
L1(OFF)
Heating System
L2(ON)
Water tank
N
WARNING
• The 3-way valve should select water tank loop when electric power is supplied to wire (OFF) and wire (N).
• The 3-way valve should select under oor loop when electric power is supplied to wire (ON) and wire (N).
• (ON): Line signal (Water tank heating) from the main board to the 3-way valve
• (OFF): Line signal (Under oor heating) from the main board to the 3-way valve
• (N): Neutral signal from the main board to the 3-way valve
12. Other Thermal
Other thermal is allowed for the equipment and controlled in such a way that the mainboard will output 230V
when outdoor temperature is lower than the set point for startup of the aother thermaluxiliary heat source.
Note: Other thermal and Optional Electric Heater CANNOT be installed at the same time.
Water Tank
Mixing
Valve
Water Pump
Floor
Temp.
Tank Temp. of
Heat pump system
3-Way
Valve 2
2-Way
Valve 1
Water Tank EH
Other
Thermal
Optional
Water Temp.
Sensor
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