Other Auxiliary Heat Sources - Gree Versati III GRS-CQ4.0Pd/NhH2-E Owner's Manual

Air-to-water Heat Pump Split Versati
• 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 floor 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 floor heating) from the main board to the 3-way valve
• (N): Neutral signal from the main board to the 3-way valve

13. Other Auxiliary Heat Sources

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.
Step 1. Other thermal installation
Step 2. Electric wiring work
Other thermal L and N connect to XT3~1,2
XT3
3-Way
Valve 1
WARNING
XT3
Other
thermal
30
SPLIT TYPE