Gree Versati III Owner's Manual page 32

Air-to-water Heat Pump
Monobloc Unit
Step 2. Electric wiring work
Other thermal L and N connect to XT3~21,22.
Optional water temperature sensor connecet to AP1 CN16.
Step 3. Wired controller setting
Other thermal should be selected "with" if necessarily from COMMISION → FUNCTION,then set switch on
(outdoor)temperature and control logic(1/2/3).
Other
Thermal
Optional
Water Temp.
Sensor
3-Way
Valve 2
21 22
L N
Other Thermal
CN16
AP1
28
2-Way
Valve 1
Mixing
Floor
Valve
Temp.
Water Pump
Tank Temp. of
Heat pump system
Water Tank EH
Water Tank
optional water temperature senso r
MONOBLOC TYPE