Optional Electric Heater - Gree GRS-CQ4.0Pd/NhG3-E Owner's Manual

Air-to-water Heat Pump
Step 2. Electric wiring work
Other thermal L and N connect to XT3~1,2.
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).

13. Optional Electric Heater

Optional electric heater is allowed for the equipment and controlled in such a way when outdoor temperature is
lower than the set point for startup of the optional electric heater.
Step 1. Optional electric heater installation
Optional electric heater should be installed with monobloc unit in series.Moreover,an accessory called optional
water temperature sensor(5 meter length) shall be installed at the same time.The optional electric heater could be
1group or 2 group, and only works fo space heating.
Optional water temperature sensor
CN16
AP1
28
MONOBLOC TYPE