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Step 2. Electric wiring work:
Other thermal L and N connect to XT3~21,22
Optional water temperature sensor connecet to AP1 CN16.
optional water temperature sensor
CN16
AP1
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).
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