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3.4. Commissioning the heat pump after Installation

WARNING: Please check all the wiring carefully before turning on the heat pump.

3.4.1 Inspection Before First Trial Run

Before performing initial functional test, confirm below items and write √ in block;



Correct unit installation



Power supply voltage is the same as unit rated voltage



Correct piping and wiring



Air inlet & outlet port of unit are unblocked



Drainage and venting are unblocked and there are no water

leaks



GFCI Breaker / Current Leakage protector are working (If

required by local regulations)



Ground wire / bonding wire are connected correctly

3.4.2 Trial Run

Step 1: Run test can begin after completing the installation;

Step 2: All wiring and piping should be connected well and carefully checked, then start circulating

the water before power is switched on;

Step 3: Empty all air within the water circulation pipes, then press the “on-off” button on the control

panel to run the unit at the temperature setting;

Step 4: Items that need to be checked during the commissioning test:

① Check that unit current is normal per nameplate specifications;

② Check that each button on the control panel functions normally;

③ Check that the screen is displaying information normally and that there are no error codes;

④ Check for any water leaks in the circulation system;

⑤ Check that the Condensate drain is not obstructed;

⑥ Check for any abnormal sounds or vibrations?

⑦ Check that heat pump shuts off on a water flow error as soon as the water pump is turned

off

Nirvana DISTINCTION SIM55 User Manual

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