Fisher FHIF-WHS-120CE3, Руководство по обслуживанию

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R32 ATW Service Manual
56
12.2 Pre-operation checks
After the installation of the unit, check the followings before powering on the units:

Field wiring: Make sure that the field wiring between the switch box and unit and valves (when
applicable), unit and room thermostat (when applicable), unit and domestic hot water tank, and
unit and backup heater box have been connected according to the instructions, according to the
wiring diagrams and to local laws and regulations.

Fuses, circuit breakers, or protection devices: Check that the circuit breaker or the locally
installed protection devices are of the size and type specified in the chapter 11 specifications.
Make sure that no fuses or protection devices have been bypassed.

Booster heater circuit breaker: Do not forget to turn on the booster heater circuit breaker (applies
only to units with optional domestic hot water tank installed).

Ground wiring: Make sure that the ground wires have been connected properly and that the
ground terminals are tightened.

Internal wiring: Visually check the EC box for loose connections or damaged electrical
components.

Mounting: Check that the unit is properly mounted, to avoid abnormal noises and vibrations
when starting up the unit.

Damaged equipment: Check the inside of the unit for damaged components or squeezed pipes.

Refrigerant leak: Check the inside of the unit for refrigerant leakage. If there is a refrigerant
leak, call your local dealer.

Power supply voltage: The power supply voltage must correspond to the voltage on the
identification label of the unit.

Air purge valve: Make sure the air purge valve is open (at least 2 turns).

Shut-off valves: Make sure that the shut-off valves are fully open
12.3 Water pump
The water pump in hydronic module is DC inverter type, and the water head is 9m. It will adjust
running speed automatically according to the temperature difference between water inlet and outlet
temperature of plate heat exchanger.