Unical ENERPUMP DHW 110, Installation And Service Manual

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Luxury Air Source Heat Pump-Monobloc System 38
Pre-operation checks
Checks before initial start-up
SWITCH OFF THE POWER SUPPLY BEFORE MAKING ANY CONNECTIONS.
After the installation of the unit, check the following before switching on the circuit breaker:
1. Field wiring
Make sure that the field wiring between the local supply panel and domestic hot water tank has
been carried out according to the instructions, according to the wiring diagrams and according to
European and national regulations.
2. Fuses or protection devices
Check that the fuses or the locally installed protection devices are of the size and type specified.
Make sure that neither a fuse nor a protection device has been bypassed.
3. Earth wiring
Make sure that the earth wires have been connected properly and that the earth terminals are
tightened.
4. Internal wiring
Visually check the switch box on loose connections or damaged electrical components.
5. Fixation
Check that the unit is properly fixed, to avoid abnormal noises and vibrations when starting up the
unit.
6. Damaged equipment
Check the inside of the unit on damaged components or squeezed pipes.
7. Refrigerant leakage
Check the inside of the unit on refrigerant leakage. If there is a refrigerant leak, call your local
dealer.
8. Power supply voltage
Check the power supply voltage on the local supply panel. The voltage must correspond to the
voltage on the identification label of the unit.
9. Air purge valve
Make sure the air purge valve is open (at least 2 turns).
10. Pressure relief valve
Check if the backup heater vessel is completely filled with water by operating the pressure relief
valve. It should purge water instead of air.
OPERATING THE SYSTEM WITH THE BACKUP HEATER VESSEL NOT COMPLETELY FILLED WITH
WATER WILL DAMAGE THE BACKUP HEATER!
11. Shut-off valves
Make sure that the shut-off valves are correctly installed and fully open.
OPERATING THE SYSTEM WITH CLOSED VALVES WILL DAMAGE THE PUMP!