Checklist Before Commissioning - Daikin VRV 5 S Series Installer And User Manual

23 | Commissioning

23.2 Checklist before commissioning

Installer and user reference guide
140
1 After the installation of the unit, check the items listed below.
2 Close the unit.
3 Power up the unit.
You have read the complete installation and operation instructions described in the
installer and user reference guide.
Installation
Check that the unit is properly installed, to avoid abnormal noises and vibrations when
starting up the unit.
Field wiring
Check that the field wiring has been carried out according to the instructions described in
the chapter Electrical installation, according to the wiring diagrams and according to the
applicable national wiring regulation.
Power supply voltage
Check the power supply voltage on the local supply panel. The voltage MUST correspond to
the voltage on the nameplate of the unit.
Earth wiring
Be sure that the earth wires have been connected properly and that the earth terminals are
tightened.
Insulation test of the main power circuit
Using a megatester for 500 V, check that the insulation resistance of 2 MΩ or more is
attained by applying a voltage of 500 V DC between power terminals and earth. NEVER use
the megatester for the interconnection wiring.
Fuses, circuit breakers, or protection devices
Check that the fuses, circuit breakers, or the locally installed protection devices are of the
size and type specified in the chapter Electrical installation. Be sure that neither a fuse nor
a protection device has been bypassed.
Internal wiring
Visually check the electrical component box and the inside of the unit for loose connections
or damaged electrical components.
Pipe size and pipe insulation
Be sure that correct pipe sizes are installed and that the insulation work is properly
executed.
Stop valves
Be sure that the stop valves are open on both liquid and gas side.
Damaged equipment
Check the inside of the unit for damaged components or squeezed pipes.
Refrigerant leak
Check the inside of the unit on refrigerant leakage. If there is a refrigerant leak, try to repair
the leak. If the repair is unsuccessful, call your local dealer. Do not touch any refrigerant
which has leaked out from refrigerant piping connections. This may result in frostbite.
Oil leak
Check the compressor for oil leakage. If there is an oil leak, try to repair the leak. If the
repairing is unsuccessful, call your local dealer.
Air inlet/outlet
Check that the air inlet and outlet of the unit is NOT obstructed by paper sheets,
cardboard, or any other material.
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600330-1D – 2023.02