Checklist During Commissioning - Daikin VRV 5 RXYA8A7Y1B Installer And User Manual

22.4 Checklist during commissioning

RYMA5+RXYA8~20A7Y1B
VRV 5 heat pump
4P749918-1 – 2023.12
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
components" [ 4 132]. Be sure that neither a fuse nor a protection device has been
bypassed.
Internal wiring
Visually check the switch 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.
Additional refrigerant charge
The amount of refrigerant to be added to the unit shall be written on the included "Added
refrigerant" plate and attached to the rear side of the front cover.
Requirements for R32 equipment
Make sure the system meets all requirements that are described in the following chapter:
"3.1 Instructions for equipment using R32
Field settings
Make sure all field settings you want are set. See
Field setting [2-54] (direct connection to the outdoor unit)
In case of a system with at least one indoor unit that has a direct connection to the outdoor
unit, make sure to change field setting [2-54] from 0 to 1. See "[2‑54]" [
Installation date and field setting
Be sure to keep record of the installation date on the sticker on the rear of the upper front
panel according to EN60335‑2‑40 and keep record of the contents of the field setting(s).
To perform a SV unit test run. See the SV unit installation manual for more information.
To perform a test run.
22 Commissioning
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"20.1.6 Specifications of standard wiring
4
refrigerant" [ 18].
"21.1 Making field settings" [
4
Installer and user reference guide
4
141].
154].
165