Precautions When Connecting The Refrigerant Piping; Multiple Outdoor Units: Knockout Holes - Daikin VRV IV Q+ Series Installer And User Reference Manual

18.2.2 Precautions when connecting the refrigerant piping

18.2.3 Multiple outdoor units: Knockout holes

RXYQQ8~20U7Y1B
VRV IV Q+ series heat pump
4P546229-1A – 2020.10
NOTICE
Make sure refrigerant piping installation complies with applicable legislation. In
Europe, EN378 is the applicable standard.
NOTICE
Make sure the field piping and connections are NOT subjected to stress.
WARNING
During tests, NEVER pressurize the product with a pressure higher than the
maximum allowable pressure (as indicated on the nameplate of the unit).
WARNING
Take sufficient precautions in case of refrigerant leakage. If refrigerant gas leaks,
ventilate the area immediately. Possible risks:
▪
Excessive refrigerant concentrations in a closed room can lead to oxygen
deficiency.
▪
Toxic gas might be produced if refrigerant gas comes into contact with fire.
WARNING
ALWAYS recover the refrigerant. Do NOT release them directly into the environment.
Use a vacuum pump to evacuate the installation.
▪ Only use phosphoric acid deoxidised seamless copper.
NOTICE
After all the piping has been connected, make sure there is no gas leak. Use nitrogen
to perform a gas leak detection.
Connection
Front connection
Bottom connection
Description
Remove the front plate knockout holes to connect.
Remove the knockout holes on the bottom frame and
route the piping under the bottom.
18 Piping installation
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Installer and user reference guide
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