Daikin FXHQ63AVEB8 Installer And User Manual page 8

2 | General safety precautions
Installer and user reference guide
8
WARNING
ALWAYS recover the refrigerant. Do NOT release them directly into the environment.
Use a vacuum pump to evacuate the installation.
WARNING
Make sure there is no oxygen in the system. Refrigerant may ONLY be charged after
performing the leak test and the vacuum drying.
Possible consequence: Self-combustion and explosion of the compressor because of
oxygen going into the operating compressor.
NOTICE
▪
To avoid compressor breakdown, do NOT charge more than the specified amount
of refrigerant.
▪
When the refrigerant system is to be opened, refrigerant MUST be treated
according to the applicable legislation.
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.
NOTICE
After all the piping has been connected, make sure there is no gas leak. Use nitrogen
to perform a gas leak detection.
▪ In case recharge is required, see the nameplate or the refrigerant charge label of
the unit. It states the type of refrigerant and necessary amount.
▪ Either if the unit is factory charged with refrigerant or the unit is non-charged,
you might need to charge additional refrigerant, depending on the pipe sizes and
pipe lengths of the system.
▪ ONLY use tools exclusively for the refrigerant type used in the system, this to
ensure pressure resistance and prevent foreign materials from entering into the
system.
▪ Charge the liquid refrigerant as follows:
If
A siphon tube is present
(i.e., the cylinder is marked with "Liquid
filling siphon attached")
A siphon tube is NOT present
▪ Open refrigerant cylinders slowly.
Then
Charge with the cylinder upright.
Charge with the cylinder upside down.
FXHQ-A
VRV system air conditioner
4P715928-1 – 2022.11