![background image](http://html.mh-extra.com/html/daikin/vrv-iv/vrv-iv_installer-and-user-reference-manual_502233010.webp)
1
|
General safety precautions
Installer and user reference guide
10
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ heat pump
4P546228-1A – 2019.10
DANGER: RISK OF EXPLOSION
Pump down – Refrigerant leakage.
If you want to pump down the system, and there
is a leak in the refrigerant circuit:
▪
Do NOT use the unit's automatic pump down function, with which you can collect
all refrigerant from the system into the outdoor unit.
Possible consequence:
Self-
combustion and explosion of the compressor because of air going into the
operating compressor.
▪
Use a separate recovery system so that the unit's compressor does NOT have to
operate.
WARNING
ALWAYS recover the refrigerant. Do NOT release them directly into the environment.
Use a vacuum pump to evacuate the installation.
NOTICE
After all the piping has been connected, make sure there is no gas leak. Use nitrogen
to perform a gas leak detection.
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.
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.
▪
In case recharge is required, see the nameplate of the unit. It states the type of
refrigerant and necessary amount.
▪
The unit is factory charged with refrigerant and depending on pipe sizes and pipe
lengths some systems require additional charging of refrigerant.
▪
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
Then
A siphon tube is present
(i.e., the cylinder is marked with "Liquid
filling siphon attached")
Charge with the cylinder upright.
A siphon tube is NOT present
Charge with the cylinder upside down.
▪
Open refrigerant cylinders slowly.
Summary of Contents for VRV IV+
Page 165: ......
Page 166: ......
Page 167: ......
Page 168: ...4P546228 1A 2019 10 Copyright 2018 Daikin Verantwortung für Energie und Umwelt ...