Connecting The Refrigerant Piping; About Connecting The Refrigerant Piping; Precautions When Connecting The Refrigerant Piping - Daikin VRV IV W+ Series Installer And User Reference Manual

18.3 Connecting the refrigerant piping

18.3.1 About connecting the refrigerant piping

18.3.2 Precautions when connecting the refrigerant piping

RWEYQ8~14T9Y1B
VRV IV water-cooled system air conditioner
4P452191-1B – 2020.10
During the initialization process of the outdoor unit, the output signal will trigger a
flow rate of B (50%). The installer should make sure that a flow rate can be
checked in the individual hydronic system of each unit. If this value is not matching
the required flow, the installer should troubleshoot the hydronic system to solve
the problem and ensure the correct flow rate.
To set a different minimum flow rate for the system, change field setting [2-25] to
the applicable value. See
Before connecting the refrigerant piping, make sure the outdoor and indoor units
are mounted.
Connecting the refrigerant piping involves:
▪ Routing and connecting the refrigerant piping to the outdoor unit
▪ Protecting the outdoor unit against contamination
▪ Connecting the refrigerant piping to the indoor units (see the installation manual
of the indoor units)
▪ Connecting the multi-connection piping kit
▪ Connecting the refrigerant branching kit
▪ Keeping in mind the guidelines for:
- Brazing
- Using the stop valves
- Removing the pinched pipes
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.
"20.2 Making field settings" [
18 Piping installation
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