Connecting The Refrigerant Piping; Precautions When Connecting Refrigerant Piping; About Connecting The Refrigerant Piping; To Route The Refrigerant Piping - Daikin RWEYQ8T9Y1B Installer And User Manual

NOTICE
When the installation height of the unit needs to be
increased, do not use stands to only support the corners.
▪ The preferred installation is on a solid longitudinal foundation
(steel beam frame or concrete). The foundation must be larger
than the grey marked area.
800 mm
600 mm
Minimum foundation
a Anchor point (4×)
▪ Fasten the unit in place using four foundation bolts M12. It is best
to screw in the foundation bolts until their length remains 20 mm
above the foundation surface.
6.4

Connecting the refrigerant piping

6.4.1 Precautions when connecting refrigerant
piping
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 may 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.
NOTICE
After all the piping has been connected, make sure there is
no gas leak. Use nitrogen to perform a gas leak detection.
RWEYQ8~14T9V1B + RWEYQ8~14T9Y1B
VRV IV water-cooled system air conditioner
4P452191-1 – 2017.04
a
6.4.2

About connecting the refrigerant piping

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
6.4.3

To route the refrigerant piping

Installation of refrigerant piping is possible as top connection
(standard) or front connection.
In case of top connection:
a
In case of front connection:
Remove and change the position of the pipe service plate (a) as
shown in figure below.
a
6.4.4 To connect the refrigerant piping to the
outdoor unit
INFORMATION
All local inter unit piping are field supplied except the
accessory pipes.
6 Installation
Installer and user reference guide
23