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Piping installation
Installer and user reference guide
79
RWEYQ8~14T9Y1B
VRV IV water-cooled system air conditioner
4P452191-1B – 2020.10
NOTICE
In case of plastic pipes, make sure they are fully oxygen diffusion tight according to
DIN 4726. The diffusion of oxygen into the piping can lead to excessive corrosion.
▪
Connecting piping – Legislation.
Make all piping connections in accordance with
the applicable legislation and the instructions in the "Installation" chapter,
respecting the water inlet and outlet.
▪
Connecting piping – Force.
Do NOT use excessive force when connecting the
piping. Deformation of the piping can cause malfunctioning of the unit.
▪
Connecting piping – Tools.
Only use appropriate tooling to handle brass, which is
a soft material. If NOT, pipes will get damaged.
▪
Connecting piping – Stainless steel.
Only use stainless steel material to connect
the water piping to the unit. If NOT, pipes will get corroded. Take preventive
measures, for example by insulating the connection on the water pipe.
▪
Connecting piping – Air, moisture, dust.
If air, moisture or dust gets into the
circuit, problems may occur. To prevent this:
-
Only use clean pipes
-
Hold the pipe end downwards when removing burrs.
-
Cover the pipe end when inserting it through a wall, to prevent dust and/or
particles from entering the pipe.
-
Use a decent thread sealant to seal connections.
▪
Piping work
–
Dripping
. The outdoor unit is intended for indoor installation.
Carry out piping work in such a way that no water drips on the outdoor unit.
▪
Outlets.
Do NOT connect the
drain
outlet to the
water
outlet.
▪
Filter.
Install the filter in the water piping inlet within a distance of 1.5 m from
the outdoor unit. If sand, waste or rust particles are mixed in the water
circulation system, metal materials will become corroded.
▪
Insulation.
Insulate up to the base of the heat exchanger.
≥
80 mm
b
l
g
d
e
e
a
i
j
c
k
h
f
a
Air purge (field supply)
b
Water outlet
c
Water inlet
d
Shut-off valve (field supply)
e
Water connection
f
Water piping (field supply)
g
Insulation (field supply)
h
Heat exchanger
i
Filter (accessory)
j
Drain valve (field supply)
k
Drain connection
l
Insulation cover
▪
Water pump.
After filling the water piping, run the water pump (field supply) to
flush the water piping. After flushing, clean the filter.
▪
Freeze.
Protect against freezing.
▪
Water pipes.
ALWAYS comply with local and national regulations.
