To Connect The Refrigerant Piping To The Outdoor Unit - Daikin VRV 5-S RXYSA8AMY1B Installation And Operation Manual

15 Piping installation
15.2.4 To connect the refrigerant piping to the
outdoor unit
▪ Piping length. Keep field piping as short as possible.
▪ Piping protection. Protect the field piping against physical
damage.
1 Do the following:
▪ Remove the service cover. See
unit" [ 4 27].
▪ Remove the piping intake plate (a) with screw (b).
a
b
2 Choose a piping route (a, b or c).
a c
b
INFORMATION
a
b b
▪ Punch out the knockout (a) in the bottom plate or cover
plate by tapping on the attachment points with a flat
head screwdriver and a hammer.
▪ Optionally, cut out the slits (b) with a metal saw.
NOTICE
Precautions when making knockout holes:
▪ Avoid damaging the casing and underlying piping.
▪ After making the knockout holes, we recommend to
remove the burrs and paint the edges and areas
around the edges using repair paint to prevent rusting.
▪ When passing electrical wiring through the knockout
holes, wrap the wiring with protective tape to prevent
damage.
3 Do the following:
▪ Connect the liquid pipe (a) to the liquid stop valve. (brazing)
▪ Connect the gas pipe (b) to the gas stop valve. (brazing)
8 HP 10-12 HP
a
b
Installation and operation manual
32
"14.2.1 To open the outdoor
b a b
a
b
NOTICE
When brazing: First braze the liquid side piping, then the
gas side piping. Enter the electrode from the front of the
unit and the welding torch from the right side to braze with
the flames facing outside and avoid the compressor sound
insulation and other piping.
A
a b
a Electrode
b Burning-resistant plate
c Welding torch
d Flames
e Compressor sound insulation
f Liquid side piping
g Gas side piping
▪ Connect the gas piping accessories c and d (d: only for
10 HP). There are three possibilities:
To the front To the side
d c
WARNING
Provide adequate measures to prevent that the unit can be
used as a shelter by small animals. Small animals that
make contact with electrical parts can cause malfunctions,
smoke or fire.
NOTICE
Make sure to open the stop valves after installing the
refrigerant piping and performing vacuum drying. Running
the system with the stop valves closed may break the
compressor.
NOTICE
▪ Be sure to use the supplied accessory pipes when
carrying out piping work in the field.
▪ Be sure that the field installed piping does not touch
other pipes, the bottom panel or side panel. Especially
for the bottom and side connection, be sure to protect
the piping with suitable insulation, to prevent it from
coming into contact with the casing.
The connections to the branch kits are the responsibility of the
installer (field piping).
A
e d c
a b f g
c
Downwards
d
c d
RXYSA8~12AMY1B
VRV 5-S system air conditioner
4P752781-1B – 2024.02