To Connect The Refrigerant Piping To The Outdoor Unit - Daikin VRV IV-S RXYSQ4T8VB Series Installation And Operation Manual

To handle the stop valve cover
▪ The stop valve cover is sealed where indicated by the arrow. Do
NOT damage it.
▪ After handling the stop valve, tighten the stop valve cover
securely, and check for refrigerant leaks. For the tightening
torque, refer to the table below.
To handle the service port
▪ Always use a charge hose equipped with a valve depressor pin,
since the service port is a Schrader type valve.
▪ After handling the service port, make sure to tighten the service
port cover securely. For the tightening torque, refer to the table
below.
▪ Check for refrigerant leaks after tightening the service port cover.
Tightening torques
Stop valve Tightening torque N•m (turn clockwise to close)
size (mm)
Valve body Hexagonal
wrench
Ø9.5 5.4~6.6 4 mm
Ø15.9 13.5~16.5 6 mm
14.2.8 To connect the refrigerant piping to the
outdoor unit
NOTICE
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.
1 Do the following:
▪ Remove the service cover (a) with screw (b).
▪ Remove the piping intake plate (c) with screw (d).
a
b
c
d
2 Choose a piping route (a, b, c or d).
d
a c
b
RXYSQ4~6T8V/YB(*)
VRV IV-S system air conditioner
4P482275-1B – 2020.10
Shaft
Cap (valve Service
lid) port
13.5~16.5 11.5~13.9
22.5~27.5
INFORMATION
a
b b
▪ Remove the knockout hole (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.
▪ Connect the gas pipe (b) to the gas stop valve.
b
a
▪ In case of RXYSQ6: Connect the gas piping accessories (c,
c1, d, e), and cut them to the required length (e1). This is
necessary because the size of the gas stop valve is Ø15.9
while the piping between outdoor unit and first refrigerant
branch kit is Ø19.1.
Possibility 1: To the front
A
c
f e1 e d
14 Piping installation
b a b
Possibility 2: To the back
A
c
d e f
Installation and operation manual
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