To Connect The Refrigerant Piping To The Outdoor Unit - Daikin RXYSQ8TMY1B Installation And Operation Manual

5 Installation
3 Recover gas and oil from the pinched piping by using a
recovery unit.
CAUTION
Do not vent gases into the atmosphere.
4 When all gas and oil is recovered from the pinched piping,
disconnect the charge hose and close the service ports.
5 Cut off the lower part of the gas and liquid stop valve pipes
along the black line. Use an appropriate tool (e.g. a pipe cutter,
a pair of nippers).
WARNING
Never remove the pinched piping by brazing.
Any gas or oil remaining inside the stop valve may blow off
the pinched piping.
6 Wait until all oil is dripped out before continuing with the
connection of the field piping in case the recovery was not
complete.
5.3.3 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. See
unit" on page 9.
▪ Remove the piping intake plate (a) with screw (b).
a
b
2 Choose a piping route (a, b, c or d).
8 HP
d
a c a
b
Installation and operation manual
12
"5.1.1 To open the outdoor
10+12 HP
c
b
3 If you have chosen the downwards piping route:
▪ Drill (a, 4×) and remove the knockout hole (b).
▪ Cut out the slits (c) with a metal saw.
a b
4× Ø6 mm
c c
4 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)
b
a
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, d), and cut them to
the required length (d1).
Possibility 1: To the front
d1 d c
A
e d c
a b f g
c
Possibility 2: To the back
c d
RXYSQ8~12TMY1B
VRV IV-S system air conditioner
4P400263-1F – 2017.02