Connecting The Refrigerant Piping; About Connecting The Refrigerant Piping; Precautions When Connecting The Refrigerant Piping - Daikin ATXM25N2V1B Installer's Reference Manual

1 Attach the drain hose with adhesive vinyl tape to the bottom of
the refrigerant pipes.
2 Wrap the drain hose and the refrigerant pipes together using
insulation tape.
A
C
a b
B
A Right-side piping
B Right-bottom piping
C Right-back piping
a Remove the pipe port cover here for right-side piping.
b Remove the pipe port cover here for right-bottom piping.
To connect the piping on left side, left-back, or
left-bottom
INFORMATION
The factory default is right-side piping. For left-side piping,
remove the piping from the right side and install it on the
left side.
1 Remove the insulation fixing screw on the right side and
remove the drain hose.
2 Remove the drain plug on the left side and attach it to the right
side.
NOTICE
Do NOT apply lubricating oil (refrigerant oil) to the drain
plug when inserting it. The drain plug may deteriorate and
cause drain leakage from the plug.
a
a 4 mm hexagonal wrench
3 Insert the drain hose on the left side and do not forget to tighten
it with the fixing screw; otherwise water leakage may occur.
a
b
a Insulation fixing screw
b Drain hose
4 Attach the drain hose to the refrigerant pipes bottom side using
adhesive vinyl tape.
b
CTXM15+ATXM20~50+FTXM20~71N2V1B
Daikin room air conditioner
4P518023-4C – 2018.09
a
b
a
A
B
C
A Left-side piping
B Left-back piping
C Left-bottom piping
a Remove the pipe port cover here for left-side piping.
b Remove the pipe port cover here for left-bottom piping.
To check for water leaks
1 Remove the air filters.
2 Gradually pour approximately 1 l of water in the drain pan, and
check for water leaks.
6.4

Connecting the refrigerant piping

6.4.1

About connecting the refrigerant piping

Before connecting the refrigerant piping
Make sure the outdoor and indoor unit are mounted.
Typical workflow
Connecting the refrigerant piping involves:
▪ Connecting the refrigerant piping to the indoor unit
▪ Connecting the refrigerant piping to the outdoor unit
▪ Insulating the refrigerant piping
▪ Keeping in mind the guidelines for:
▪ Pipe bending
▪ Flaring pipe ends
▪ Using the stop valves
6.4.2 Precautions when connecting the
refrigerant piping
INFORMATION
Also read the precautions and requirements in the
following chapters:
▪ General safety precautions
▪ Preparation
DANGER: RISK OF BURNING
CAUTION
▪ Use the flare nut fixed to the unit.
▪ To prevent gas leakage, apply refrigeration oil only to
the inside of the flare. Use refrigeration oil for R32.
▪ Do NOT reuse joints.
6 Installation
Installer reference guide
13