17
A5MSX-2009
Piping Work
• Do not use contaminated or damaged copper tubing. Do not remove plastic, rubber plugs and brass
nuts from the valves, fittings, tubings and coils until you are ready to connect suction or liquid line into
valves or fittings.
• If any brazing work is required, ensure that the nitrogen gas passed through coil and joints while the
brazing work is being done. This will eliminate soot formation on the inside walls of the copper tubings.
• Cut the connection pipe with a pipe cutter.
• Remove burrs from cut edges of the pipes with remover. Hold the end of the pipe downwards to prevent
metal chips from entering the pipe.
• Insert the flare nuts, mounted on the connection parts of both the indoor unit and outdoor unit onto the
copper pipes.
• Flare the pipe with extra length above the flaring tool as shown in the table below.
• The flare edge must be even and not cracked or scratched.
Copper tube
Swaging block
D
A
Ø TUBE, D
A(MM)
Inch
mm
Imperial
Rigid
1/4”
6.35
1.3
0.7
3/8”
9.52
1.6
1.0
1/2”
12.70
1.9
1.3
5/8”
15.88
2.2
1.7
3/4”
19.05
2.5
2.0
PIPE CONNECTION
PIPE CONNECTION
PIPE CONNECTION
INDOOR
UNIT A
INDOOR
UNIT B
INDOOR
UNIT C
INDOOR
UNIT B
INDOOR
UNIT A
INDOOR
UNIT C
INDOOR
UNIT B
INDOOR
UNIT A
INDOOR
UNIT D
Pos.
A5MSX20
A5MSX25
A5MSX30
A/AR
A/AR
A/AR
A
1/4”
3/8”
1/4”
3/8” 1/4”
3/8”
B
1/4”
3/8”
1/4”
3/8” 1/4”
3/8”
C
1/4”
3/8” 1/4”
3/8”
D
1/4”
3/8”
Liquid
Gas Liquid
Liquid
Gas
Gas
Cutting copper tube
1/4t
Remove burr Indoor
Application Information
