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EN
ID
ID
5
Refrigerant piping
Optional installation parts
(Locally procured)
Parts name
Q’ty
A
Refrigerant piping
Liquid side: Ø9.5 mm
Gas side: Ø15.9 mm
One each
B
Pipe insulating material
(polyethylene foam, 10 mm thick)
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Supplied protective bush
Supplied passage hole
guard material
* Attach the guard material
securely so that it does
not come loose.
Refrigerant piping connection
CAUTION
IMPORTANT 4 POINTS FOR PIPING WORK
1. Reusable mechanical connectors and flared joints
are not allowed indoors. When mechanical
connectors are reused indoors, sealing parts shall
be renewed.
When flared joints are reused indoors, the flare part
shall be refabricated.
2. Tight connection (between pipes and unit)
3. Evacuate the air in the connecting pipes by using
VACUUM PUMP.
4. Check the gas leakage. (Connected points)
Piping connection
Projection margin in flaring: B (Unit: mm)
Rigid (Clutch type)
Flaring dia. size: A (Unit: mm)
Liquid side
Outer diameter
Thickness
Ø9.5 mm
0.8 mm
Gas side
Outer diameter
Thickness
Ø15.9 mm
1.0 mm
Outer dia. of
copper pipe
R32/R410A
tool used
Conventional
tool used
1.0 to 1.5
9.5
0 to 0.5
15.9
Outer dia. of copper pipe
A
+0
–0.4
2
.
3
1
5
.
9
7
.
9
1
9
.
5
1
B
A
Refrigerant Piping
1. Use the following items for the refrigerant
piping.
Material : Seamless phosphorous deoxidized
copper pipe.
ø6.35, ø9.52, ø12.7 Wall thickness 0.8 mm or
more
ø15.88 Wall thickness 1.0 mm or more
Do not use any copper pipes with a wall
thickness less than these thicknesses.
Removing service panel
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service panel down. Next, detach the right-side
claws followed by left-side claws to remove the
service panel.
When doing this, pulling the service panel towards
the front could damage the claws.
When attaching the service panel, attach the left
claws followed by the right claws and lift the service
panel upwards and secure it with screws in the 2
locations.
Knockout of pipe cover
Knockout procedure
The indoor / outdoor connecting pipes can be
connected in 4 directions.
Take off the knockout part of the pipe cover through
which pipes or wires will pass through the base plate.
Detach the pipe cover and tap on the knockout
section a few times with the shank of a screwdriver.
A knockout hole can easily be punched.
After punching out the knockout hole, remove burrs
from the hole and then install the supplied protective
bush and guard material around the passage hole to
protect wires and pipes.
Be sure to attach the pipe covers after pipes have
been connected. Cut the slits under the pipe covers
to facilitate the installation.
After connecting the pipes, be sure to mount the pipe
cover. The pipe cover is easily mounted by cutting off
the slit at the lower part of the pipe cover.
* Be sure to wear heavy work gloves while working.
Rear direction
Pipe cover
Side direction
Down direction
Front direction
Flaring
1. Cut the pipe with a pipe cutter.
Be sure to remove burrs that may cause a gas leak.
2. Insert a flare nut into the pipe, and then flare the
pipe.
Use the flare nuts supplied with the air conditioner
or those for R32.
Insert a flare nut into the pipe, and flare the pipe.
Use the flare nuts supplied with the air conditioner
or flare nuts for R32 or R410A.
However, the conventional tools can be used by
adjusting the projection margin of the copper pipe.
CAUTION
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when removing burrs.
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on the inner surface of flare processing part will
cause refrigerant gas leak.
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deformed, stepped, or flattened, and that there are
no chips adhered or other problems, after flare
processing.
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surface.
(1)
(3)
(2)
Left-side
claws
Service panel
Right-side plate
Right-side
claws
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