26-EN
25-EN
– 13 –
Flaring
1. Cut the pipe with a pipe cutter.
Be sure to remove burrs that may cause a gas leak.
2. Insert a
fl
are nut into the pipe, and then
fl
are the
pipe.
Use
the
fl
are nuts supplied with the air conditioner
or those for R32.
Insert
a
fl
are nut into the pipe, and
fl
are the pipe.
Use
the
fl
are nuts supplied with the air conditioner
or
fl
are nuts for R32 or R410A.
However, the conventional tools can be used by
adjusting the projection margin of the copper pipe.
Projection margin in
fl
aring: B (Unit: mm)
B
RIGID (Clutch type)
Outer dia. of
copper pipe
Tool used
Conventional
tool used
9.5
0 to 0.5
1.0 to 1.5
15.9
Flaring dia. size: A (Unit: mm)
A
Outer dia. of copper pipe
A +0
–0.4
9.5
13.2
15.9
19.7
CAUTION
y
Do not scratch the inner surface of the
fl
ared part
when removing burrs.
y
Flare processing under the condition of scratches
on the inner surface of
fl
are processing part will
cause refrigerant gas leak.
y
Check that the
fl
ared part is not scratched,
deformed, stepped, or
fl
attened, and that there
are no chips adhered or other problems, after
fl
are
processing.
y
Do not apply refrigerating machine oil to the
fl
are
surface.
5
Refrigerant piping
Supplied protective bush
Supplied passage hole
guard material
* Attach the guard material
securely so that it does
not come loose.
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)
1
C
Putty, PVC tape
One each
Refrigerant piping connection
CAUTION
IMPORTANT 4 POINTS FOR PIPING WORK
1. Reusable mechanical connectors and
fl
ared
joints are not allowed indoors. When mechanical
connectors are reused indoors, sealing parts shall
be renewed.
When
fl
ared joints are reused indoors, the
fl
are
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
Liquid side
Outer diameter
Thickness
Ø9.5 mm
0.8 mm
Gas side
Outer diameter
Thickness
Ø15.9 mm
1.0 mm
Knockout of pipe cover
Knockout procedure
Rear direction
Side direction
Down direction
Front direction
Pipe cover
y
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.
y
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.
y
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.
Refrigerant Piping
1. Use the following items for the refrigerant
piping.
Material : Seamless phosphorous deoxidized
copper pipe.
Ø9.52 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
y
Remove the screws at 2 locations and slide the
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.
Service panel
Right-side plate
Right-side
claws
Left-side
claws
(1)
(2)
(3)
