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Digital Inverter
5
REFRIGERANT PIPING
Knockout of Pipe Cover
Front direction
Knockout procedure
• The indoor/outdoor connecting pipes can be
connected to 4 directions.
Take off the knockout part of the pipe cover in
which pipes or wires pass through the base
plate.
• Detach the piping cover and give an impact on
the knockout section a few times with the shank
of a screwdriver. A knockout hole can easily be
punched.
• After punching the knockout hole, remove burrs
of the hole and then install the supplied
protective bush and guard material for passage
part 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.
11-EN
Rear direction
Pipe cover
Side direction
Down direction
– 11 –
Outdoor Unit Installation Manual
Optional Installation Parts
(Local Procure)
Parts name
Refrigerant piping
A
Liquid side : Ø9.5 mm
Gas side
: Ø15.9 mm
Pipe insulating material
B
(polyethylene foam, 10 mm thick)
C Putty, PVC tapes
Refrigerant Piping
Connection
CAUTION
TAKE NOTICE THESE IMPORTANT
4 POINTS BELOW FOR PIPING WORK
1. Keep dust and moisture away from inside
the connecting pipes.
2. Tightly connect the connection between
pipes and the unit.
3. Evacuate the air in the connecting pipes
using VACUUM PUMP.
4. Check gas leak at connected points.
▼ Piping connection
Liquid side
Outer
Thickness
diameter
diameter
Ø9.5 mm
0.8 mm
Ø15.9 mm
Flaring
1. Cut the pipe with a pipe cutter.
Be sure to remove burrs that may cause 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 R410A.
Insert a flare nut into the pipe, and flare the
pipe.
As the flaring sizes of R410A differ from those
of refrigerant R22, the flare tools newly
manufactured for R410A are recommended.
Toshiba XXXXXXX(<SanSerif1>X/X)
Q'ty
Each one
1
Each one
Gas side
Outer
Thickness
1.0 mm
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