
24
English
Installation Procedure
Installation Pr
oc
edur
e
7
Adjust the unit to the appropriate position, taking into
account the installation area for the front panel.
࡛
Place the pattern sheet on the indoor unit.
࡛
Adjust the space between the ceiling and the
indoor unit by using a dimension gauge.
࡛
Fix the indoor unit securely after adjusting the level
of the unit by using a leveller.
࡛
Remove the pattern sheet and install the front
panel.
(Unit: mm)
Slim 1way cassette
(Small, Wind-Free)
Indoor unit
Slim 1way cassette
(Medium, Wind-Free)
Slim 1way cassette
(Large, Wind-Free)
Air outlet side
Jig
6.
0
8.
0
Ceiling
Air inlet side
Indoor unit
Air outlet side
Jig
10
10
Ceiling
Air inlet side
Indoor unit
Air outlet side
Jig
10
10
Ceiling
Air inlet side
Slim 1way cassette
(Small)
Indoor unit
Slim 1way cassette
(Medium)
Slim 1way cassette
(Large)
Air outlet side
Jig
16
18
Ceiling
Air inlet side
Indoor unit
Air outlet side
Jig
15
15
Ceiling
Air inlet side
Indoor unit
Air outlet side
Jig
15
15
Ceiling
Air inlet side
Step 2 Performing the gas leak test
To identify potential gas leaks on the indoor unit, inspect
the connection area of each refrigerant pipe using a leak
detector for R-410A.
Before recreating the vacuum and recirculating the
refrigerant gas, pressurize the whole system with
nitrogen (using a cylinder with a pressure reducer) at a
pressure above 4.1 MPa in order to immediately detect
leaks on the refrigerant fittings.
Made vacuum for 15 minutes and pressurizing system
with nitrogen.
Liquid side
Gas side
Insulator
Step 3 Insulating the refrigerant pipes
Once you have checked that there are no leaks in the
system, you can insulate the piping and hose.
1
To avoid condensation problems, place Acrylonitrile
Butadien Rubber separately around each refrigerant
pipe.
No gap
NBR (T13.0 or thicker)
NOTE
࡛
Always make the seam of pipes face upwards.
2
Wind insulating tape around the pipes and drain hose
avoiding compressing the insulation too much.
3
Finish wrapping insulating tape around the rest of the
pipes leading to the outdoor unit.
4
The pipes and electrical cables connecting the indoor
unit with the outdoor unit must be fixed to the wall
with suitable ducts.
Insulation cover pipe
Insulation pipe
Be sure to overlap the insulation.
Indoor unit