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7 Hanging the indoor unit on the Bracket Hanger, then fix the
Indoor Unit by using 4 Screws.
• Case 1. Installing on the floor: You must secure the unit to
the wall using 4 screws to ensure that the unit does not
fall.
• Case 2. Hanging on the wall : Follow the installation guide
supplied in the accessory part.
– Screw positions are specified on the installation guide.
Step 4 Purging inert gas from the indoor
unit
From factory the unit is supplied and set with a pre-charge of
nitrogen gas (inert gas). Therefore, all inert gas must be purged
before connecting the assembly piping.
Unscrew the pinch pipe at the end of each refrigerant pipe.
• Result: All inert gas escapes from the indoor unit.
NOTE
To prevent dirt or foreign objects from getting into the pipes
during installation, do NOT remove the pinch pipe completely
until you are ready to connect the piping.
The designs and shape are subject to change according to the
model.
Step 5 Connecting the assembly pipes to
the refrigerant pipes
There are two refrigerant pipes of different diameters :
• A smaller one for the liquid refrigerant.
• A larger one for the gas refrigerant. The inside of copper pipe
must be clean and has no dust.
1 Remove the pinch pipes and connect the assembly pipes.
First tighten the flare nuts manually and then with a torque
wrench and a spanner applying the following torque.
Spanner
Union
Outer Diameter
mm
Liquid
refrigerant port
Ø6.35
Ø9.52
gas
refrigerant port
Ø12.70
Ø15.88
Ø19.05
(1 N•m=10 kgf•cm)
NOTE
• If the pipes must be shortened, see Step 6 Cutting and
flaring the pipes on page 10.
Torque
inch
N•m
1/4
14 to 18
10.3 to 13.3
3/8
34 to 42
25.1 to 31.0
1/2
49 to 61
36.1 to 45.0
5/8
68 to 82
50.2 to 60.5
3/4
100 to 120
73.8 to 88.5
Torque
wrench
Flare nut
lbf.ft
9
English
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