E-
ENGLISH
Cutting or Extending the Pipe
A 24.6ft (7.5m) pipe is supplied with the air conditioner. (optional)
The length of the pipe can be:
Extended up to “A”
Shortened as required
If you need a pipe longer than 24.6ft (7.5m):
You must extend the assembly cable.
For further details on how much refrigerant(R410A) should be
added, refer to Page 13.
1
Make sure that you have the required tools (pipe cutter, reamer, flaring tool
and pipe holder .)
2
If you want to shorten the pipe, cut it using a pipe cutter, ensuring that the cut
edge remains at 90° with the side of the pipe (see examples of correctly and
incorrectly cut edges below .)
Oblique
Rough
Burr
3
To prevent a gas leak, remove all burrs at the cut edge of the pipe using a
reamer .
4
Put a flare nut slightly into the pipe and modify the flare .
Outer Diameter (D)
Depth (A)
/4 inch (6 .35mm)
0 .05 inch ( .3mm)
3/8 inch (9 .5mm)
0 .07 inch ( .8mm)
/ inch ( .80mm)
0 .08 inch ( .0mm)
5/8 inch (5 .88mm)
0 .09 inch ( .mm)
5
Check if you flared the pipe correctly (see examples of incorrectly flared pipes
below .)
Inclined
Damaged Surface
Cracked
Uneven Thickness
6
Align the pipes to connect them easily . Tighten the flare nuts first with your
hands, and then with a torque wrench, applying the following torque:
Outer Diameter
Torque
/4 inch (6 .35mm)
0 .~ .3ft•lb (40~70 kgf•cm)
3/8 inch (9 .5mm)
8 .~0 .3ft•lb (50~80 kgf•cm)
/ inch ( .80mm)
7 .5~30 .4ft•lb (380~40 kgf•cm)
5/8 inch (5 .88mm)
3 .8~34 .7ft•lb (440~480 kgf•cm)
Excessive torque can be cause of gas leakage .
In case brazing the pipe, the nitrogen gas must be blown into the pipe (50
Pa) . The joint must be accessible and serviceable .
7
For further details on how to connect to the outdoor unit and purge the air,
refer to page 3 .
i
nstalling
the
a
ir
condtioner
Model
“A”
AQV09N
AQVN
49 .ft(5m)
AQV8N
AQV4N
98 .4ft(30m)
Summary of Contents for AQV09N Series
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