Airwell KXV Series, Инструкция по эксплуатации

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Engineering manual
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CAUTION

Please apply attached refrigerant lines thermal insulation materials for insulation on indoor lateral flare connection
areas. And confirm that the operations are proceeding as item3&4 stated.

Nonoxidizable brazing must be applied to pipes when proceeding brazing.
Attentions on application of flexible couplings:
1)
Please apply flexible coupling at indoor lateral interconnecting areas.
2) Bending angle cannot exceed 90°, and bending cannot be repeated more than 3 times.
3) To reach appropriate torque as per torque wrench:
Outer dia. of copper pipe(mm)/(Inch) Torque (kg.cm)
Φ 9.5(3/8) 350~420
Φ 15.9(5/8) 750~800
Φ 19.05(3/4) 1000~1400
A.
How to braze
CAUTION

Do not allow anything other than the designated refrigerant to get mixed into the freezing cycle, such as air, etc. If
any refrigerant gas leaks while working on the unit, ventilate the room thoroughly right away.

Great caution is needed when passing copper tubes through walls.

Only use the flare nuts included with the unit. Using different flare nuts may cause the refrigerant to leak

In order to prevent dirt, liquid or dust from entering the piping, cure the piping with a pinch or taping.
Ensure using a nitrogen blow when brazing. Brazing without carrying out nitrogen replacement or releasing nitrogen into
the piping will create large quantities of oxidized nitrogen into the piping; these would prevent normal operation of
valves and compressors. So, please braze tubes as followings: