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Closing shutoff valve
1
Remove the cap and turn the valve clockwise with the hexagon wrench.
2
Securely tighten the valve until the shaft contacts the main body seal.
3
Make sure to tighten the cap securely.
- For the tightening torque, refer to the table on the below.
Tightening torque
Shutoff
valve size
Shaft(valve body)
Ø 6.35
6±0.6
Ø 9.52
wrench 4 mm
Ø 12.7
9±0.9
Ø 15.88
15±1.5
wrench 6 mm
Ø 22.2
±3
30
wrench 10 mm
Ø 25.4
Insulation of shutoff valve
1
Use the heat insulation material for the refrigerant piping which has an excellent
heat-resistance (over 120 °C).
2
Precautions in high humidity circumstance:
This air conditioner has been tested according to the "ISO Conditions with Mist" and
confirmed that there is not any default. However, if it is operated for a long time in high
humid atmosphere (dew point temperature: more than 23 °C), water drops are liable to fall.
In this case, add heat insulation material according to the following procedure:
- Heat insulation material to be prepared... EPDM (Ethylene Propylene Diene Methylene)-over
120 °C the heat-resistance temperature.
- Add the insulation over 10mm thickness at high humidity environment.
Tightening torque N . m(Turn clockwise to close)
Cap(Valve lid) Service port
29.4±2.9
Hexagonal
Hexagonal
53.9±5.8
Hexagonal
Indoor unit
Flare nut Gas line piping attached to unit
16±2
38±4
55±6
12.7±2
75±7
-
Fastening band
(accessory)
Refrigerant piping
Thermal insulator
(accessory)
INSTALLATION
23
-
25±3
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