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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
30 ± 3
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 fol-
lowing procedure:
- Heat insulation material to be prepared... EPDM (Ethylene Propylene Diene Meth-
ylene)-over 120 °C the heat-resistance temperature.
- Add the insulation over 10 mm 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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