INSTALLATION
23
ENGLISH
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.
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
Tightening torque N·m(Turn clockwise to close)
Shaft(valve body) Cap(Valve lid) Service port Flare nut
Gas line piping attached to unit
Ø 6.35
6 ± 0.6
Hexagonal
wrench 4 mm
29.4 ± 2.9
12.7±2
16 ± 2
-
Ø 9.52 38 ± 4
Ø 12.7 9 ± 0.9
53.9 ± 5.8
55 ± 6
Ø 15.88 15 ± 1.5
Hexagonal
wrench 6 mm
75 ± 7
Ø 22.2
30 ± 3
Hexagonal
wrench 10 mm
- 25 ± 3
Ø 25.4
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