LG multi v Installation Manual page 22

INSTALLATION
22
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
Shut off
Shaft(valve body)
valve size
[mm(inch)]
Closed
Ø6.35(1/4)
6.0 ±0.6
(4.4±0.4)
Ø9.52(3/8)
10.0 ±1.0
Ø12.7(1/2)
(7.4±0.7)
12.0 ±1.2
Ø15.88(5/8)
(8.9±0.9)
14.0 ±1.4
Ø19.05(3/4)
(10.3±1.0)
Ø22.2(7/8) 30.0 ±3.0
(22.1±2.2)
Ø25.4(1.0)
Insulation of shutoff valve
1
Use the heat insulation material for the refrigerant piping which has an excellent heat-resis-
tance (over 248°F).
2
Precautions in high humidity circumstance:
This air conditioner has been tested according to the "ISO Conditions with Mist" and con-
firmed that there is not any default. However, if it is operated for a long time in high humid at-
mosphere (dew point temperature: more than 73.4°F), 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
248°F the heat-resistance temperature.
- Add the insulation over 10mm(0.39 inch) thickness at high humidity environment.
Tightening torque N·m(lbs ·ft)(Turn clockwise to close)
Hexagonal
Opened
wrench
4mm
(0.16inch)
5.0 ±0.0
(3.7±0.4)
5mm
(0.24inch)
8mm
(0.31inch)
Indoor unit
Cap (Valve Service
lid) port
16±2(12±1.5)
17.6±2.0
(13.0±1.5)
38±4(28±3.0)
20.0±2.0
55±6(41±4.4)
(14.8±1.5)
12.7±2
75±7 (55±5.1)
(9.4±1.5)
25.0±2.5
(18.4±1.8)
Fastening band
(accessory)
Refrigerant piping
Thermal insulator
(accessory)
Gas line pip-
Flare nut ing attached
to unit
-
110±10
(81.1±7.4)
25±3.0
-
(18.5±2.2)