ENGLISH-14
Connecting pipes
▶
tightening of connection parts
Alight the pipes to be connected and tighten the flare nuts with your hands first and then with a torque wrench, tighten
it in a direction shown in below illustration .
- You can avoid of gas leakage by applying refrigerant oil on the flare connection part .
Pipe
Flare connection part
Flare nut
Monkey
spanner
Torque
wrench
Diameter(D)
ø6 .35 mm
ø9 .52 mm
ø12 .70 mm
ø15 .88 mm
Torque (kgf•cm)
140~180
350~430
500~620
690~830
• Apply the torque depending on the diameter and tighten it securely to make sure there is no leakage .
CaUtION
5 . Eliminate the uncondensed gas with vacuum pump and open the service valve to put the refrigerant .
- Make sure to perform leak test . (Refer to 'Performing leak test' on pagSe 21 .)
6 . Insulate the drain hose after connecting it .
- Insulate it correctly to avoid dew formation .
▶
Pipe insulation
1) Insulate the refrigerant pipes heavily with the finishing tape .
If the insulation is poor, dew may form and leak through the
indoor .
2) Use finishing tape wind up the refrigerant pipe .
3) When you bend the pipe and secure a minimum bending
radius of 100 mm to prevent any distortion of the pipe .
Pipe insulation
Finishing tape
Indoor/outdoor unit
power cable
Indoor/outdoor unit
communication cable
7 . Wind a finish tape when connecting refrigerant pipe, and communication cable is completed .
Indoor unit
Outdoor unit
Low
pressure
pipe
High
pressure
pipe
Flare
nut
High pressure side
Low pressure side
Service port
Stop valve
Service port cap
L wrench
Valve core
FAC MEMORY-EU_IM_04036A-03_EN.indd 14
2016-03-30 오전 10:58:26
