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f Tightening of connection parts
f
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 nut
Diameter(D)
Torque (kgf•cm)
• 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 page 58.)
6. Insulate the drain hose after connecting it.
- Insulate it correctly to avoid dew formation.
f Pipe insulation
f
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 100mm to prevent any distortion of the pipe.
7. Wind a finish tape when connecting refrigerant pipe, and communication cable is completed.
Indoor unit
사우디,남아공향 FAC MEMORY 냉난방_IBIM_EN_03892A(2).indd 51
Flare connection part
Monkey
spanner
ø6.35mm
ø9.52mm
140~170
250~280
High
pressure
pipe
Low
Flare
pressure
nut
pipe
Torque
wrench
ø12.70mm
ø15.88mm
380~420
440~480
Pipe insulation
Indoor/outdoor unit
communication cable
Outdoor unit
Low pressure side
High pressure side
Stop valve
Service port
ø19.05mm
990~1210
Finishing tape
Indoor/outdoor unit
power cable
Valve core
L wrench
Service port cap
51
2013-04-17 오전 11:07:50
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