Samsung AF28FVSDA Series User & Installation Manual page 44

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 50.)
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
S-east_MEMORY_IBIM_EN_03955A-02_EN.indd 43
Flare connection part
Monkey
spanner
ø6.35 mm ø9.52 mm
140~170 250~280
Low pressure
pipe
High pressure
pipe
Flare nut
Torque
wrench
ø12.70 mm ø15.88 mm
380~420 440~480
Pipe insulation
Indoor/outdoor unit
communication cable
Outdoor unit
Low pressure side
High pressure side
Stop valve
Service port
ø19.05 mm
990~1210
Finishing tape
Indoor/outdoor unit
power cable
Valve core
L wrench
Service port cap
43
2014-10-28 오후 12:01:02