Aligning The Pipes - Samsung DVM PLUS III HR Installation Manual

installing the unit
REFRIGERANT PIPING WORKS

Aligning the pipes

• Check that the flaring is properly made.
• Align the center of the piping and sufficiently tighten the flare nut with fingers. Finally, tighten
the flare nut with torque wrench until the wrench clicks. When tightening the flare nut with
torque wrench, ensure the direction for tightening follows the arrow on the wrench.
• Make sure to use ester oil to coat the flare connection section.
Outer diameter
[mm(inch)]
ø6.35(ø1/4)
ø9.52(ø3/8)
ø12.70(ø1/2)
ø15.88(ø5/8)
Caution for connecting the pipe
• Blowing Nitrogen gas should be done when brazing the pipe.
CAUTION
• Make sure to use the provided flare joint.
• Make sure that there are any cracks on the bent pipe.
• Do not fasten the flare joint with excessive strength.
• Use ester oil to coat the flare connection section to prevent refrigerant leak.
20_ installing the unit
DVM PLUS3 HR_IM_E_32805-2.indd 20
Pipe
Flare connection section Flare joint
Connection
torque (kgf•cm)
145~175
333~407
505~615
630~769
R410A is a high pressure refrigerant therefore there is a risk of refrigerant leakage
if the flare connection is not coated by ester oil.
Flare dimension
Flare shape [mm(inches)]
[mm(inches)]
8.70 ~ 9.10(0.343~0.358)
12.80~ 13.20(0.504~0.520)
16.20~ 16.60(0.638~0.654)
19.30~ 19.70(0.760~0.776)
R 0.4~0.8(0.0157~0.0314)
2011-11-11 오후 4:18:18