Installing The Unit; Refrigerant Piping Works; Selecting The Refrigerant Pipe - Samsung DVM PLUS III HR Installation Manual

Dvm plus iii hr rd***vrxf series
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installing the unit

REFRIGERANT PIPING WORKS

• When installing, make sure there is no leakage. When recovering the refrigerant, ground the compressor first before removing the
connection pipe. If the refrigerant pipe is not properly connected and the compressor works with the service valve open, the pipe inhales
the air and it makes the pressure inside of the refrigerant cycle abnormally high. It may cause explosion and injury.
• The piping length between the outdoor unit and the indoor unit may not exceed the allowable piping length.
• The pressure of the R410A is high. Use only certified refrigerant pipe and follow the installation method.
• Use clean refrigerant pipe which there is no harmful ion, oxide, dust, iron content or moisture inside pipe.
• Use tools and accessories fit on R410A.
Tool
Pipe cutter
Flaring tool
Refrigerant oil
Torque wrench
Pipe bender
Nitrogen gas
Brazing tool
Gauge manifold
Refrigerant charging hose
Vacuum pump
Electronic scale
Gas leak detector
Flare joint

Selecting the refrigerant pipe

Main pipe
 Main pipe : from outdoor unit to the first branch joint.
 Select the main pipe of outdoor units with the following
table.
Outdoor
unit
Ton HP
6
7.5
Ø9.52 Ø3/8
8
10
10 12.5
Ø12.70 Ø1/2
12
15
14 17.5
16
20
Ø15.88 Ø5/8
18 22.5
20
25
22 27.5
24
30
Ø19.05 Ø3/4 Ø34.93 Ø1 3/8
26 32.5
28
35
30 37.5
DVM PLUS3 HR_IM_E_32805-2.indd 15
Work
Refrigerant pipe work
Air tightening test
Air tightening test ~ additional
refrigerant charging
Vacuuming unit
Use indoor unit's only
First branch
Equivalent pipe length between outdoor
joint
unit and the farthest indoor unit
Pipe size (O.D)
Liquid
Gas
H.P. Gas
mm inch mm inch mm inch mm inch
Ø19.05 Ø3/4 Ø15.88 Ø5/8
Ø22.23 Ø7/8 Ø19.05 Ø3/4
Ø22.23 Ø28.58
Ø28.58 Ø1 1/8
Ø28.58 Ø1 1/8
Ø34.93 Ø1 3/8
If compatible with conventional tool
Pipe cutting
Pipe flaring
Apply refrigerant oil on flared
part
Connect flare joint with pipe
Pipe bending
Inhibition of oxidization
Pipe brazing
Vacuuming, charging and
checking operation
Gas leak test
 Select the main pipe of outdoor units with the following table
when if the farthest indoor unit's length is over 90m(295').
Outdoor
Oil balancing
unit
pipe size
Liquid
Ton HP
mm inch mm inch mm inch mm inch
6
7.5
Ø12.70 Ø1/2
8
10
10 12.5
Ø15.88 Ø5/8
12
15
14 17.5
16
20
Ø19.05 Ø3/4
18 22.5
20
25
Ø6.35 Ø1/4
22 27.5
24
30
Ø22.23 Ø7/8
26 32.5
28
35
30 37.5
Compatible
Ester series oil, alkali
benzene oil or synthetic oil
Compatible
Exclusive
Use one which has a check
valve and 5 torr degree of
vacuum.
Compatible
Exclusive
Pipe size (O.D)
Oil balancing
pipe size
Gas
H.P. Gas
Ø22.23 Ø7/8 Ø19.05 Ø3/4
Ø22.23 Ø7/8
Ø28.58 Ø1 1/8
Ø28.58 Ø1 1/8
Ø34.93 Ø1 3/8
Ø6.35 Ø1/4
Ø34.93 Ø1 3/8
Ø41.28 Ø1 5/8
installing the unit _15
2011-11-11 오후 4:18:15

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