26
3-4. Prepare the Tubing
● Material: Use seamless phosphorous deoxidized copper
tube for refrigeration. Wall thickness shall comply with the
applicable legislation. The minimal wall thickness must be
in accordance with the table below. For tubes of ø22.22 or
larger, use the material of temper 1/2H or H (Hard copper
tube). Do not bend the hard copper tube.
● Tubing size
Use the tubing size indicated in the table below.
● When cutting the tubing, use a tube cutter, and be sure to
remove any burrs.
The same applies to distribution tubing (optional).
● When bending the tubes, bend each tube using a radius
that is at least 4 times the outer diameter of the tube. When
bending, use sufficient care to avoid crushing or damaging
the tube.
● For flaring, use a flare tool, and be sure that flaring is
performed correctly.
CAUTION
Use sufficient caution during preparation of the tubing.
Seal the tube ends by means of caps or taping to prevent
dust, moisture, or other foreign substances from entering
the tubes.
Refrigerant tubing
Tubing size (mm)
Material Temper - O
(Soft copper tube)
Material Temper - 1/2 H, H
(Hard copper tube)
Outer dia. Thickness Outer dia. Thickness
ø6.35 t0.8 ø22.22 t1.0
ø9.52 t0.8 ø25.4 t1.0
ø12.7 t0.8 ø28.58 t1.0
ø15.88 t1.0 ø31.75 t1.1
ø19.05 t1.2 ø38.1 over t1.35
ø41.28 over t1.45
ø44.45 over t1.55
ø50.8 over t1.8
3-5. Connect the Tubing
● When operating the refrigerant tube installation in the
field, do not apply the flame of welding to the surrounding
sheet-metal parts. If necessary, use a wet rag to prevent
overheating of the heat exchanger.
● Except for the 16 HP model, do not use the supplied
connector tubing.
Model : 8 HP, 10 HP, 12 HP, 14 HP (Except 16 HP)
Refrigerant
tubing
Connection
method
Supplied
parts used?
1
Gas tube Brazing No
2
Liquid tube Flare connection No
3
Balance tube Flare connection No
Model : 16 HP
Refrigerant
tubing
Connection
method
Supplied
parts used?
1
Gas tube Brazing
yes
(ø25.4 ø28.58)
2
Liquid tube Flare connection No
3
Balance tube Flare connection No
Model : 18 HP, 20 HP
Refrigerant
tubing
Connection
method
Supplied
parts used?
1
Gas tube Brazing No
2
Liquid tube Flare connection No
3
Balance tube Flare connection No
Refrigerant tube port
● Use caulking, putty, or a similar material to fill any gaps at
the refrigerant tube port (
) in order to prevent rainwater,
dust or foreign substances from entering the unit.
* Perform this work even if the tubing is routed out in a
downward direction.
Tubing cover
Bottom plate
Tubing routed out
through the front side
Tubing routed out
through the bottom
1
3
2
1
3
2
1
3
2
00_340994_2WAY_Eng.indb 26 2022/8/4 14:28:40
To Next Page
Loading...
