55
12.2.5.2 Connecting the Piping to Outdoor
Decide piping length and then cut by using pipe cutter.
Remove burrs from cut edge.
Make flare after inserting the flare nut (locate at valve)
onto the copper pipe. Align center of piping to valve
and then tighten with torque wrench to the specified
torque as stated in the table.
Do not overtighten, overtightening may cause gas leakage.
Piping size Torque
6.35 mm (1/4") [18 N•m (1.8 kgf•m)]
9.52 mm (3/8") [42 N•m (4.3 kgf•m)]
12.7 mm (1/2") [55 N•m (5.6 kgf•m)]
15.88 mm (5/8") [65 N•m (6.6 kgf•m)]
19.05 mm (3/4") [100 N•m (10.2 kgf•m)]
12.2.5.3 Connecting the Piping to Outdoor Multi
Decide piping length and then cut by using pipe cutter.
Remove burrs from cut edge. Make flare after
inserting the flare nut (locate at valve) onto the copper
pipe. Align center of piping to valve and then tighten
with torque wrench to the specified torque as stated in
the table.
Connection pipe
(female side)
Auxiliary pipe
(male side)
Flare Nut
Hall Union
Liquid side
* For Gas side piping please refer table and diagram below
Outdoor Multi Combination Model
Pipe size
(refer to
diagram)
R32 Model R410A Model
CS-MZ16***,
CS-Z20***,
CS-XZ20***,
CS-Z25***,
CS-XZ25***,
CS-Z35***,
CS-XZ35***
CU-2Z35***,
CU-2Z41***,
CU-2Z50***,
CU-3Z52***,
CU-3Z68***,
CU-4Z68***,
CU-4Z80***,
CU-5Z90***
CU-2E12***,
CU-2E15***,
CU-2E18***,
CU-3E18***,
CU-3E23***,
CU-4E23***,
CU-4E27***,
CU-5E34***
CS-Z42***,
CS-Z50***,
CS-XZ50***
CU-2Z50***,
CU-3Z52***,
CU-3Z68***,
CU-4Z68***,
CU-4Z80***,
CU-5Z90***
CU-2E18***,
CU-3E18***,
CU-3E23***,
CU-4E23***,
CU-4E27***,
CU-5E34***
(CZ-MA1P)
CS-Z71*** CU-4Z80***,
CU-5Z90***
CU-4E23***,
CU-4E27***,
CU-5E34***
(CZ-MA2P) &
(CZ-MA3P)
Hall Union
Connection pipe
(female side)
Auxiliary pipe
(male side)
Flare Nut
Hall Union
Packing
Connection pipe
(female side)
Auxiliary pipe
(male side)
Pipe size reducer (CZ-MA1P)
Flare Nut
Auxiliary pipe
(male side)
(Outdoor)
Auxiliary pipe
(male side)
(Indoor)
Hall Union
Hall Union
Packing
Packing Connection pipe
(female side)
Pipe size expander
(CZ-MA2P)
Flare Nut
Pipe size reducer
(CZ-MA3P)
Gas side
12.2.5.4 Cutting and Flaring the Piping
1 Please cut using pipe cutter and then remove the burrs.
2 Remove the burrs by using reamer. If burrs is not removed, gas leakage may be caused. Turn the piping end
down to avoid the metal powder entering the pipe.
3 Please make flare after inserting the flare nut onto the copper pipes.
When properly fl ared, the internal surface of the
fl are will evenly shine and be of even thickness.
Since the fl are part comes into contact with the
connections, carefully check the fl
are fi nish.
Improper fl aring
Inclined Surface
damaged
Cracked Uneven
thickness
1. To cut 2. To remove burrs 3. To fl are
Bar
Red arrow mark
Handle
Core
Yoke
Clamp handle
Bar
0 – 0.5 mm
Copper pipe
Reamer
Point down
Pipe
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