Panasonic CU-Z20VKE Series Installation Instruction page 56

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.
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.
* For Gas side piping please refer table and diagram below
Outdoor Multi Combination Model
R32 Model
CS-MZ16***, CU-2Z35***,
CS-Z20***, CU-2Z41***,
CS-XZ20***, CU-2Z50***,
CS-Z25***, CU-3Z52***,
CS-XZ25***, CU-3Z68***,
CS-Z35***, CU-4Z68***,
CS-XZ35*** CU-4Z80***,
CU-5Z90***
CS-Z42***, CU-2Z50***,
CS-Z50***, CU-3Z52***,
CS-XZ50*** CU-3Z68***,
CU-4Z68***,
CU-4Z80***,
CU-5Z90***
CS-Z71*** CU-4Z80***,
CU-5Z90***
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.
Pipe
Reamer
Point down
1. To cut 2. To remove burrs
Pipe size
(refer to
diagram)
R410A Model
CU-2E12***,
CU-2E15***,
CU-2E18***,
CU-3E18***,
CU-3E23***,
CU-4E23***,
CU-4E27***,
CU-5E34***
CU-2E18***,
CU-3E18***,
CU-3E23***,
CU-4E23***,
(CZ-MA1P)
CU-4E27***,
CU-5E34***
CU-4E23***,
CU-4E27***,
CU-5E34*** (CZ-MA2P) &
(CZ-MA3P)
Handle
Bar
Yoke
Core
Red arrow mark
Clamp handle
3. To fl are
Do not overtighten, overtightening may cause gas leakage.
Piping size
6.35 mm (1/4")
9.52 mm (3/8")
12.7 mm (1/2")
15.88 mm (5/8")
19.05 mm (3/4")
Hall Union
Auxiliary pipe
(male side)
Hall Union
Auxiliary pipe
(male side)
Packing
Hall Union
Auxiliary pipe
(male side)
Pipe size reducer (CZ-MA1P)
Pipe size reducer
Hall Union (CZ-MA3P)
Auxiliary pipe
(male side)
(Indoor)
Packing Connection pipe
(female side)
0 – 0.5 mm
Bar
Copper pipe
55
Torque
[18 N•m (1.8 kgf•m)]
[42 N•m (4.3 kgf•m)]
[55 N•m (5.6 kgf•m)]
[65 N•m (6.6 kgf•m)]
[100 N•m (10.2 kgf•m)]
Flare Nut
Connection pipe
(female side)
Flare Nut
Connection pipe
(female side)
Flare Nut
Connection pipe
(female side)
Flare Nut Packing Hall Union
Auxiliary pipe
(male side)
(Outdoor)
Pipe size expander
(CZ-MA2P)
Improper fl aring
Inclined Surface Cracked Uneven
damaged thickness
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.
Liquid side
Gas side