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12.3.3 Connecting the Piping
CAUTION
Do not over tighten, over tightening may cause gas leakage.
Model
Piping size (Torque)
Gas
Liquid
WH-UXZ09KE5*, WH-UXZ12KE5*
ø12.7mm (1/2")
[55 N•m]
ø6.35mm (1/4")
[18 N•m]
12.3.3.1 Connecting the Piping to Outdoor Unit
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 valves and then tighten
with torque wrench to the specified torque as stated in
the table.
Local pipes can project in any of four directions.
Make holes in the pipe panels for the pipes to
pass through.
Be sure to install the pipe panels to prevent rain
from getting inside the outdoor unit.
[Removing the service panel].
(1) Remove the three mounting screws.
(2) Slide the service panel downward to release
the pawls.
After this, pull the service panel towards you to
remove it.
Front pipe panel
Rear pipe panel
Mounting
screws
Service panel
Rear direction
Side panel
Downward
direction
Forward
direction
Close the tube joining area with putty heat insulator
(local supply) without any gap as shown in right figure.
(To prevent insects or small animal entering.)
Putty or Heat
insulator
(local supply)
12.3.3.1.1 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 flared, the internal
surface of the flare will evenly shine
and be of even thickness. Since the
flare part comes into contact with
the connections, carefully check
the flare finish.
Improper flaring
InclinedSurface
damaged
Cracked Uneven
thickness
1. To cut
2. To remove burrs
3. To flare
Bar
Red arrow mark
Handle
Core
Yoke
Clamp
handle
Bar
0 – 0.5 mm
Copper pipe
Reamer
Point
down
Pipe
