Panasonic WH-SDC03H3E5 Service Manual page 80

11.4.3 Connecting The Piping
11.4.3.1 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.
Model
UD03*E5* and ø12.7 mm (1/2")
UD05*E5*
UD07*E5* and ø15.88 mm (5/8")
UD09*E5*
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
Piping size (Torque)
Gas Liquid
ø6.35 mm (1/4")
[55 N•m] [18 N•m]
ø6.35 mm (1/4")
[65 N•m] [18 N•m]
Handle
Bar
Yoke
Core
Clamp
handle Red arrow mark
3. To flare
Be sure to use two spanners to tighten.
(If the nuts are overtightened, it may cause the flares
to break or leak.)
Close the tube joining area with putty heat insulator
(local supply) without any gap as shown in below
figure. (To prevent insects or small animal entering.)
(For UD07*E5* and UD09*E5* only)
Improper flaring
0 – 0.5 mm
Bar
Inclined Surface
Copper pipe
damaged
80
Spanner
or Wrench
Putty or Heat
insulator
(local supply)
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
Cracked Uneven
the connections, carefully check
thickness
the flare finish.
Torque
wrench