Panasonic CS-E12QB4RW, Service Manual

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11.2.3 Connect the Piping
11.2.3.1 Connecting the Piping to Indoor Unit
Please make flare after inserting flare nut (locate at
joint portion of tube assembly) onto the copper pipe.
(In case of using long piping)
Connect the piping

Align the center of piping and sufficiently tighten
the flare nut with fingers.

Further tighten the flare nut with torque wrench in
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)]
11.2.3.2 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 valve and then tighten
with torque wrench to the specified torque as stated in
the table.
11.2.3.3 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
* Kindly consult authorised dealer for connectivity validity.
11.2.4 Evacuation of the Equipment
WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND
PIPES in the following procedure.
1 Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-way
valve.
o
Be sure to connect the end of the charging hose with the push pin to the service port.