DOWNLOAD Panasonic CS-A28JKD / CU-A28JKD Service Manual ↓ Size: 5.64 MB | Pages: 64 in PDF or view online for FREE

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1. The inside and outside connecting cable can be connected without removing the front grille.
2.

• Ensure the colour of wires of outdoor unit and the terminal Nos. are the same to the indoor’s respectively.
• Earth wire shall be Yellow/Green (Y/G) in colour and longer than other AC wires for safety reason.

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• After selecting the best location, start installation according to Indoor/Outdoor Unit Installation Diagram.

1. Fix the unit on concrete or rigid frame firmly and

horizontally by bolt nut (ø10 mm).

2. When installing at roof, please consider strong wind and earthquake. Please fasten the installation stand firmly with bolt or

nails.

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.

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

A

B

C

D

A7JKD, A9JKD

474 mm

87 mm

18.5 mm

261 mm

A12JKD

570 mm

105 mm

18.5 mm

320 mm

A18JKD, PA18JKD, 
A24JKD, PA24JKD, 
A28JKD

612.5 mm

131 mm

19 mm

383 mm

Piping size

Torque

1/4” [6.35 mm]

[18 N•m (1.8 kgf.m)]

3/8” (9.52 mm)

[42 N•m (4.3 kgf.m)]

1/2” (12.7 mm)

[55 N•m (5.6 kgf.m)]

5/8” (15.88 mm)

[65 N•m (6.6 kgf.m)]

3/4” (19.05 mm)

[100 N•m (10.2 kgf.m)]

Do not over tighten, over tightening cause gas leakage.

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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.

• Be sure to connect the end of the charging hose with the push pin to the service port.

2. Connect the center hose of the charging set to a vacuum pump.
3. Turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves from 0 cmHg (0 MPa) to

-76 cmHg (-0.1 MPa). Then evacuate the air approximately ten minutes.

4. Close the Low side valve of the charging set and turn off the vacuum pump. Make sure that the needle in the gauge does not

move after approximately five minutes.
Note : BE SURE TO TAKE THIS PROCEDURE IN ORDER TO AVOID REFRIGERANT GAS LEAKAGE.

5. Disconnect the charging hose from the vacuum pump and from the service port of the 3-way valve.
6. Tighten the service port caps of the 3-way valve at a torque of 18 N•m with a torque wrench.
7. Remove the valve caps of both of the 2-way valve and 3-way valve. Position both of the valves to “OPEN” using a hexagonal

wrench (4 mm).

8. Mount valve caps onto the 2-way valve and the 3-way valve.

• Be sure to check for gas leakage.

• If gauge needle does not move from 0 cmHg (0 MPa) to -76 cmHg (-0.1 MPa), in step 

3 above take thefollowing measure:

- If the leak stops when the piping connections are tightened further, continue working from step 

3.

- If the leak does not stop when the connections are retightened, repair location of leak.
- Do not release refrigerant during piping work for installation and reinstallation.
- Take care of the liquid refrigerant, it may cause frostbite.