Panasonic CS/CU-KU12ZKY Series Operating & Installation Instructions Manual page 24

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
- If the leak stops when the piping connections are tightened further, continue working from step
- 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.
Connect the cable to the Outdoor Unit
1. Remove the control board cover from the unit by loosening the screw.
2. Connection cable between indoor unit and outdoor unit shall be
approved polychloroprene sheathed 4 x 1.0 mm2 (1.5 ~ 1.8HP),
4 x 1.5 mm2 (2.0HP) or 4 x 2.5mm2 (2.5HP) flexible cord, type designation
IS 694 or 60245 IEC 57 or heavier cord. Do not use joint connection cable.
Replace the wire if the existing wire (from concealed wiring, or otherwise)
is too short.
Terminals on the outdoor unit
Colour of wires
Terminals on the indoor unit
3. Secure the cable onto the control board with the holder.
4. Attach the control board cover back to the original position with screw.
For wire stripping and connection requirement, refer to instruction
indoor unit.
•
Earth wire shall be Yellow/Green (Y/G) in colour and longer than other
AC wires for safety reason.
Piping Insulation
1. Please carry out insulation at pipe connection portion as mentioned in Indoor/Outdoor Unit Installation Diagram.
Please wrap the insulated piping end to prevent water from going inside the piping.
2. If drain hose or connecting piping is in the room (where dew may form), please increase the insulation by using
POLY-E FOAM with thickness 6 mm or above.
Installation of Ag Clean
•
Open the front panel and remove air fi lters.
•
Take out Ag Clean+ & PM 0.1 filter placed behind the installation holder.
•
Put the Ag Clean+ or PM 0.1 filter into place as shown in illustration at right.
(i) There are slots at backside of Air Filter as shown.
(ii) Put the Ag Clean+ or PM 0.1 filter in the slots as shown.
(iii) Put the Air Filter back in position.
*Ag Clean+ filter applicable to specific models only.
24
1 2 3
1 2 3
& PM 0.1 Filter
+
Liquid side
Indoor unit
Gas side
OPEN
CLOSE
Vacuum pump
above take the following measure:
Indoor & outdoor connection cable
of
This equipment must be properly earthed.
Ag Clean+/
PM 0.1 Filter
Slots
Ag Clean+/
PM 0.1 Filter
Outdoor unit
Two-way valve
Close
Three-way valve
Close
.
Terminal Board
Earth wire
longer than
others
AC wires
for safety
reason
Holder
Indoor unit
WARNING
Front
Panel
Air fi lter