24
OPEN
CLOSE
Gas side
Liquid side
Outdoor unit
Two-way valve
Three-way valve
Indoor unit
Vacuum pump
Close
Close
•
If gauge needle does not move from 0 cmHg (0 MPa) to –76 cmHg (–0.1 MPa), in step
above take the following measure:
- 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.
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
fi
ve 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.
WARNING
This equipment must be properly earthed.
•
Earth wire shall be Yellow/Green (Y/G) in colour and longer than other
AC wires for safety reason.
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)
fl
exible 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
1
2
3
Colour of wires
Terminals on the indoor unit
1
2
3
3. Secure the cable onto the control board with the holder.
4. Attach the control board cover back to the original position with screw.
5. For wire stripping and connection requirement, refer to instruction of
indoor unit.
Holder
Indoor unit
Indoor & outdoor connection cable
Earth wire
longer than
others
AC wires
for safety
reason
Terminal Board
Connect the cable to the Outdoor Unit
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
+
& *PM 0.1 Filter
•
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.
•
•
*Filters applicable for selected models only.
Air Filter
Ag Clean/
PM 0.1 Filter
Slots
Front
Panel
Ag Clean/
PM 0.1 Filter
Содержание CS/CU-HU12AKY Series
Страница 15: ...Note 15 English Troubleshooting...
