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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.
o 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 the step e above take
the following measure:
- If the leak stops when the piping connections are tightened further, continue working from step e.
- 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.
11.2.5 Connect the Cable to the Outdoor Unit
(FOR DETAIL REFER TO WIRING DIAGRAM AT
UNIT)
1 Remove the control board cover from the unit
by loosening the screw.
2 Cable connection to the power supply through
Isolating Devices (Disconnecting means).
o Connect approved type polychloroprene
sheathed power supply cord 3 x
1.5 mm
2
type designation 60245 IEC 57
or heavier cord to the terminal board, and
connect the others end of the cord to
Isolating Devices (Disconnecting means).
3 Connection cable between indoor unit and
outdoor unit shall be approved
polychloroprene sheathed 4 x 1.5 mm
2
flexible
cord, type designation 60245 IEC 57 or
heavier cord. Allowable connection cable
length of each indoor unit shall be 30 m or
less.
4 Connect the power supply cord and
connection cable between indoor unit and
outdoor unit according to the diagram below.
5 Secure the power supply cord and connection
cable onto the control board with the holder.
6 Attach the control board cover back to the
original position with screw.
7 For wire stripping and connection
requirement, refer to instruction 10.1.6 of
indoor unit.
11.2.6 Pipe 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.
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