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2. Connect the center hose of the charging set to a vacuum pump with check valve, or vacuum pump adaptor.
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 10 minutes.
4. Close the Low and High side valves of the charging set and turn off the vacuum pump. Make sure that the
needle in the gauge does not move after approximately 5 minutes.
Note: BE SURE TO FOLLOW 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 the both 3-way valves. Position both of the valves to “OPEN” using a hexagonal
wrench (4 mm).
8. Mount valve caps onto the both 3-way valves.
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 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.
10.1.6 Connect The Cable To The Outdoor Unit
1. Remove the control board cover (metal) from
the unit by loosening two screws.
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.
4. Connect the power supply cord and
connecting cable between indoor unit and
outdoor unit according to the diagram as
shown.
5. Secure the power supply cord and connection
cables 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 the diagram as shown.
Note: Isolating Devices (Disconnecting means) should have minimum 3.0 mm contact gap.
Earth wire shall be Yellow/Green (Y/G) in colour and longer than other AC wires for safety reason.
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