11.3.5. CONNECT THE CABLE TO THE OUTDOOR UNIT

1.Remove the control board cover from the unit by loosening the screw.

2.Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 × 2.5 mm2 (E18CK, E21CK) flexible cord, type designation 245 IEC 57 or heavier cord.

3.Secure the cable onto the control board with the holder (clamper).

4.Attach the control board cover back to the original position with the screw.

11.3.6. 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.

DISPOSAL OF OUTDOOR UNIT DRAIN WATER

•If a drain elbow is used, the unit should be placed on a stand which is taller than 3 cm.

•If the unit is used in an area where temperature falls below 0°C for 2 or 3 days in succession, it is recommended not to use a drain elbow, for the drain water freezes and the fan will not rotate.

CHECK THE DRAINAGE

•Open front panel and remove air filters.

(Drainage checking can be carried out without removing the front grille.)

•Pour a glass of water into the drain tray-styrofoam.

•Ensure that water flows out from drain hose of the indoor unit.

EVALUATION OF THE PERFORMANCE

•Operate the unit at cooling operation mode for fifteen minutes or more.

•Measure the temperature of the intake and discharge air.

•Ensure the difference between the intake temperature and the discharge is more than 8°C.

CHECK ITEMS

Is there any gas leakage at flare nut connections?

Has the heat insulation been carried out at flare nut connection?

Is the connecting cable being fixed to terminal board firmly?

Is the connecting cable being clamped firmly?

Is the drainage OK?

(Refer to “Check the drainage” section)

Is the earth wire connection properly done?

Is the indoor unit properly hooked to the installation plate? Is the power supply voltage complied with rated value?

Is there any abnormal sound?

Is the cooling operation normal?

Is the thermostat operation normal?

Is the remote control’s LCD operation normal?

Is the air purifying filter installed?

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