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.
AUTO SWITCH OPERATION
The following operations can be performed by pressing the
“AUTO”switch.
1. AUTO OPERATION MODE
The Auto operation will be activated immediately once the
Auto Switch is pressed.
2. TEST RUN OPERATION (FOR PUMP DOWN/SERVICING
PURPOSE)
The Test Run operation will be activated if the Auto Switch
is pressed continuously for more than 5 sec. to below 8 sec.
A“beep”sound will occur at the fifth sec., in order to identify
the starting of Test Run operation.

11.3.5. 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. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 ×1.5 mm2flexible cord,
type designation 245 IEC 57 or heavier cord.
3. Secure the cable onto the control board with the holder (clamper).
4. Cable connection to the power supply through knife switch (Disconnecting means).
• Connect the approved polychloroprene sheathed power supply cable (3 x 2.5 mm2), type designation 245 IEC 57 or heavier
cord to the terminal board, and connect the other end of the cable to knife switch (Disconnecting means).
Note: Knife switch (Disconnecting means) should have minimum 3.5 mm contact gap.
− Secure the cable onto the control board with the holder (clamper).

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.
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE