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Checking the Drainage
1. To remove the front panel from the indoor unit.
• Set the air direction louvers up-and-down to the
position(horizontally) by hand.
• Remove the securing screws that retain the front
panel. Pull the lower left and right sides of the
grille toward you and lift it off.
Pull the right and
the left side.
2. To check the drainage.
• Pour a glass of water on the evaporator.
• Ensure the water flows through the drain hose of
the indoor unit without any leakage and goes out
the drain exit.
3. Drain piping
• The drain hose should point downward for easy
drain flow.
• Do not make drain piping.
Accumulated
Do not raise
drain water
Water
Water
Waving
leakage
leakage
Downward slope
Tip of drain hose
Air
Less than
dipped in water
50mm gap
Water
leakage
Ditch
Form the Piping
1. Form the piping by wrapping the connecting
portion of the indoor unit with insulation materi-
al and secure it with two kinds of vinyl tapes.
• If you want to connect an additional drain hose,
the end of the drain outlet should be routed above
the ground. Secure the drain hose appropriately.
2. In cases where the outdoor unit is installed
below the indoor unit perform the following.
• Tape the piping, drain hose and connecting cable
from down to up.
• Secure the tapped piping along the exterior wall
using saddle or equivalent.
Seal small openings
around pipings with a
gum type sealer.
Trap is required to prevent water
from entering into electrical parts.
3. In cases where the Outdoor unit is installed
above the Indoor unit perform the following.
• Tape the piping and connecting cable from down
to up.
• Secure the taped piping along the exterior wall.
Form a trap to prevent water entering the room.
• Fix the piping onto the wall by saddle or equiva-
lent.
Installation
Taping
Drain
hose
Pipings
Connecting
cable
Seal a small opening
around the pipings
with gum type sealer.
Trap
Trap
Service Manual 23
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