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Checking the drainage and forming the pipings
Checking the drainage and forming the pipings
Checking the drainage
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.
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
18 Room Air Conditioner
Downward slope
Tip of drain hose
Air
dipped in water
Water
leakage
Ditch
Form the piping
Form the piping by wrapping the connecting
portion of the indoor unit with insulation mate-
rial 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.
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 sad-
dle or equivalent.
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 equivalent.
Less than
50mm gap
Seal small openings
around pipings with a
gum type sealer.
Taping
Drain hose
Pipings
Connecting cable
Trap is required to prevent water
from entering electrical parts.
Seal a small opening
around the pipings
with gum type sealer.
Trap
Trap
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