Checking The Drainage And Forming The Pipings - Heat Controller Energy Knight B/A-HMC09AS Service Manual

(5) Checking the Drainage and
forming the pipings
1) Checking the drainage
1. To remove the front panel from the indoor unit,
remove the front panel from the indoor unit cabinet.
Set the air direction louvers up-and-down to the posi-
tion(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. (9K Btu models: 2EA,12K Btu models: 3EA)
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
Screw
Downward slope
Tip of drain hose
Less than
Air
dipped in water
50mm gap
Water
leakage Ditch
2) Form the piping
1. Form the piping by wrapping the connecting por-
tion of the indoor unit with insulation material 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 equivalent.
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Taping
Drain
hose
Pipings
Connecting
cable
Seal a small opening
around the pipings
with gum type sealer.
Trap