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Service Manual
Checking the drainage
To check the drainage.
1. Pour a glass of water on the evaporator.
2. Ensure the water flows through the drain hose of the
indoor unit without any leakage and goes out the drain exit.
Drain piping
1. The drain hose should point downward for easy drain flow.
2. See below for examples of incorrect drain pipe applica-
tions, which will cause poor condensate flow.
Downward slope
Do not raise
Accumulated
drain water
Tip of drain hose
dipped in water
Air
Kinking
Water
leakage
Water
leakage
Ditch
Less than
50mm gap
Water
leakage
Checking the Drainage, Insulating the Pipe and Special Piping Applications
Checking the Drainage, Insulating the Pipe and Special Piping Applications