(1) Checking the Drainage
1) Room Type Indoor Unit
1. Remove the Grille from the cabinet
• Set the up-and-down air direction louver to
open position(horizontally) by finger pressure.
• Remove the securing screws.
• To remove the Grille, pull lower the left and
right side of the grille toward you (slightly tilted)
and lift it straight upward.
2. Check the drainage
• Pour a glass of water on the evaporator.
• Ensure if water flows drain hose of indoor unit
without any leakage.
2) Cassette Type Indoor Unit
• Drain piping must have down-slope (1/50 to 1/100):
be sure not to provide up-and-down slope to prevent
reversal flow.
• During drain piping connection, be careful not to exert
extra force on the drain port on the indoor unit.
• The outside diameter of the drain connection on the
indoor unit is 32mm.
• Be sure to execute heat insulation on the drain piping.
Drain Test
The air conditioner uses a drain pump to drain water.
Use the following procedure to test the drain pump
operation:
• Connect the main drain pipe to the exterior and leave
it provisionally until the test comes to an end.
• Feed water to the flexible drain hose and check the
piping for leakage.
• Be sure to check the drain pump for normal operating
and noise when electrical wiring is complete.
• When the test is complete, connect the flexible drain
hose to the drain port on the indoor unit.
5. Checking the Drainage and Pipe forming
Piping material: Polyvinyl chloride pipe VP-25
and pipe fittings
Heat insulation material: Polyethylene foam with
thickness more than 8 mm.
To Next Page
Loading...
