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Connecting drain pipe
Insert exible drain hose into the drain pipe of main unit as far as it will go. Fix it with hose band.
REQUIREMENT
Mount the exible drain hose using the hose band without using adhesive.
Drain pipe
Hose band
Flexible drain hose
19-EN
0.8" (20 mm)
or less
Flexible drain hose
Indoor unit
Hose band
0.4" (10 mm)
Check the draining
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In the test run, check that water drain is properly performed and water does not leak from the connecting part of
the pipes. When doing this, also check that no abnormal sounds are heard from the drain pump motor.
Check draining also when installed in heating period.
When the electrical and wiring work has been completed
Pour some water by following the method shown in the following figure. Then, while performing a cooling
operation, check that the water drains from the drain pipe connecting port (transparent) and that no water is
leaking from the drain pipe.
When the electrical and wiring work has not been completed
Disconnect the fl oat switch connector (3P: red) from the connector (CN34: red) on the printed circuit board
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inside the electrical control box. (Before doing this, the power must be turned off.)
Connect a 208V-230V supply voltage to (L1) and (L2) on the power supply terminal block. (Do not apply a
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208V-230V voltage to (Uv (U1)), (Uv (U2)), (A), (B) of the terminal block. Otherwise, the printed circuit board
may be damaged.)
Pour the water by following the method shown in the following fi gure.
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(Amount of water poured: 1.5L to 2L (1/3 to 0.5 gallon)
When the power is turned on, the drain pump automatically starts running. Check whether the water is draining
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from the drain pipe connecting port, and check that no water is leaking from the drain pipe.
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After checking that the water drains and there are no water leaks, turn off the power, connect the fl oat switch
connector to its original location (CN34) on the printed circuit board, and return the electrical control box to its
original position.
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EN
EN
ID
20-EN
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