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5.Drain Piping
CAUTION
●
Do not create an upper-slope or rise for the drain piping, since drain water can flow back to the indoor unit
causing leakage into the room when the system operation is stopped.
●
Do not connect the drain pipe with sanitary, sewage piping, or any other drainage piping.
●
When the common drain piping is connected with other indoor units, the connected position of each indoor
unit must be higher than the common drain pipe, also the pipe must be sized properly based on system capacity.
●
After performing drain piping work and electrical wiring, check to ensure that water drains properly per the
following procedure.
●
Checking with the Float Switch:
(A) Switch ON the power supply.
(B) Pour 58oz (1.8 liters ) of water into the drain pan.
(C) Check to ensure that the water drains properly and without any leaks.
After all the water has drained, pour another 58oz (1.8 liters ) of water into the drain.
(D) Switch ON the power supply and press the RUN/STOP button.
●
If pouring water through the access door.
●
To add water through the air outlet use the diagram below for guidance.
Insert the end of hose
between heat exchanger
and drain pan.
Insert the end of hose
between heat exchanger
and drain pan.
Access Door
Pump
Water
Drain Pan
Pump
Water
14
Installation and Maintenance
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