Hisense 12K - Drain Piping

6.Drain Piping
● Do not create an upper-slope or rise for the drain piping, since drain water can flow back to the
indoor unit and leakage into the room will occur when the system operation is stopped.
● Do not connect the drain pipe with sanitary or 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 must be large enough according to the unit
size and number of nuts.
● After performing drain piping work and electrical wiring, check to ensure that water flows smoothly as
in the following procedure.
● Checking with the Float Switch:
(A) Switch ON the power supply.
(B) Pour 1.8 liters of water into the drain pan.
(C) Check to ensure that the water flows smoothly or whether no water leakage occurs.
When water cannot be found at the end of the drain piping, pour another 1.8 liters of water into
the drain.
(D) Switch ON the power supply and press the RUN/STOP button.
Installation and Maintenance
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