Airo ORIA 18 INT, Owners And Installation Manual

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lnstallation and Maintenance
5. Drain Piping
.ACAUTION
• 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 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, also the pipes 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.
• In case of pouring water through the access door.
1 nsert the end of hose
between heat exchanger
and drain pan.
Water (2000cc to 2500cc)
• In case of pouring water through the air outlet.
lnsert the end of hose
Water (2000cc to 2500cc)
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