Installation SiEN34-705
68 General Information
PRECAUTIONS FOR UPWARD DRAIN RAISING PIPING
! Install the drain raising pipes at a height of less than 500 mm.
! Install the drain raising pipes at a right angle to the indoor
unit. (Refer to Fig. 30)
Caution If the upward running drain hose leans at a slant, the float switch will malfunction and water will
leak.
(V2328)
2. After piping work is finished, check if drainage flows smoothly.
! Open the water inlet lid, add approximately 1 liter of water slowly and check drainage
flow.
(Refer to Fig. 31)
[Caution]
Drain piping connections
! Do not connect the drain piping directly to sewage pipes that smell of ammonia. The
ammonia in the sewage might enter the indoor unit through the drain pipes and corrode the
heat exchanger.
WRONG
Fig.30
(V2329)
Service cover
Plastic watering can
(Tube should be about 100 mm long.)
<Adding water through air discharge outlet>
Method of adding water
Fig.31
Drain pipe
<Adding water from inspection opening>
Service drain outlet
(with rubber plug).
(Use this outlet to drain water
from the drain pan.)
Inspection opening
>100
>100
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