Haier HDU-18CF03 Operating & Installation Manual page 28

Haier duct type air conditioner operation & installation manual indoor unit
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Installation Manual For Indoor Unit
Installation of indoor unit duct
1. Installation of air sending duct
This unit uses rounded duct, the diameter of the duct is 180mm.
The rounded duct needs to add a transition duct to connect with the air-sending duct
of indoor unit, then connect with respective separator. As Fig. 1 shown, all the fan speed
of any of the separatorís air outlet shall be adjusted approximately the same to meet
the requirement for the room air conditioner.
Indoor unit
2. Installation of air return duct
Use rivet to connect the air return duct on the air return inlet of the indoor unit, then
connect the other end with the air return blind. As Fig. 2 shown.
Air return blind
3 Thermal insulation of duct
Air-sending duct and air return duct shall be thermally insulated. First stick the gluey
nail on the duct, then attach the heat preservation cotton with a layer of tinfoil paper
and use the gluey nail cap to fix. Finally use the tinfoil adhesive tape to seal the
connected part. As Fig. 3 shown.
Soft connection
or static box
Fig. 1
Air return duct
heat preservation
Transition duct
Rounded duct
Indoor unit
Fig. 2
adhesive tape
nail cap
Fig. 3
Tie-in of air
Air distributary
Unit: mm



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