Haier AD092XLERA Service Manual page 11

When installing the ceiling concealed type indoor unit, a specially designed return air bellows shall be
installed, as shown in Figure 3, Figure 4.
Figure 3
Ceiling
Air supply
Figure 4
Air outlet grille
Air supply
No obstacles
within 1 m(0Pa)
Each air return and supply duct should fix to the floor precast slab by using an iron stand. Use glue to seal
the interface closely. Recommend the distance between the air return duct and the wall is more than
150mm.
The distance between air duct outlet and air conditioner outlet is according to the length of actually
installed air duct and in service behavior of the static pressure terminal: Installation sketch map for long
and short air duct is showed below, when connect to short air duct, using low static terminal (terminal color
is white), the distance between air duct outlet and air conditioner outlet is no more than 0.5m; when
connect to long air duct, using middle static terminal (terminal color is red), the distance between air duct
outlet and air conditioner outlet could be within 5m at this point.
Figure 5
air return duct
air return shutter
Drain piping of condensed water should keep a downhill grade of 1% or more. Use insulating pipe to cover
the drain piping of condensed water to keep warmth.
As figure shown, suspend and install the unit.
M8 broad foundation bolt
Figure 6
M8 suspension screw
M8 broad lock ring
Commercial Air Conditioner
Installing building roof
0.5m(0Pa)or 5m(50Pa)
A
Unit
Air outlet duct Return air
Unit
Return air
sling dog
drain piping
transition
air outlet
air diffuser
air duct duct
M8 nut
-11-
Model: AD09/12/14/182XLERA
Return air bellows
Return air bellows
joint of air diffuser
Unit