Haier AU282AHBEA Service Manual page 167

(2) If necessary, cut the opening installation and checking needed on the ceiling. (If has ceiling)
Before installation, finish the preparation work of all the pipes (refrigerant, drainage) and wire (wire controller
connection wire, indoor and outdoor unit connection wire) of indoor unit, so that after installation, they can be
immediately connected with outdoor unit.
Cut the opening on the ceiling. Maybe it needs to strengthen the ceiling to keep the ceiling even and flat and
prevent the ceiling from vibration. For details, please consult to the builder.
(3) Suspending bolts installation
Use care of the piping direction when the unit is installed.
(Use M10 screw bolt)
In order to bear the weight of the unit, for existed ceiling,
using foundation screw bolt, for new ceiling,using burying
embedded screw bolt, burying screw bolt or spot supplied
other parts.
Before going on installation, adjust the gaps with ceiling.
4. Installation of indoor unit
Fix the indoor unit to the hanger bolts.
If required, it is possible to suspend the unit to the beam,
etc.
Directly by use of the bolts without using the hanger bolts.
Note
When the dimensions of main unit and ceiling holes does not match, it can be adjusted with the slot holes of hanging
bracket.
Adjusting to the levelness
(a) Adjust the out-of levelness using a level or by the following method.
Make adjustment so that the relation between the lower surface of the unit proper and water level in the hose
becomes as given below.
Piping side
Supply water
Water level
0~5 mm
(0~0.2")
(b) Unless the adjustment to the levelness is made properly, malfunctioning or failure of the float switch may occur.
5. Drain Piping
(a) Drain piping should always be in a downhill grade (1/50~1/100) and avoid riding across an elevation or making traps.
Good piping
Suspension
1.5m ~ 2m
bolts
Heat A downhill grade
insulation of 1/100 or more
PVC hose
Piping side
Supply water
Water level
0~5 mm
(0~0.2")
Bring the piping side slightly lower.
Improper piping
Air vent
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Built-in anchor
Built-in plug
suspending bolt M10
Hanging bolt
M10 nut
M10 spring washer
Main unit
PVC hose
Avoid riding across an elevation
Keep free from traps
Do not pipe under water
Insert
Concrete
M10 washer