Haier AB072MRERA Service Manual page 354

3. Preparation before Installation
(1) Location relation between inspection hole on the ceiling and the unit and
the suspender (unit: mm).
The installation distance with mark * can be adjusted due to the actual space
(Max: 510mm, Min: 370mm).
(2) If necessary, make a hole for installation and inspection on the ceiling. (used for the situation with a ceiling)
■ For the size of the inspection hole on the ceiling, please refer to the above drawing.
■ Before installation, finish all the preparations for all piping connected to indoor units (refrigerant, water drainage)
and wiring (connection line of the wired control, connection line between indoor units and outdoor unit) so that
they can be connected with indoor units after installation.
■ For the inspection hole, the ceiling might be reinforced to keep the evenness of the ceiling and avoid the vibration
of the ceiling. For details, please consult the construction contractor.
(3) Install the suspender (M10 bolts)
In order to support the weight of the unit, use barb bolts in the
situation with a ceiling. In the situation with the new ceiling, use
inlaid bolts, embedded bolts or other parts provided on site. Before
proceeding the installation, adjust the gap between the bolt and the
ceiling.
(4) Installation of indoor units
■ Fix the indoor unit with the hoisting stud. If necessary, the machine
can be hanged on the beam with bolts instead of the hoisting stud.
NB:
When the sizes of the master unit don't match the hole on the ceiling, regulate the slot on the hanging bracket.
Adjusting the level
(a) Adjust the level with a level meter or according to the following ways:
■ Make the adjustment as shown in the figure below.
346
Notch grapping
Plug
Notch plug
Concrete
Hoisting stud M10
Hoisting stud
L