421
High ESP Duct Type
Indoor Unit
■ For the size of the inspection hole on the ceiling, please refer to the above drawing.
■ Before installation, nish 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.
(2) If necessary, make a hole for installation and inspection on the ceiling. (used for the situation with a ceiling)
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.
(3) Install the suspender (M10 bolts)
(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 gure below.
(b) Unless it is regulated to the level position, faults or errors might occur for the oater switch.
Choice of Blowing Wind from Blower
(when using the high performance lter)
The blower is provided with a red terminal and a white terminal. The standard wind choice has been set before
delivery. When the use of optional components, such as the high performance lter, causes the static pressure
rising, change the connection of the connector mounted on the side of the control cabinet, as shown as follows.
AD722MHERA
AD962MHERA
Notch grapping
Notch plug
Plug
Hoisting stud M10
Hoisting stud
Concrete
One side of piping
water supply
Level
PVC Tube
M
D
U
O
O
O
A
O
A
C
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