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3
INSTALLATION OF INDOOR UNIT
External view
129
Knock-out hole Ø125
(Air take-in port)
6-Ø4 Tapping screw hole Ø160
• Wired remote controller (RBC-AMT21E)
4
120
Opening hole on ceiling and placing of hanging bolt
• Considering the indoor unit and the hanged-up piping/wiring work, determine the installation position and direction.
• After installation position of the indoor unit has been determined, open a hole on the wiring and place the hanging bolt.
• For opening size of the ceiling and the hanging bolt pitch, see the external view.
• When the ceiling has already boarded, draw the drain pipe, refrigerant pipe, inter-unit wire between indoor and
outdoor units, central control system wire, and remote controller wire up to the position where pipes and wires
are connected before hanged-up the indoor unit.
The hanging bolts and nuts will be procured locally.
Installation of hanging bolt
Use M10 hanging bolts (4 pcs, to be local procure).
Matching to the existing structure, set pitch according to size in the unit external view as shown below.
New concrete slab
Install the bolts with insert brackets or anchor
bolts.
(Blade type
(Slide type
bracket)
bracket)
Installation of indoor unit
• Attach the nuts (M10 or W3/8: Procured locally) and
the attached washers (Ø34) to the hanging bolt.
• Put washers at up and down of T-groove of the hanging
bracket of the indoor unit to hang down the indoor unit.
• Using a level vial, check that four sides are horizontal.
(Horizontal degree: Within 5mm)
Hanging bolt pitch B
Main unit dimension A
16
Use existing angles or install new
support angles.
Reinforcing
steel
Anchor bolt
(Pipe hanging
anchor bolt)
Drain pipe connecting port for vinyl chloride pipe
(Inner dia. 32, VP. 25)
Refrigerant pipe connecting port
(Gas side ØF)
Hanging bolt
4-M10 screw
(Arranged locally)
44
49
Refrigerant pipe connecting port
(Liquid side ØG)
Ø26 Power supply, remote controller cable take-out port
Model
MMD-
AP0071BH, AP0091BH, AP0121BH
AP0151BH, AP0181BH
AP0241BH, AP0271BH, AP0301BH
AP0361BH, AP0481BH, AP0561BH
Hanging bolt
Nut
Steel flame structure
Hanging bolt
Hanging bolt
Support angle
Hanging bolt
(W3/8 or M10)
Nut
(W3/8 or M10)
Nut
(W3/8 or M10)
(1) Required those other than M10 flat washer at site.
(2) To prevent falling-off of bolt (safety), be sure to set it
just under the hanging bracket as shown in the figure.
8
75
Main unit dimension 800
41
Hanging bolt pitch 700
59
50
638
498
393
196
A
B
550
616
700
766
12.7
1000 1066 15.9
1350 1416 15.9
M10 or W3/8
4 pieces
M10 or W3/8
12 pieces
Existing concrete slab
Use a hole-in anchors, hole-in
plugs, or a hole-in bolts.
(1)
M10 flat washer
(Accessory)
(2)
M10 flat washer
(Accessory)
F
G
9.5
6.4
6.4
9.5
9.5
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