Toshiba MMU-AP0091H Installation Manual page 48

Ceiling opening and installation of hanging bolts
• Considering pipe/wire connecting work inside the ceiling after the indoor unit has been hanged, select an
installation place and determine piping direction.
• After installation place of the indoor unit has been determined, open the installation hole on the ceiling and
install the hanging bolts.
• For the ceiling opening size and the hanging bolt pitch, refer to the external view and the attached installation
pattern.
• If the ceiling has been already set up, draw the drain pipe, refrigerant pipe, indoor/outdoor inter-unit wire, wire
for central control system, and remote controller wire up to the position where pipes and wires are to be
connected before hanging the indoor unit.
Please procure the hanging bolts and nuts for
installation of the indoor unit at local site.
[How to use the attached installation pattern]
The installation pattern is attached inside of the package cap.
<In case of existing ceiling>
Use the pattern for positioning of the ceiling opening hole and the
hanging bolt.
<In case of new ceiling>
Use the pattern for positioning of the opening hole when setting up a
new ceiling.
• Install the indoor unit after installation of the hanging bolts.
• Using the attached pattern fixing screws (M5 × 16L: 4 pieces), attach
the installation pattern to the indoor unit.
(Screwing to installation brackets of the ceiling panel)
• When setting up the ceiling, open a hole along the outside dimension
of the installation pattern.
Opening a ceiling and installation of hanging bolts
[Treatment of ceiling]
The ceiling differs according to structure of building. For details, consult your constructor or interior finish
contractor.
In the process after the ceiling board has been removed, it is important to reinforce ceiling foundation (frame) and
to keep horizontal level of installed ceiling correctly in order to prevent vibration of ceiling board.
(1) Cut and remove the ceiling foundation.
(2) Reinforce the cut surface of ceiling foundation, and add ceiling foundation for fixing the end of ceiling board.
[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 (Pipe hanging
bracket) bracket)
Use existing angles or install new
support angles.
Reinforcing
steel
Anchor bolt
anchor bolt)
Hanging bolt
Nut
Steel flame structure
Hanging bolt
Hanging bolt Support angle
48
M10 or W3/8 4 pieces
M10 or W3/8 12 pieces
Indoor unit
Installation pattern
(Attached)
M5 × 16L screws (Attached)
These screws are exclusive to the
installation pattern. When installing
the ceiling panel, the other exclusive
screws attached to the ceiling panel
(sold separately) are used.)
Existing concrete slab
Use a hole-in anchors, hole-in
plugs, or a hole-in bolts.