Hitachi RCI-1.0FSN3 Installation & Maintenance Manual page 17

(b) For Ceiling Opening already Completed
When the opening is already completed,
cut off the checking scale for the
dimension of opening and adjust the
clearance between the indoor unit and the
Attach the scale to the
bottom side of the unit.
Checking Scale for
Dimension of Opening
(c) For Opening of Existing Ceiling not
Completed yet
When installing the indoor unit to the
existing ceiling not completed, open
the false ceiling surface by adjusting
the outline of the pattern board (The
outline dimension of the pattern board
the position of the indoor unit as the
procedure (b) after hooking-up the indoor
unit.
Dimension for Opening
Pattern Board
P5414946-rev.1
TC-12001
Attach the scale to the
face of ceiling.
Adjust the height of the ceiling
and the unit at each corner.
Check the dimension of opening
at each side.
(d) Ceiling Not Completed with Panels yet
When the false ceiling is not completed
yet, attach the pattern board to the indoor
unit with the screw (M6), as shown in the
unit as the procedure (b) after ceiling is
Dimension for
Opening
Pattern Board
Ceiling Surface
(3) Tighten the nuts of the suspension brackets
LOCK-TIGHT paint to the bolts and nuts in
adjusting the space between the indoor
unit and the ceiling surface, maintain the
levelness of the indoor unit. If the levelness
is not maintained, it may cause a malfunction
Vinyl Tube
4-WAY CASSETTE
Dimension for
Opening
Suspension Bolt
Indoor Unit
Screw (M6)
Pattern Board
Drain Pipe
Level
Check the levelness of
4 corners at the unit by
taking a level or pouring the
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