Hitachi RCD-2.5FSN2, Service Manual, Page: 30 / 429

2 Unit installation
18
SMGB0077 rev.0 - 01/2013
N O T E
• If a false ceiling has already been installed, complete all piping and wiring work inside the ceiling before
hooking-up the indoor unit.
• Secure the indoor unit using the nuts, flat washers and spring washers. (These nuts and washers are supplied,
4 pieces each)
Adjusting the space between indoor units and false ceiling opening
Adjust the indoor unit to the correct position while checking with the pattern for installation.
Checking pattern for dimension of opening
Pattern board for installation
Packing (Corrugated board)
For ceiling already completed with panels.
Indoor unit
Attach this side of the chec-
king pattern to the inner side
of the opening of the ceiling
Attach this side of the checking
pattern to the lower side of the unit
Indoor unit
Attach this side of the
checking pattern to
the ceiling panel
Checking
pattern
Check the height of the
ceiling at each corner of
the unit
Check the dimension
of opening at each
side of the unit
Attach this side of
the checking pat-
tern to the outer
side of the unit
Ceiling panel
Checking pattern
Ceiling not completed with panels yet.
Pattern paper for installation
Dimension
for opening
Unit
Suspension bolt
Surface of ceiling
Pattern board for installation
Screw (M6)
Dimension
for opening
Tighten the nuts of the suspension brackets after the adjustment is completed. Apply LOCK-TIGHT paint to the bolts and
nuts in order to prevent them from loosening. If not done, abnormal noises or sounds may occur and the indoor unit may
come loose.