2 Unit installation
RCIM - 4-way cassette (compact)
SMGB0099 rev.0 - 12/2016
30
Lift the unit carefully, without exercising pressure on the 
drain pan.
Fit the nuts, at washers and spring washers supplied (4 
of each) to secure the indoor unit.
Check that the condensate discharge system in the indoor 
unit works correctly. To do so, check the level of the drain 
pan using a spirit level.
Drain Pan
Suspension 
bracket
Suspension 
bolts (4)
 
Adjusting the space between the indoor unit and the opening in the false ceiling
Pattern Board for Installation and Scale for Dimension of Opening
1  For installation work, the pattern board is required.  
The pattern board for installation and the checking 
scale are printed on the back side of the packing. 
2  Cut off the checking scale for dimension of 
opening from the packing.
Checking scale for 
dimension of opening
Pattern board 
for installation
Packing 
Corrugated Board)
1  Indoor unit
2  Attach this side of the checking scale to the inner side of the 
opening of the ceiling
3  Attach this side of the checking scale to the lower side of the 
unit
4  Attach this side of  the checking scale to the ceiling panel
5  Checking scale.
6  Check the height of the ceiling at each corner of the unit
7  Check the dimension of the opening at each side of the unit
8  Attach this side of the checking scale to the outer side of the 
opening
9  Ceiling Panel
For panelled ceilings.
Once adjusted, tighten the suspension bracket nuts.
Apply a thread-locking product to the bolts and nuts to prevent them from loosening. Otherwise, abnormal noise may be 
caused by mechanical vibrations and the indoor unit may become loose.
2.2.3  Accessories supplied with the air panel: P-AP56NAM
Check that the following accessories are supplied with the unit.
? NOTE
Please contact your HITACHI distributor if any of the accessories has not been supplied with the unit.
Accessory Appearance Quantity Purpose
Long bolt (M5) 4 For panel xing.