Hitachi RCI-2.5-FSN3Ei Installation And Operation Manual page 10

UNITS INSTALLATION
3.1 INDOOR UNIT INSTALLATION
3.1.1 Factory-Supplied Accessories
Accessory
Paper pattern
(Carton board)
Cross
recessed head
screws
Washer with
insulation
Washer (M10)
Drain hose
Wire clamp
Scale
3.1.2 Initial Check
• Install the indoor unit with a proper clearance around it
paying careful attention of installation direction for the piping,
wiring and maintenance working space, as shown below.
• Provide a service access door near the unit piping
connection area on the ceiling.
Service access
door
• Check space between ceiling and false ceiling is enough as
indicated below.
• Check the ceiling surface is flat for the air panel installation
work.
Unit HP
RCI-1.0 to 2.5HP
RCI-3.0 to 6.0HP
Check down slope Pitch of Drain Piping is following the
specifications indicated in chapter
4 PMML0253A rev.5 - 08/2016
Qty Purpose
For adjusting space of
1 false ceiling opening and
position of the unit
4 For fitting paper pattern
4
For unit installation
4
1
For drain hose connection
2
For adjusting space of
1 false ceiling opening and
position of the unit
Service
Piping connection
access
door
Drain piping connection
Clearance:
10-20mm
Unit high
in false
ceiling
A(mm)
248
298
"5 DRAIN PIPING"

Opening Of False Ceiling
- Cut out the area for the indoor unit in the false ceiling and
install suspension bolts, as shown below:
Dimension of Opening: 860 to 910
Dimension of Suspension
Piping
Connection
Side
- Check to ensure that the ceiling is horizontally level,
otherwise water can not flow.
- Strengthen the opening parts of the false ceiling.
3.1.3 Installation

Mounting of suspension bolts
- Mount suspension bolts using M10 (W3/8) as size, as
shown.
For concrete slab:
Insert (100 to
150 to 160mm
Steel
Anchor Bolt (W3/8 or M10)

Mounting of indoor unit
- Mount the nuts and the washers to the suspension bolts.
Put the washer so that the surface with insulation can
faces downwards as shown below:
Suspension Bolts (Field-Supplied)
Washer with Insulation (Accessory)
Suspension Bracket (Attached Indoor Unit)
Washer (Accessory)
Nut (Field-Supplied)
Consider piping connection side before lift indoor unit.
-
- Lift the indoor unit by hoist, and do not put any force on
the drain pain.
Unit size: 840
Bolts: 760
4-Positions of
Suspension
Bolts
(mm)
Optional Panel
Drain Piping
Connection Side
For steel beam:
150Kg)
Concrete
I-Beam
Suspension Bolt (w3/8
(mm)
Nut (Field-Supplied)
Surface of Ceiling
or M10)