Hitachi RCI-1,0FSR Manuel D'installation Et De Fonctionnement page 39

INDOOR UNIT INSTALLATION
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.
Piping
Connection
Service Access
Service
Door
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

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
20
opening 860 to 910
(Unit size)
840
760
(Dimension of
suspension bolts)
Piping connection
side
connection side
5 PMML0547 rev.0 - 11/2020
Drain Piping
Connection
Clearance:
10-20mm
Unit height
In False
Ceiling
2500
A(mm)
238
288
"5 DRAIN PIPING".
20
4-12 x 32 Holes
(for suspension bolt)
4-Positions of
suspension bolts
Drain piping
(M10 or W3/8)
(Field-supplied)
• 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
(mm)
Mount suspension bolts using M10 (W3/8) as size, as shown.
150 to 160mm
I-Beam

Mounting of Indoor Unit
• Mount the nuts and the washers to the suspension bolts.
Put the washer so that the surface with insulation faces
downwards as shown below:
Washer with insulation (accessory)
• Consider piping connection side before lifting indoor unit.
• Lift the indoor unit by hoist, and do not put any force on the
drain pan.
• Secure the indoor unit using the nuts and washers.
(mm)
Suspension
bracket
Drain pan
?
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, and flat washers.
For concrete slab:
Insert (100 to 150Kg)
Concrete
Steel
Anchor Bolt (W3/8 or M10)
For steel beam:
Suspension Bolt
(W3/8 or M10)
Suspension bolts
(field-supplied)
Nut (field-supplied)
Suspension bracket
(attached indoor unit)
Washer (accessory)
Nut (field-supplied)
Surface of ceiling
Suspension bolt
(mm)