3.1 INDOOR UNIT INSTALLATION
3.1.1
Factory-Supplied Accessories
Accessory
Qty
Purpose
Paper pattern
(Carton board)
1
For adjusting space of
false ceiling opening and
position of the unit
Cross
recessed head
screws
4
For fitting paper pattern
Washer with
insulation
4
For unit installation
Washer (M10)
4
Drain hose
1
For drain hose connection
Wire clamp
2
Scale
1
For adjusting space of
false ceiling opening and
position of the unit
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
Service
access
door
Piping connection
Drain piping connection
•
Check space between ceiling and false ceiling is enough as
indicated below.
•
Check the ceiling surface is flat for the air panel installation
work.
Clearance:
10-20mm
Unit high
in false
ceiling
Unit HP
A(mm)
RCI-1.0 to 2.5HP
248
RCI-3.0 to 6.0HP
298
Check down slope Pitch of Drain Piping is following the
specifications indicated in chapter
“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
4-Positions of
Suspension
Bolts
Optional Panel
Drain Piping
Connection Side
Piping
Connection
Side
(mm)
Dimension of Suspension
Bolts: 760
Unit size: 840
Dimension of Opening: 860 to 910
Unit size: 840
Dimension of Suspension
Bolts: 760
-
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:
For steel beam:
150 to 160mm
Insert (100 to
150Kg)
Concrete
Steel
Anchor Bolt (W3/8 or M10)
Suspension Bolt (w3/8
or M10)
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 can
faces downwards as shown below:
Suspension Bolts (Field-Supplied)
(mm)
Nut (Field-Supplied)
Washer with Insulation (Accessory)
Suspension Bracket (Attached Indoor Unit)
Washer (Accessory)
Nut (Field-Supplied)
Surface of Ceiling
Aprox. 52
102
Aprox. 50
-
Consider piping connection side before lift indoor unit.
-
Lift the indoor unit by hoist, and do not put any force on
the drain pain.
UNITS INSTALLATION
PMML0253A rev.5 - 08/2016
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