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4. INDOOR UNIT INSTALLATION
4-1 FIXING OF INSTALLATION PLATE
•
Find a structural material (such as a stud) in the wall and fix installation plate
horizontally.
When bolts recessed in the concrete wall are to be utilized, secure the installation
plate
using 11 × 20 · 11 × 26 oval hole (450 mm pitch).
If the recessed bolt is too long, change it for a shorter one available in the market.
4-2 WALL HOLE DRILLING
1 Determine the wall hole position.
2 Drill a 75 mm hole so that outside can be lower than inside.
3 Insert the wall hole sleeve
.
Positioning of the holes on the wall
Be sure to use wall hole sleeve to prevent the outdoor connecting wires from
contacting with metal part in the wall and to prevent damage by rat in case the wall
is hollow.
Wall hole sealing and fixing pipe to wall
72 mm or more
100 mm or more for left
and left back piping (using
spacer)
200 mm or more
(off the wall)
Plumb
Installation
plate fixing
screw
4 × 25 mm
120 mm or more
(off the wall)
Insert the scale.
Align the scale with the line.
Installation plate
Hole of dia.
75 mm
Repeat the same procedure for the left hole.
Wall hole
75 mm dia.
(Indoor side)
(Wall hole cross section)
Wall thickness
One scale
Wall hole sleeve
Cut with 1 extra
scale length.
Installation
plate
To prevent the installation plate from vibrating, be sure to fix the holes
as indicated by the arrows
{
.
Wall hole
sleeve
Indoor unit
Wall hole cover
Seal the wall hole
gap with putty .
Fix the pipe to wall with
pipe fixing band
.
Cut off the
extra length. Pipe fixing
band
Fixing screw
Align the plumb line
with the mark
.
Bind the line to the center hole.
100 mm
4-3 CONNECTING WIRE SPECIFICATIONS
•
Use special room air conditioning circuit.
4-4 INDOOR AND OUTDOOR CONNECTING WIRE CON-
NECTION
You can connect indoor/outdoor lead wire without removing the front panel.
1 Open the front panel.
2 Remove one screw holding the electrical cover, then remove the cover.
3 Remove the VA clamp and the cord clamp.
4 Pass the indoor/outdoor unit connecting wire from the back of the indoor unit and
process the end of the wire, then connect it to the terminal block.
5 Replace the fixture and electrical cover securely.
Indoor
terminal block
ELECTRICAL COVER
Fixing screws
Securely push the wire into
the terminal block until no
part of its core is appeared.
Indoor/outdoor unit connecting wire
VA clamp
Never fail to hook the left claw on
the wire fixture to secure indoor/
outdoor unit connecting wire
.
15 mm
35 mm
Indoor terminal block
Indoor/outdoor unit
connecting wire
4-core 1.0 mm
2
Outdoor terminal block
<Connection details>
Loosen terminal
screw.
Lead wire
Terminal
block
WARNING
Never cut the indoor and outdoor unit connecting wire and connect it to other wires.
It may cause a fire.
Do not bundle the spare wire, but put it as shown below.
Indoor/outdoor unit connecting wire
Specification
Cable 4-core 1.0 mm
2
, in conformity
with Design 245 IEC 57.
WARNING
•
Use the indoor/outdoor unit connecting wire that meets the Standards to connect
the indoor and outdoor units and fix the wire to the terminal block securely so that
no external force is conveyed to the connecting section of the terminal block.
Incomplete connection or fixing of the wire could result in a fire.
•
Attach the electrical cover securely. If it is attached incorrectly, it could result in a
fire or an electric shock due to dust, water, etc.
Earth wire
(green/yellow)
1800 mm or more
from the floor