Mitsubishi Electric MSC-GE20VB Installation Manual page 2

1-4. INSTALLATION DIAGRAM
ACCESSORIES
Check the following parts before installation.
<Indoor unit>
(1) Installation plate
Installation plate fixing screw
(2)
4 × 25 mm
(3) Remote controller holder
Fixing screw for (3)
(4)
3.5 × 16 mm (Black)
(5) Battery (AAA) for (6)
(6) Wireless remote controller
Felt tape
(7)
(For left or left-rear piping)
<Outdoor unit>
(8) Drain socket <MSH type only>
PARTS TO BE PROVIDED
AT YOUR SITE
(A) Indoor/outdoor unit connecting wire*
(B) Extension pipe
(C) Wall hole sleeve
(D) Wall hole cover
(E) Pipe fixing band
(F) Fixing screw for (E) 4 x 20 mm
(G) Piping tape
(H) Putty
Drain hose
(I) (or soft PVC hose, 15 mm inner diam-
eter or hard PVC pipe VP16)
(J) Refrigeration oil
(K) Power supply cord*
* Note:
Place indoor/outdoor unit connecting wire (A) and
power supply cord (K) at least 1 m away from the
TV antenna wire.
2. INDOOR UNIT INSTALLATION
2-1. FIXING OF INSTALLATION PLATE
• Find a structural material (such as a stud) in the wall and fix installation plate (1) horizontally
with fixing screws (2).
• To prevent installation plate (1) from vibrating, be sure to install the fixing screws in the holes
indicated in the illustration. For added support, fixing screws may also be installed in other
holes.
• When the knockout is removed, apply vinyl tape to the knockout edges to prevent damaging
the wires.
• When bolts recessed in the concrete wall are to be utilized, secure installation plate (1) 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.
2-2. WALL HOLE DRILLING
1) Determine the wall hole position.
2) Drill a ø65 mm hole. The outdoor side should be 5 to
7 mm lower than the indoor side.
3) Insert wall hole sleeve (C).
<GE20, 25>
Bind the line to the center hole.
Level
Installation p p late ( ) (1)
102 mm
or more
Wall
Fixing screw (2)
Align the plumb line
with the mark .
* Same for left hole.
<GE35>
Bind the line to the center hole.
Installation p p late ( ) (1)
Level
182 mm
Wall
or more
Fixing screw (2)
Align the plumb line
with the mark .
* Same for left hole.
1
5
1
2
2
1
1
1
1
1
1
1
2 to 5
2 to 5
1
1
1 or 2
1
1
Appearance of the
outdoor unit may
differ from some
models.
Wall
ø65 mm
Outdoor side
Ceiling
79 mm or more 109 mm or
more for left and left back
piping (using spacer)
190 mm
or more
100 mm 100 0
Wall
Insert the Align the Center of
scale. * scale with ø65 mm hole
the line. *
Plumb
Ceiling
79 mm or more 109 mm or
more for left and left back
piping (using spacer)
182 mm
or more
Wall
100 mm
Center of
Insert the Align the
ø65 mm hole
scale. * scale with
Plumb
the line. *
Cut off
the extra
length.
After the leak test, apply
insulating material tightly so
that there is no gap.
When the piping is to be at-
tached to a wall containing
metals (tin plated) or metal
netting, use a chemically
treated wooden piece 20 mm
or thicker between the wall
and the piping or wrap 7 to 8
turns of insulation vinyl tape
around the piping.
To use existing piping, per-
form COOL operation for
30 minutes and pump down
before removing the old air
conditioner. Remake flare
according to the dimension
for new refrigerant.
100 mm
or more
(8)
Units should be installed by licensed contractor according to local code
requirements.
2-3. CONNECTING WIRE FOR INDOOR POWER SUPPLY
• Use special room air conditioning circuit.
• Power supply cord length (Lead to left / Lead to right) : 0.3 m / 1 m.
• Take out power supply cord from the left to right bottom corner of the indoor unit.
Power supply cord
2-4. CONNECTING WIRES FOR INDOOR UNIT
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 VA clamp.
4) Pass indoor/outdoor unit connecting wire (A) from the back of the indoor unit and process the
end of the wire.
5-7 mm
5) Loosen terminal screw, and connect first the earth wire, then indoor/outdoor unit connecting
wire (A) to the terminal block. Be careful not to make mis-wiring. Fix the wire to the terminal
block securely so that no part of its core is appeared, and no external force is conveyed to the
connecting section of the terminal block. Firmly tighten the terminal screws to prevent them
from loosening. After tightening, pull the wires lightly to confirm that they do not move.
6) Secure indoor/outdoor unit connecting wire (A) and the earth wire with the VA clamp. Never fail
to hook the left claw of the VA clamp. Attach the VA clamp securely.
15 mm
Lead wire
• For future servicing, give
extra length to the con-
necting wires.
• Make earth wire a little
longer than others. (More
than 35 mm)
• Do not fold the excess
wire, or cram it into small
space. Take caution not to
damage the wires.
Note: Do not place the
wires between the indoor
unit and the installation
plate (1). Damaged wire
could cause heat genera-
tion or fire.
Indoor
Pipe fixing
unit
band (E)
Wall hole
Fixing
sleeve (C)
screw (F)
Be sure to use wall hole sleeve (C) to
prevent indoor/outdoor connecting wire (A)
from contacting metal parts in the wall and
to prevent damage by rodents in case the
wall is hollow.
Outdoor unit installation
150
mm
2/4-10 mm × 21 mm slot
Drain piping for outdoor unit
<MSH type only>
• Provide drain piping before indoor and
outdoor piping connection.
• Connect drain hose (I) I.D.15 mm as shown
in the illustration.
• Make sure to provide drain piping with a
( ) (I) downhill grade for easy drain flow.
Note:
Do not use drain socket (8) in cold regions.
Drain may freeze and make the fan stop.
Green/Yellow : Ground
Blue : N
Brown : L
Electrical cover
Indoor terminal block
MS type MSH type
(COOL ONLY) (COOL & HEAT)
<MS type>
Earth plate
Power supply
cord
L L
Indoor terminal
3 N 2 1
block
Indoor/outdoor unit
connecting wire (A)
MSC
MU & MUX
Outdoor terminal
block
2 1 L N
To power To power
supply supply
Power supply cord (K)
Wall hole cover (D)
Seal the wall hole
gap with putty (H).
Fix the pipe to
wall with pipe
fixing band (E).
800 mm
500 mm
Air inlet
Air outlet
40 mm
VA clamp
Fixing screws
Indoor/outdoor unit
connecting wire (A)
<MSH type>
Earth plate
Power supply
cord
Indoor terminal
3 N 2 1
block
MSC
MUH & MXZ
Outdoor terminal
block
3 N L N