Indoor Unit Installation - Mitsubishi Electric MSZ-AS90VGD Installation Manual

2. INDOOR UNIT INSTALLATION

2-1. FIXING OF INSTALLATION PLATE
in other holes.
ing 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).
2-2. WALL HOLE DRILLING
1) Determine the wall hole position.
2) Drill a ø75 mm hole. The outdoor side should be
5 to 7 mm lower than the indoor side.
3) Insert wall hole sleeve (C).
Installation plate (1)
Level
120 mm
or more
Wall
Fixing screw (2)
In the case of left or left rear piping.
union is shifted 56/40 mm to the left
2-3. CONNECTING WIRES FOR INDOOR UNIT
You can connect indoor/outdoor unit connecting wire (A) without removing the front panel.
1) Open the front panel.
2) Remove electrical cover.
3) Remove VA clamp.
the end of the wire.
6) Replace the VA clamp and electrical cover securely.
15 mm
55 mm
Lead wire
Indoor/outdoor unit connecting wire (A)
• For future servicing, give extra length to
the connecting wires.
(More than 60 mm)
• Do not fold the excess wire, or cram it into
the wires.
• Be sure to attach each screw to its cor-
respondent terminal when securing the
Note: Do not place the wires between the
indoor unit and the installation plate (1).
Damaged wire could cause heat genera-
Wall
ø75 mm
Ceiling 72 mm or more/
130 mm or more
for left/left rear
piping (using
spacer)
220 mm
or more
100 mm
Insert Align the
Center of
scale with
the
ø 75 mm hole
the line. *
scale. *
* Same for left hole.
Electrical cover
VA clamp
Fixing screws
Earth wire
(green/yellow)
Indoor/outdoor
unit
connecting wire
(A)
2-4. PIPE FORMING AND DRAIN PIPING
- Pipe Forming
• Place the drain hose below the refrigerant piping.
• Do not pull the hose when applying the tape.
• When the drain hose passes the room, be sure to wrap
- insulation material (obtainable at a store) around it.
Rear, right, or downward piping
1) Put the refrigerant piping and the drain hose
the end.
2) Insert the piping and the drain hose into the wall
indoor unit on the installation plate (1).
the unit to left and right.
5-7 mm 4) Thrust the lower part of the indoor unit into the installation plate (1).
Drain Piping
Outdoor
side • If the extension drain hose has to pass through a room, be sure to wrap it with commer-
cially sold insulation.
• If the drain hose provided with the indoor unit is too short, connect it with drain hose (I)
that should be provided at your site. (Fig. 2)
• When connecting the drain hose to the hard vinyl chloride pipe, be sure to insert it securely
into the pipe. (Fig. 3)
Wall
Downward
slope
Fig. 1
Do not raise
Water
-
Left or left-rear piping
Note:
Be sure to reattach the drain hose and
the drain cap in case of left or left-rear
piping.
Otherwise, it could cause drops of water
to drip down from the drain hose.
1) Put the refrigerant piping and the drain hose together, then
Felt tape (4) overlap width should be 1/3 the tape width.
Use a bandage stopper at the end of felt tape (4).
2) Pull out the drain cap at the rear right of the indoor unit.
(Fig. 1)
• Hold the convex section at the end and pull the drain cap.
3) Pull out the drain hose at the rear left of the indoor unit.
(Fig. 2)
drain hose forward.
4) Put the drain cap into the section to which the drain
hose is to be attached at the rear of the indoor unit.
(Fig. 3)
• Insert not sharp-edged tools such as screwdrivers into
the hole at the end of the cap and insert the cap fully
into the drain pan.
5) Insert the drain hose fully into the drain pan at the rear right
of the indoor unit. (Fig. 4)
of its inserting part at the drain pan.
the upper part of indoor unit on installation plate (1). Then,
7) Cut out 2 pieces of cardboard from the shipping box (use
indoor unit. (Fig. 5)
8) Connect the refrigerant piping with the extension pipe (B).
9) Thrust the lower part of the indoor unit into the installation
plate (1).
Cut off in case of
right piping.
Drain
hose
70 cm
or more
Soft hose
I.D. 15 mm
Different
diameter joint
Fig. 2
Accumulated
drain water
Air
Water
Water
Waving
Piping tape (G)
Felt tape (4)
Gas pipe
Indoor/outdoor
Felt tape (4)
unit connecting
Piping tape (G)
wire (A)
Cut off in case of
downward piping.
Drain hose
Hard vinyl chloride
pipe I.D. 30 mm
Insert
securely
Fig. 3
Tip of drain
At least
hose dipped 50 mm
in water gap
Ditch
Cut off in case of
left piping.
Drain cap
Drain cap
Fig. 1
Drain hose
Fig. 2
Drain cap
Fig. 3
Drain hose
Fig. 4
Fig. 5