Indoor Unit Installation - Mitsubishi Electric MSZ-AP15VG Installation Manual

2. INDOOR UNIT INSTALLATION

2-1. FIXING OF INSTALLATION LATE
Find a structural material (such as a stud) in the wall and x installation plate
(1) hori ontally by tightening the xing screws (2) rmly.
To prevent installation plate (1) from vibrating, be sure to install the xing screws
in the holes indicated in the illustration. For added support, xing 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.
hen bolts recessed in the concrete wall are to be utili ed, 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).
Ceiling
Installation plate (1)
Level
81 mm
or more
Fixing screw (2)
2-3. CONNECTING WIRES FOR INDOOR UNIT
You can connect indoor/outdoor lead wire without removing the front panel.
1) Open the front panel.
2) Remove VA clamp.
3) ass indoor/outdoor unit connecting wire (A) from the back of the indoor unit
and process the end of the wire.
4) Loosen terminal screw, and connect rst 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.
5) Firmly tighten the terminal screws to prevent them from loosening. After
tightening, pull the wires lightly to con rm 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.
Terminal block
35 mm
Lead wire
Indoor terminal block
Earth wire (green/yellow)
Indoor/outdoor unit
connecting wire (A)
Outdoor terminal block
• For future servicing, give extra length to the connecting wires.
• Make earth wire a little longer than others. (More than 60 mm)
• Do not fold the excess wire, or cram it into small space. Take caution not
to damage the wires.
• Be sure to attach each screw to its correspondent terminal when securing
the cord and/or the wire to the terminal block.
Note Do not place the wires between the indoor unit and the installation
plate (1). Damaged wire could cause heat generation or re.
Wall
ø65 mm
5-7 mm
Outdoor side
66 mm or more/
142 mm or more for left/left
rear piping (using spacer)
108 mm
or more
100 mm
Insert Align the
Center of
the scale with ø65 mm hole
scale. * the line. *
* Same for left hole.
VA clamp
Fixing screw
Indoor/outdoor unit
connecting wire (A)
2-4. I E FORMING AND DRAIN I ING
Pipe Forming
lace the drain hose below the refrigerant piping.
• Make sure that the drain hose is not heaved or
snaked.
• Do not pull the hose when applying the tape.
hen the drain hose passes the room, be sure
to wrap insulation material (obtainable at a store)
around it.
Drain Piping
If the extension drain hose has to pass through a room, be sure to wrap it with
commercially sold insulation.
The drain hose should point downward for easy drain ow. (Fig. 1)
• 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)
hen connecting the drain hose to the hard vinyl chloride pipe, be sure to
insert it securely into the pipe. (Fig. 3)
Down-
Drain hose
ward
slope
Fig. 1 Fig. 2
Do not make drain piping as shown below.
Do not Accumulated
raise drain water
Air
Water Water
leakage leakage Waving
Rear, right, or downward piping
1) Put the refrigerant piping and the drain
hose together, then rmly apply piping
tape (G) from the end.
2) Insert the piping and the drain hose
into the wall hole sleeve (C), and hook
the upper part of the indoor unit on the
installation plate (1).
3) Check if the indoor unit is hooked securely on the installation plate (1) by
moving the unit to left and right.
4) Thrust the lower part of the indoor unit into the installation plate (1).
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) ut the refrigerant piping and the drain hose together, then rmly apply felt
tape (4) from the end.
Felt tape (4) overlap
width should be 1/3
the tape width. Use
Felt tape (4)
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)
Hold the claw marked by the arrows and
pull out the 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 screw-
drivers 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)
• Check if the hose is hooked securely to the
projection of its inserting part at the drain
pan.
6) Insert the drain hose into wall hole sleeve (C),
and hook the upper part of indoor unit on instal-
lation plate (1). Then, move the indoor unit
completely to the left in order to make placing
the piping in the back space of the unit easier.
7) Cut out a piece of cardboard from the shipping
box, roll it up, hook it onto the back rib, and use
it as a spacer to lift the 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).
Felt tape (4)
Piping tape (G)
Liquid pipe
Gas pipe
Indoor/outdoor unit
connecting wire (A)
Drain hose
70 cm
or more
Fig. 3
At least 50 mm
gap
Water
Ditch
leakage
Cut off in case of
right piping.
Cut off in case of
downward piping.
Cut off in case of left
Piping tape (G)
piping.
Drain cap
Drain cap
Fig. 1
Drain hose
Fig. 2
Drain cap
Fig. 3
Drain hose
Fig. 4
Fig. 5
EN-4