Indoor Unit Installation - Mitsubishi Electric MSZ-SF15VA Manual De Instalación

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 by tightening the fixing screws (2) firmly.
• 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 installa-
tion 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 ø 65 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
Wall
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) Pass 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 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.
5) 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.
Terminal block
15 mm
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 fire.
En-
Wall
ø 65 mm
5-7 mm
Outdoor side
54 mm or more
130 mm or more for left and left
back piping (using spacer)
108 mm
or more
100 mm
Wall
Insert Align the
Center of
the scale with
ø 65 mm hole
scale. * the line. *
* Same for left hole.
VA clamp
Fixing screw
Indoor/outdoor unit
connecting wire (A)
2-4. PIPE FORMING AND DRAIN PIPING
Pipe Forming
• Place the drain hose below the refrigerant pip-
ing.
• Make sure that the drain hose is not heaved or
snaked.
• 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.
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 flow. (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)
• When 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
Soft hose
I.D. 15 mm
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 firmly 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) Put the refrigerant piping and the drain hose together, then firmly apply felt
tape (7) from the
end.
Felt tape (7) overlap
width should be 1/3
Felt tape (7)
the tape width. Use
a bandage stopper
a t t h e e n d o f f e l t
tape (7).
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 in-
stallation 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 exten-
sion pipe (B).
9) Thrust the lower part of the indoor unit into the
installation plate (1).
Liquid pipe
Gas pipe
Indoor/outdoor unit
connecting wire (A)
Felt tape (7)
Piping tape (G)
Drain hose
Hard vinyl chloride
70 cm
pipe I.D. 30 mm
or more
Insert
securely
Different
diameter joint
Fig. 3
Tip of drain
hose dipped At least 50 mm
gap
in water
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