Mitsubishi Electronics MSZ-FD09/12NA Indoor Unit Installation, Attaching The Installation Plate

2. INDOOR UNIT INSTALLATION

2-1. ATTACHING THE INSTALLATION PLATE

•Find a stud in the wall to attach installation plate (1) horizontally on the wall with screws (2).

•To prevent installation plate (1) from vibrating, be sure to install the attachment screws in the holes indicated in the illustration. For added support, additional screws may also be installed in other holes.

•When the indoor unit is to be attached to a concrete wall using recessed bolts, secure installation plate (1) using 7/16 in. x 13/16 in · 7/16 in. x 1 in. (11 mm × 20 mm · 11 mm × 26 mm) oval hole (17-3/4 in. [450 mm] pitch).

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2-2. DRILLING

1)Determine where the holes will be located on the wall.

2)Drill a ø 2-9/16 in. (65 mm) hole. The outdoor side should be 6/32 to 9/32 in. (5 to 7 mm) lower than the indoor side.

3)Insert wall hole sleeve (C).

2-3. CONNECTING WIRES FOR INDOOR UNIT

Note:

When the indoor unit is powered from the outdoor unit, depending on local code, a discon- nect switch needs to be installed to a power supply circuit.

1)Remove the panel assembly. (Refer to 5-1.)

2)Place the upper part of the indoor unit on the installation plate.

3)Remove corner box and conduit cover.

4)Attach conduit pipe (for rear piping) / elbow joint (for right, left, or downward piping) to conduit cover with lock nut. The thread of the installed conduit pipe / elbow joint appear- ing inside should be less than 3/8 in. (10 mm). (Fig. 1) Elbow joint should appear less than 1-3/16 in. (30 mm) outside. (Fig. 2)

5)Process the end of ground wire (Fig. 3). Connect it to the ground terminal of electrical parts box.

6)Process the end of indoor/outdoor unit connecting wire (A) (Fig. 3). Attach it to the terminal block. Be careful not to make mis-wiring. Attach the wire to the terminal block securely so that its core cannot be seen, and no external force affects the connecting section of the terminal block.

7)Firmly tighten the terminal screws. After tightening, verify that the wires are tightly fas- tened.

8)Secure indoor/outdoor unit connecting wire (A) and the ground wire with conduit cover. Never fail to hook the claw of the conduit cover to the electrical box. Attach the conduit cover securely. (Fig. 4)

9)According to the piping direction, remove the shaded part of the left side of box (Fig. 5) or corner box (Fig.6). Reinstall corner box and front panel.

Ceiling	5-5/8 in. (60 mm) or more
Bind the line to the center hole.	2-3/8 in. (142.5 mm) or more for left
	and left back piping (using spacer)
Installation plate (1)
Level
3-5/16 in.	3-5/16 in.
(84 mm)	(84 mm)
or more	or more
	4 in.
Wall	(100 mm)	Wall

Attachment screw (2)	Align the plumb	Insert	Align the	Center of
		the	scale with	ø 2-9/16 in.
	line with the	scale. *
			the line. *	(65 mm) hole
	mark .	Plumb

* Same for left hole.

	Wall
Ø 2-9/16 in.	6/32-9/32 in.
(65 mm)
	(5-7 mm)
	Outdoor side

		Lock nut
Fixing		Conduit
		cover	Indoor terminal
screw
			block
Conduit pipe	or	Elbow joint
(for rear piping)		(for right, left, or downward piping)

•Connect wires to the appropriate terminals

•For future servicing, leave some slack in the connecting wires.

Conduit cover

Remark:

*A disconnect switch is required.

Check the local code.

**Use a ring tongue termi- nal in order to connect a ground wire to terminal.

Power supply 208/230 V AC, 1phase 2wires. 60 Hz

INDOOR UNIT	Grouding
Terminal block
	terminal**

Disconnect switch*

208/230 V AC 1phase, 60 Hz

OUTDOOR UNIT

Terminal	block 1
Terminal block 2

Less than 3/8 in.	Less than 1-3/16 in.
(10 mm)	(30 mm)
Lock nut	Elbow joint
	(for right, left, or
Conduit pipe or
	downward piping)
elbow joint	Fig. 2
Fig. 1

19/32 in.

1 in. (15 mm)

(25 mm)

Ground Grouding terminal**

Lead
wire	Hook

• Make ground wire a little longer than
others. (More than 1-9/16 in. [40 mm])			Conduit cover
	Fig. 3		Fig. 4
			Corner box
			1 in.
			(25 mm)
	Box
Remove panel for	Remove panel for		Remove panel for
piping on left side of	piping on bottom left
		Remove panel for	piping on right side of
unit	side of unit
		piping on bottom side	unit
	Fig. 5	of unit	Fig. 6