Mitsubishi Electronics MSZ-D30/36NA 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.

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2-2. DRILLING

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

2)Drill a ø 3 in. (75 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)Open the front panel.

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

3)Remove electrical cover.

4)Remove VA clamp.

5)Remove corner box.

6)Remove cable guide.

7)Remove conduit plate.

8)Attach conduit pipe (for rear piping) / elbow joint (for right, left, or downward piping) to conduit plate 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)

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

10)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.

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

12)Reinstall conduit plate.

13)Reinstall cable guide.

14)According to the piping direction, remove the shaded part of the left side of box (Fig.4) or corner box (Fig. 5).

15)Reinstall VA clamp.

16)Reinstall electrical cover.

17)Reinstall panel assembly.

Remark:	INDOOR UNIT	Grounding
* A disconnect switch is required.
Check the local code.	Terminal block	terminal**
** Use a ring tongue terminal in
order to connect a ground wire
to terminal.		Disconnect
	208/230 V AC	switch*
	1phase, 60 Hz
OUTDOOR UNIT
Power supply	Terminal 1block
208/230 V AC,
1phase 2 wires,
60 Hz
Ground	Grounding terminal**

		Ceiling	2-13/16 in. (70 mm) or more
			5-1/8 in. (130 mm) or more for left
			and left back piping (using spacer)
	Installation plate (1)	Level
	4-11/16 in.		4 in.	8-11/16 in.
Wall			(100 mm)
	(120 mm)			(220 mm) Wall
	or more			or more
	Attachment screw (2)	Insert	Align the	Center of
		the
		scale. *	scale with	ø 3 in.
			the line. *	(75 mm)

hole

* Same for left hole.

	Wall
ø 3 in.	6/32-9/32 in.
(75 mm)
	(5-7 mm)
	Outdoor side

Electrical cover

Pull tab to remove cable guide.

VA Clamp

Electrical box

Indoor terminal block

	Grounding
	terminal
Cable guide
	Conduit pipe
Conduit plate	or
Lock nut
• Connect wires to the appropri-
ate terminals	Elbow joint

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

Conduit plate
	Less than 3/8 in.
	(10 mm)	Conduit plate
	Lock nut		Less than 1-3/16 in.
	Conduit pipe or
			(30 mm)
	elbow joint
			Elbow joint
	Fig. 1	(for right, left, or downward piping)
			Fig. 2
	5/8 in.
2-3/16 in.	(15 mm)
(55 mm)
Lead
wire
• Make ground wire a little longer than		Remove panel	Box
others. (More than 1-9/16 in. [40 mm])		for piping on	Remove panel for piping
	Fig. 3	left side of unit	on bottom left side of unit
			Fig. 4
	Corner box

Remove panel for	Remove panel
piping on bottom	for piping on right
side of unit	side of unit	Fig. 5