Mitsubishi Electric PKFY-P25VBM-E [3/14] Installing the indoor unit

3. Installing the indoor unit

(mm)

Fig. 3-1

Fig. 3-2

3.1.2. Drilling the piping hole (Fig. 3-2)

Use a core drill to make a hole of 90-100 mm diameter in the wall in the

piping direction, at the position shown in the diagram to the left.

The hole should incline so that the outside opening is lower than the in-

side opening.

Insert a sleeve (with a 90 mm diameter and purchased locally) through the

hole.

Note:

The purpose of the hole’s inclination is to promote drain flow.

Sleeve

Hole

(Indoors)

Wall

(Outdoors)

3.1.3. Installing the wall mounting fixture

Since the indoor unit weighs near 10 kg, selection of the mounting loca-

tion requires thorough consideration. If the wall does not seem to be

strong enough, reinforce it with boards or beams before installation.

The mounting fixture must be secured at both ends and at the centre, if

possible. Never fix it at a single spot or in any unsymetrical way.

(If possible, secure the fixture at all the positions marked with a bold ar-

row.) (Fig. 3-3)

Warning:

If possible, secure the fixture at all positions indicated with a bold arrow.

Caution:

• The unit body must be mounted horizontally.

• Fasten at the holes marked with

as shown by the arrows.

Fasten a thread to the hole.

The level can be easily obtained by hanging a weight from the string and aligning the

string with the mark.

3.2. Preparation for piping connection

Remove the vinyl band that holds the drain pipe.

Rear, right and lower piping (Fig. 3-4)

Bind the refrigerant pipes and drain pipe with vinyl tape at three or more

points. This will facilitate passing the pipes through the wall.

Vinyl tape

This figure is viewed from the back of the unit.

Left and left rear piping

- For left rear piping, pull the pipes out the hole to determine their correct

length, then bend them. The indoor unit should hang on the wall mounting

fixture. (Fig. 3-5)

Wall

Wall hole

Bent section

Refrigerant pipe

Drain pipe

Transmission cable

Fig. 3-3

Fig. 3-4

Fig. 3-5

Min. 100 mm

Min. 130 mm

Min. 59 mm

Mount board

*1: 69mm or more for left and

left back piping

40.5

245.5

196.5

283 9

260

190

450

109.5

450

79.5

79.5 328

298

109.5

105

100

450

3.1. Installing the wall mounting fixture (Fig. 3-1)

3.1.1. Setting the wall mounting fixture and piping positions

Using the wall mounting fixture, determine the unit’s installation position

and the locations of the piping holes to be drilled.

Warning:

Before drilling a hole in the wall, you must consult the building contractor.

Supporting piece Knockout hole (12-ø2.6)

Mount board Knockout hole (4-ø9)

Main body Knockout hole (87-ø5.4)

Slot (4-4.5 × 35) Piping hole (ø65)

Knockout hole (8-ø4.3) Slot (4-4.5 × 40)

Level setting standard Slot (4-4.5 × 37)

Knockout hole Slot (4-11 × 20)

W: Location for wall holes

Wall mounting fixture

Hole centre

Align the scale with the line.

Insert scale.

Mitsubishi Electric PKFY-P25VBM-E [3/14] Installing the indoor unit

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