Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 149

4.5.1 Installation of indoor unit
(1) Wall mounted type (SKM)
(a) Caution for installation
1) The system should be applied to places as households, residences and the like.
2) The equipment shall be installed in accordance with national wiring regulations.
3) The connection to the fixed wiring of the mains supply must be made via a double pole isolating switch with a contact
gap of at least 3mm in each pole.
4) When the outdoor unit has a possibility of being overturned or being displaced and fall from its original installation
position, the outdoor unit should be fixed in its position by the use of anchor bolts or wires.
(b) Installation of indoor unit
1) Fixing of installation Board
¡Find the inside wall structures (pillar, etc.) and se-
cure the board after checking the horizontal level.
Level surface
matching mark
Installation Space (Indoor Unit)
Models SKM222, 252 type
Indoor unit
50 Service space
75 615
150
450
92
Position for the
hole in the wall
2) Drilling of holes in the wall and fixture of sleeve
¡ The connecting wires may touch the metal inside the
wall and cause danger so it is necessary to always
use the sleeve.
Indoor side
ø65
¡ Drill a hole with a 65 whole
core drill.
450
Installation 100
Service
board
space
60
150
40
Gas pipe 370
Liquid pipe 420
Position for the
ø65
hole in the wall ø65
Model SKM502 type
Sleeve
Outdoor side
5°
¡ When the pipe is connected at the rear, cut off the lower and the right
side portions of the sleeve collar (as shown by the broken line.)
¡ Horizontal level adjustment of the board is conducted
with four temporarily tightened screws.
Reference hole
¡ Adjust so that the board will be horizontal with the
reference hole in the center.
Models SKM282, 322,402 type
Indoor unit
50 Service
space
15 760
170 450
67
Drain hose 600
(Connection hole outside diameter ø16)
Position for the hole in the wall ø65
Position for the hole in the wall ø65
50 Service
space
15
170
50 50
67
(Connection hole outside diameter ø16)
Position for the hole in the wall ø65
Sleeve
Wall thickness × 1.5cm
Putty
SCM-HG
[Front View]
Installation board
Service 100
space
15
170
51
Gas pipe 390
Liquid pipe 440
Indoor unit
Installation board
Service 100
space
760 15
450 170
50 50
51
Gas pipe 390
Liquid pipe 440
Drain hose 600
Position for the hole in the wall ø65
Inclined plate
Sealing plate
Assembled state
(4 room)
Unit: mm
Pipe
147