Mitsubishi Electric Mr.SLIM PLA-M50EA Manuel D'installation page 6

3. Installing the indoor unit
F
D
60 271
E
C
A
en
B
A
E
A
90 100 100 90
70°
F
I
A
C
B
1
F G
D E
D Ceiling
E Rafter
F Beam
G Roof beam
4
A
357
B
Models
M35, 50
M60
M71-140
Fig. 3-3
C
P
A
O
D
A
J
350 G
H
Fig. 3-4
A Main unit
B Grille
C Pillar
2
H
I
H Use inserts rated at 100 - 150 kg
each (procure locally)
I Suspension bolts M10 (3/8")
(procure locally)
J Steel reinforcing rod
Fig. 3-5
3.3. Refrigerant and drainage piping locations of indoor
unit (Fig. 3-3)
The figure marked with * in the drawing represent the dimensions of the main unit
excluding those of the optional casement.
A Drain pipe
B Ceiling
C Grille
D Refrigerant pipe (liquid)
E Refrigerant pipe (gas)
F Main unit
* When the optional casement is installed, add the value in the table for optional
(mm)
casement in the previous page.
D E
76 76.5
80.5 79.5
79.5 79.5
3.4. Branch duct hole and fresh air intake hole (Fig. 3-4)
(mm)
At the time of installation, use the duct holes (cut out) located at the positions shown
in Fig. 3-4, as and when required.
• A fresh air intake hole for the optional multi function casement can also be made.
F
Note:
• The figure marked with * in the drawing represent the dimensions of the main
unit excluding those of the optional multi function casement.
• When installing the optional multi function casement, add 135 mm to the
dimensions marked on the figure.
• When installing the branch ducts, be sure to insulate adequately. Otherwise
condensation and dripping may occur.
• When installing the fresh air intake hole, be sure to remove the insulator P
that is pasted on the indoor unit.
• When external air is input directly through the main unit, intake-air volume
should be 5% or less of indoor unit air volume.
• To input the external air, the duct fan and dust collecting filter to prevent
K
L
120°
drawing in dust and other particles are necessary.
For details, see "Fresh air intake volume & static pressure characteristics"
in the P series DATA BOOK.
• When external air is input into the main unit, the operation noise can be larger.
M
A Branch duct hole
B Main unit
N
C Fresh air intake hole
D Drain pipe
E Refrigerant pipe
F Branch duct hole diagram
(view from either side)
G 14-4×10 tapping screws
(mm)
H ø150 cut out hole
3.5. Suspension structure (Give site of suspension
strong structure) (Fig. 3-5)
• The ceiling work differs according to the construction of the building. Building con-
structors and interior decorators should be consulted for details.
(1) Extent of ceiling removal: The ceiling must be kept completely horizontal and the
J
ceiling foundation (framework: wooden slats and slat holders) must be reinforced
in order to protect the ceiling from vibration.
(2) Cut and remove the ceiling foundation.
(3) Reinforce the ends of the ceiling foundation where it has been cut and add ceiling
foundation for securing the ends of the ceiling board.
(4) When installing the indoor unit on a slanted ceiling, attach a pillar between the
ceiling and the grille and set so that the unit is installed horizontally.
1 Wooden structures
• Use tie beams (single storied houses) or second floor beams (2 story houses) as
reinforcing members.
• Wooden beams for suspending air conditioners must be sturdy and their sides must
be at least 6 cm long if the beams are separated by not more than 90 cm and their
sides must be at least 9 cm long if the beams are separated by as much as 180
cm. The size of the suspension bolts should be ø10 (3/8"). (The bolts do not come
with the unit.)
2 Ferro-concrete structures
Secure the suspension bolts using the method shown, or use steel or wooden hang-
ers, etc. to install the suspension bolts.
I ø175 burring hole pitch
J Fresh air intake hole diagram
K 3-4×10 tapping screws
L ø125 burring hole pitch
M ø100 cut out hole
N Ceiling
O Detailed figure of removing the insulator
P Insulation