Selecting An Installation Site; Installation And Servicing Space; Combining Indoor Units With Outdoor Units; Fixing Hanging Bolts - Mitsubishi Electric CITY MULTI PEFY-P-VMH-A Série Mode D'emploi

3. Selecting an installation site

• Select a location so that air can be blown into all corners of the room.
• Avoid locations exposed to outside air.
• Select a location free of obstructions to the airflow in and out of the unit.
• Avoid locations exposed to stream or oil vapour.
• Avoid locations where combustible gas may leak, settle or be generated.
• Avoid installation near machines emitting high-frequency waves (high-frequency
welders, etc.)
• Avoid locations where the airflow is directed at a fire alarm sensor. (Hot air
could trigger the alarm during the heating operation.)
• Avoid places where acidic solutions are frequently handled.
• Avoid places where sulphur-based or other sprays are frequently used.
Warning:
Install the indoor unit on a ceiling strong enough to sustain its weight.
If the ceiling lacks strength, it may cause the unit to fall down, resulting in an
injury.

3.1. Installation and servicing space

Refrigerant piping, drain piping, wiring, and other components should be installed
outside the areas, and free of the access doors to ensure that they do not
hinder fan maintenance.
[Fig. 3.1.1] (P. 2)
Type 40 - 140
Type 200 · 250
A Fan and motor removal door
B Duct dimension

4. Fixing hanging bolts

4.1. Fixing hanging bolts
(Use M10 hanging bolts. The bolts should be supplied in the field.)
(Give site of suspension strong structure.)
Hanging structure
• Ceiling: The ceiling structure varies from building to one another. For detailed
information, consult your construction company.
1 Reinforcing the ceiling with additional members (edge beam, etc.) must be
required to keep the ceiling at level and to prevent the ceiling from vibrations.
2 Cut and remove the ceiling members.
3 Reinforce the ceiling members, and add other members for fixing the ceiling
boards.
For wooden construction
• Use the tie beam (for one story building) or second-floor beam (for two story
building) as strength members.
• To hang the air-conditioner, use a hard square timber of more than 6 cm if the
distance between beams is less than 90 cm and a hard square timber of more
than 9 cm if the distance between beams is less than 180 cm.

5. Installing the unit

5.1. Hanging the unit body

s s s s s Bring the indoor unit to an installation site as it is packed.
s s s s s To hang the indoor unit, use a lifting machine to lift and pass through the
hanging bolts.
[Fig. 5.1.1] (P. 2)
A Unit body
B Lifting machine
[Fig. 5.1.2] (P. 2)
C Nuts (field supply)
D Washers
E M10 Hanging bolt (field supply)
Note:
Always install access doors in the specified positions for service mainte-
nance.
Type
PEFY-P40·50·63VMH-A
PEFY-P71·80VMH-A
PEFY-P100·125·140VMH-A
PEFY-P200·250VMH-A
Warning:
Install the unit on a ceiling strong enough to support its weight.
• If the unit is mounted on a structure of insufficient strength it may fall
causing injury.
[Fig. 3.1.2] (P. 2)
Type 40 - 140
Type 200 · 250
B Duct dimension
D Air inlet
F Access door
H Air outlet
J Ceiling
L 20 min.
3.2. Combining indoor units with outdoor
units
For combining indoor units with outdoor units, refer to the outdoor unit installation
manual.
[Fig. 4.1.1] (P. 2)
A Ceiling board
C Tie beam
D Square timber for hanging the air conditioner
E Pitch
For reinforced concrete construction
• As shown in the figure below, fix the hanging bolts, or use square timbers to fix
the hanging bolts.
[Fig. 4.1.2] (P. 2)
F Insert: 100 to 150 kg (1 piece) (field supply)
G M10 hanging bolt (field supply)
H Reinforcement
Product Weight (kg)
Model name 40 50 · 63
PEFY-P-VMH 44 45
5.2. Confirming the unit's position and
fixing hanging bolts
s s s s s Use the gage supplied with the panel to confirm that the unit body and
hanging bolts are positioned in place. If they are not positioned in place,
it may result in dew drops due to wind leak. Be sure to check the positional
relationship.
s s s s s Use a level to check that the surface indicated by A A A A A is at level. Ensure
that the hanging bolt nuts are tightened to fix the hanging bolts.
s s s s s To ensure that drain is discharged, be sure to hang the unit at level using
a level.
[Fig. 5.2.1] (P. 2)
A Bottom of indoor unit
Caution:
Be sure to install the unit body at level.
A B C
680 754 550 600
930 1004 800 850
1130 1204 1000 1050
1250 1326 1100 1100
C Electrical components case
E Top of unit
G Servicing space
I Hanging bolt spacing
K 100 min.
B Edge beam
71 · 80 100 · 125 · 140 200 · 250
50 70
D
100
7