Mitsubishi Electric CITY MULTI PEFY-P125VMHS-E-F Manuel D'installation page 9

3. Selecting an installation site
• Select a site with sturdy fixed surface sufficiently durable against the weight of
unit.
• Before installing unit, the routing to carry in unit to the installation site should be
determined.
• Select a site where the unit is not affected by entering air.
• Select a site where the flow of supply and return air is not blocked.
• Select a site where refrigerant piping can easily be led to the outside.
• Select a site which allows the supply air to be distributed fully in room.
• Do not install unit at a site with oil splashing or steam in much quantity.
• Do not install unit at a site where combustible gas may generate, flow in, stag-
nate or leak.
• Do not install unit at a site where equipment generating high frequency waves
(a high frequency wave welder for example) is provided.
• Do not install unit at a site where fire detector is located at the supply air side.
(Fire detector may operate erroneously due to the heated air supplied during
heating operation.)
• When special chemical product may scatter around such as site chemical plants
and hospitals, full investigation is required before installing unit. (The plastic
components may be damaged depending on the chemical product applied.)
• If the unit is run for long hours when the air above the ceiling is at high tempera-
ture/ high humidity (due point above 26 °C), due condensation may be produced
in the indoor unit. When operating the units in this condition, add insulation mate-
rial (10-20 mm) to the entire surface of the indoor unit to avoid due condensation.
4. Fixing hanging bolts
4.1. Fixing hanging bolts
(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.
• If necessary, reinforce the hanging bolts with anti-quake supporting members as
countermeasures against earthquakes.
* Use M10 for hanging bolts and anti-quake supporting members (field supply).
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.
5. Installing the unit
5.1. Hanging the unit body
Bring the indoor unit to an installation site as it is packed.
To hang the indoor unit, use a lifting machine to lift and pass through the
hanging bolts.
[Fig. 5.1.1] (P.3)
A Unit body
B Lifting machine
[Fig. 5.1.2] (P.3)
C Nuts (field supply)
D Washer (without cushion)
E Washer (with cushion)
F M10 hanging bolt (field supply)
Warning:
The unit must be securely installed on a structure that can sustain its weight.
If the unit is mounted on an unstable structure, it may fall down causing inju-
ries.
3.1. Securing installation and service 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)
A Electrical components case
B Duct dimension
Note:
Always install access doors in the specified positions for service mainteance.
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)
A Electrical components case
C Air inlet
E Access door
G Air outlet
I Ceiling
K More than 20 mm
3.2. Combining indoor units with outdoor units
For combining indoor units with outdoor units, refer to the outdoor unit installation
manual.
3 Reinforce the ceiling members, and add other members for fixing the ceiling
boards.
[Fig. 4.1.1] (P.3)
A Center of gravity
Center of gravity and Product Weight
W L
Model name
(mm) (mm)
PEFY-P125VMHS-E-F 814 1204
PEFY-P200VMHS-E-F 1034 1326
PEFY-P250VMHS-E-F 1034 1326
5.2. Confirming the unit's position and fixing hanging
bolts
Ensure that the hanging bolt nuts are tightened to fix the hanging bolts.
To ensure that drain is discharged, be sure to hang the unit at level using
a level.
Caution:
Install the unit in horizontal position. If the side with drain port is installed
higher, water leakage may be caused.
B Duct dimension
D Top of unit
F Servicing space
H Hanging bolt spacing
J More than 100 mm
H X Y Z Product
(mm) (mm) (mm) (mm) Weight (kg)
210 364 649 190 49
255 462 660 235 78
255 462 660 235 81
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