Securing Installation And Service Space; Combining Indoor Units With Outdoor Units; Fixing Hanging Bolts; Ceiling Hole And Hanging Bolt Positions - Mitsubishi Electric CITY MULTI PDFY-P20-VM-E Manuel D'installation

3.1. Securing installation and service space

• Piping, wiring and maintenance must be carried out from the bottom and the
sides, so be sure to provide the space specified below. Furthermore, please
give consideration to workability and safety during installation hoisting, and not
only assure as much space as possible, but also refer to the accompanying
instruction manuals for each panel concerning details on panel installation.
• When attaching a high performance filter, it is necessary to add +32 to dimen-
sions B (*2) and E (*1) of the bottom intake specifications.
[Fig. 3.1.1] (P.2)
<In case of installation of the bottom intake panel>
<
In case of use of the optional canvas duct for bottom intake>
Model name
20 · 25 · 32
A 790
B more than 455
C more than 500
D 1000
E more than 365
F more than 100
G more than 20
H more than 100
I more than 1000

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.
3 Reinforce the ceiling members, and add other members for fixing the ceiling
boards.
[Fig. 4.1.1] (P.2)
A Center of gravity
Center of gravity and Product Weight
Model name
W L
PDFY-P20VM-E 670 686
PDFY-P25VM-E 670 686
PDFY-P32VM-E 670 686
PDFY-P40VM-E 670 936
PDFY-P50VM-E 670 936
PDFY-P63VM-E 670 1136
PDFY-P71VM-E 670 1136
PDFY-P80VM-E 670 1136
PDFY-P100VM-E 710 1486
PDFY-P125VM-E 710 1486

5. Installing the unit

5.1. Hanging the unit body

s Bring the indoor unit to an installation site as it is packed.
s To hang the indoor unit, use a lifting machine to lift and pass through the
hanging bolts.
s Install the indoor unit before ceiling joist construction.
[Fig. 5.1.1] (P.3)
A Unit body
5.2. Confirming the unit's position and fix-
ing hanging bolts
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.
40 · 50
1040
more than 455
more than 500
1440
more than 365
more than 100
more than 20
more than 100
more than 1000
Prodact
H X Y Z
Weight (kg)
148 285 343 128 25.5
148 285 343 128 25.5
148 285 343 128 27
148 285 468 128 32
148 285 468 128 34
148 285 568 128 39
148 285 568 128 39
148 285 568 128 39
168 305 743 148 52
168 305 743 148 52
B Lifting machine
Model name
63 · 71 · 80
A 1240
B more than 455
C more than 500
D 1440
E more than 365
F more than 100
G more than 20
H more than 100
I more than 1000
[Fig. 3.1.2] (P.2)
<In case of rear intake>
<In case of use of the optional filter box for rear intake>
Warning:
Be sure to install the unit in a location which can adequately support its
weight.
- If there is insufficient strength to support the unit's weight, it could fall and cause
injuries.
3.2. Combining indoor units with outdoor
units
For combining indoor units with outdoor units, refer to the outdoor unit installation
manual.

4.2. Ceiling hole and hanging bolt positions

Ceiling Opening Hole and Sling Bolt Pitch
• If a panel is used, use the gauge supplied with the panel so that the positions
of both the ceiling opening hole and the unit matche the dimensions in the
diagram below. Please refer to the instruction manual supplied with the panel
concerning how to use the gauge.
• Use M10 sling bolts (continuous thread).
[Fig. 4.2.1] (P.2)
<In case of bottom intake, this drawing shows from above the indoor unit>
<In case of rear intake>
Model name
A
20 · 25 · 32 750
40 · 50 1000
63 - 80 1200 1136
100 · 125 1550 1486
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 To ensure that drain is discharged, be sure to hang the unit at level using
a level.
Caution:
Be sure to install the unit body at level.

5.3. Changing to rear intake specifications

Changing the control box installation position
1. Remove one of the screws used to fasten the control box (Fig. 5.3.1).
2. Remove the control box cover (Fig. 5.3.1), then remove the intake sensor (Fig.
5.3.2) mounted in the box, and the piping sensor connectors (CN21, CN29),
LEV connector (CN60) and fan connector (FAN1) mounted on the control board.
100 · 125
1590
more than 495
more than 500
1765
more than 405
more than 100
more than 20
more than 100
more than 1000
B C D E
686 670 32 986
936 670 32 1426
670 32 1426
710 32 1751
(mm)
F
263
453
253
228
7