Selecting An Installation Site & Accessories; Indoor Unit Accessories; Fixing Hanging Bolts; Installing The Unit - Mitsubishi Electric Mr.SLIM PEAD-A09AA7 Manuel D'installation

3. Selecting an installation site & Accessories
• 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, stagnate
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.)
• Avoid places where acidic solutions are frequently handled.
• Avoid places where sulphur-based or other sprays are frequently used.
• 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 temperature/
high humidity (due point above 26 °C [79 °F]), due condensation may be produced
in the indoor unit. When operating the units in this condition, add insulation material
(10-20 mm [13/32 to 13/16 in]) to the entire surface of the indoor unit to avoid due
condensation.
3.1. Install the indoor unit on a ceiling strong enough
to sustain its weight
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 injuries.
3.2. Securing installation and service space
Secure enough access space to allow for the maintenance, inspection, and
replacement of the motor, fan, drain pump, heat exchanger, and electric box in one
of the following ways.
Select an installation site for the indoor unit so that its maintenance access space will
not be obstructed by beams or other objects.

4. Fixing hanging bolts

4.1. Fixing hanging bolts
[Fig. 4-1-1] (P.3)
A Center of gravity
(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.
Center of gravity and Product Weight
Model name
PEAD-A09AA7
PEAD-A12AA7
PEAD-A15AA7
PEAD-A18AA7
PEAD-A24AA7
PEAD-A30AA7
PEAD-A36AA7
PEAD-A42AA7

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 Washers (accessory)
E M10 hanging bolt (field supply)
10
(1)When a space of 300 mm [11-13/16 in] or more is available below the unit
(2)When a space of less than 300 mm [11-13/16 in] is available below the unit

3.3. Indoor unit accessories

The unit is provided with the following accessories:
No.
• 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
2 Cut and remove the ceiling members.
3 Reinforce the ceiling members, and add other members for fixing the ceiling
W mm [in] L mm [in] X mm [in]
643 [25-5/16] 954 [37-9/16] 340 [13-3/8]
643 [25-5/16] 954 [37-9/16] 340 [13-3/8]
643 [25-5/16] 954 [37-9/16] 340 [13-3/8]
643 [25-5/16] 954 [37-9/16] 340 [13-3/8]
643 [25-5/16] 1154 [45-7/16] 325 [12-13/16] 525 [20-11/16]
643 [25-5/16] 1154 [45-7/16] 325 [12-13/16] 525 [20-11/16]
643 [25-5/16] 1454 [57-1/4] 330 [13]
643 [25-5/16] 1454 [57-1/4] 330 [13]
5.2. Confirming the unit's position and fixing hanging
 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
Install the unit in horizontal position. If the side with drain port is installed
higher, water leakage may be caused.
between the unit and the ceiling (Fig. 3-2-1)
• Create access door 1 and 2 (450 × 450 mm [17-3/4 × 17-3/4 in] each) as shown
in Fig. 3-2-2. (Access door 2 is not required if enough space is available below
the unit for a maintenance worker to work in.)
between the unit and the ceiling (At least 20 mm [13/16 in] of space should be left
below the unit as shown in Fig. 3-2-3.)
• Create access door 1 diagonally below the electric box and access door 3 below
the unit as shown in Fig. 3-2-4.
or
• Create access door 4 below the electric box and the unit as shown in Fig. 3-2-5.
[Fig. 3-2-1] (P.2)
[Fig. 3-2-2] (Viewed from the direction of the arrow A) (P.2)
[Fig. 3-2-3] (P.2)
[Fig. 3-2-4] (Viewed from the direction of the arrow B) (P.2)
[Fig. 3-2-5] (Viewed from the direction of the arrow B) (P.2)
A Electric box
C Ceiling beam
×
D Access door 2 (450 mm 450 mm [17-3/4 in
×
E Access door 1 (450 mm 450 mm [17-3/4 in
F Maintenance access space
H Intake air
J Access door 3
Name
1 Pipe cover (for refrigerant piping joint) Small diameter
2 Pipe cover (for refrigerant piping joint) Large diameter
Bands for temporary tightening of pipe cover and drain hose
3
4 Washer (square)
5 Drain hose
6 Washer (round)
7 Installation manual
8 Operation manual
required to keep the ceiling at level and to prevent the ceiling from vibrations.
boards.
Y mm [in] Z mm [in]
375 [14-3/4] 130 [5-1/8]
375 [14-3/4] 130 [5-1/8]
375 [14-3/4] 130 [5-1/8]
375 [14-3/4] 130 [5-1/8]
130 [5-1/8]
130 [5-1/8]
675 [26-9/16] 130 [5-1/8]
675 [26-9/16] 130 [5-1/8]
bolts
level.
Caution:
B Ceiling
×
17-3/4 in])
×
17-3/4 in])
G Supply air
I Bottom of indoor unit
K Access door 4
Quantity
1
1
8
8
2
2
1
1
Product Weight kg [lb]
26 [58]
26 [58]
28 [62]
28 [62]
31 [69]
31 [69]
39 [86]
41 [91]