Selecting The Installation Location; Selecting An Installation Site & Accessories; Fixing Hanging Bolts - Mitsubishi Electric PEAD-A09AA8 Installation Manual

2. Selecting the installation location

2.1. Indoor unit
• Where airflow is not blocked.
• Where cool air spreads over the entire room.
• Where it is not exposed to direct sunshine.
• At a distance 1 m [3-1/4 ft] or more away from your TV and radio (to prevent picture
from being distorted or noise from being generated).
2.2. Outdoor unit
Refer to the outdoor unit installation manual.
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-A09AA8
PEAD-A12AA8
PEAD-A15AA8
PEAD-A18AA8
PEAD-A24AA8
PEAD-A30AA8
PEAD-A36AA8
12
• In a place as far away as possible from fluorescent and incandescent lights (so the
infrared remote control can operate the air conditioner normally).
• Where the air filter can be removed and replaced easily.
Mount the indoor unit into a ceiling strong enough to withstand the weight of
the unit.
(1)When a space of 300 mm [11-13/16 in] or more is available below the unit between
(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:
• 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
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]
Warning:
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
No. Name
1
Pipe cover (for refrigerant piping joint) Small diameter
2
Pipe cover (for refrigerant piping joint) Large diameter
3
Bands for temporary tightening of pipe cover and drain hose
4
Washer (square)
5
Drain hose
6
Washer (round)
7
Installation manual
8
Operation manual
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]
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]
27 [60]
27 [60]
30 [67]
30 [67]
38 [84]