9
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.)
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.
(1)When a space of 300 mm [11-13/16 in] or more is available below the unit
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.)
(2)When a space of less than 300 mm [11-13/16 in] is available below the unit
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)
3.3. Indoor unit accessories
The unit is provided with the following accessories:
4. Fixing hanging bolts
4.1. Fixing hanging bolts
[Fig. 4-1-1] (P.3)
(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.
Center of gravity and Product Weight
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)
[Fig. 5-1-2] (P.3)
5.2. Confirming the units position and fixing hanging
bolts
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.
Use a level to check that the surface indicated by
A
is at level. 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.
[Fig. 5-2-1] (P.3)
Caution:
Be sure to install the unit body at level.
A
Electric box
B
Ceiling
C
Ceiling beam
D
Access door 2 (450 mm
×
450 mm [17-3/4 in
×
17-3/4 in])
E
Access door 1 (450 mm
×
450 mm [17-3/4 in
×
17-3/4 in])
F
Maintenance access space
G
Supply air
H
Intake air
I
Bottom of indoor unit
J
Access door 3
K
Access door 4
No.
Name
Quantity
1
Pipe cover (for refrigerant piping joint) Small diameter
1
2
Pipe cover (for refrigerant piping joint) Large diameter
1
3
Bands for temporary tightening of pipe cover and drain hose
8
4
Washer (square)
8
5
Drain hose
2
6
Washer (round)
2
7
Installation manual
1
8
Operation manual
1
A
Center of gravity
Model name
W mm [in]
L mm [in]
X mm [in]
Y mm [in]
Z mm [in]
Product Weight kg [lb]
PEAD-A24AA5
643 [25-5/16]
1154 [45-7/16] 325 [12-13/16] 525 [20-11/16]
130 [5-1/8]
33 [73]
PEAD-A30AA5
643 [25-5/16]
1154 [45-7/16] 325 [12-13/16] 525 [20-11/16]
130 [5-1/8]
33 [73]
PEAD-A36AA5
643 [25-5/16]
1454 [57-1/4]
330 [13]
675 [26-9/16]
130 [5-1/8]
41 [91]
PEAD-A42AA5
643 [25-5/16]
1454 [57-1/4]
330 [13]
675 [26-9/16]
130 [5-1/8]
43 [95]
A
Unit body
B
Lifting machine
C
Nuts (field supply)
D
Washers (accessory)
E
M10 hanging bolt (field supply)
A
Indoor units bottom surface
KD79P399H01.book Page 9 Tuesday, July 1, 2014 4:51 PM
