Securing Installation And Service Space; Connecting Indoor Units To Outdoor Units; Fixing Hanging Bolts; Installing The Unit - Mitsubishi Electric PEFY-WL06NMAU-A Installation Manual

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 x 450 mm [17-3/4 x 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.3)
[Fig. 3.2.2] (Viewed from the direction of the arrow A) (P.3)

4. Fixing hanging bolts

4.1. Fixing hanging bolts
[Fig. 4.1.1] (P.4)
A Center of gravity
(Give site of suspension strong structure.)
Center of gravity and Product Weight
Model name
PEFY-WL06NMAU-A
PEFY-WL08NMAU-A
PEFY-WL12NMAU-A
PEFY-WL15NMAU-A
PEFY-WL18NMAU-A
PEFY-WL24NMAU-A
PEFY-WL27NMAU-A
PEFY-WL30NMAU-A
PEFY-WL36NMAU-A
PEFY-WL48NMAU-A

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.4)
A Unit body
B Lifting machine
[Fig. 5.1.2] (P.4)
C Nuts (field supply)
D Washers (square) (accessory)
E M10 hanging bolt (field supply)
W (mm [in]) L (mm [in])
643 [25-5/16] 754 [29-11/16]
643 [25-5/16] 754 [29-11/16]
643 [25-5/16] 754 [29-11/16]
643 [25-5/16] 954 [37-9/16]
643 [25-5/16] 1154 [45-7/16]
643 [25-5/16] 1154 [45-7/16]
643 [25-5/16] 1154 [45-7/16]
643 [25-5/16] 1154 [45-7/16]
643 [25-5/16] 1454 [57-1/4]
643 [25-5/16] 1654 [65-1/8]
[Fig. 3.2.3] (P.3)
[Fig. 3.2.4] (Viewed from the direction of the arrow B) (P.3)
[Fig. 3.2.5] (Viewed from the direction of the arrow B) (P.3)
A Electric box
C Ceiling beam
D Access door 2 (450 mm x 450 mm [17-3/4 in x 17-3/4 in])
E Access door 1 (450 mm x 450 mm [17-3/4 in x 17-3/4 in])
F Maintenance access space
H Intake air
J Access door 3

3.3. Connecting indoor units to outdoor units

For connecting indoor units to outdoor units, refer to the outdoor unit installation
manual.
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.
* U se M10 for hanging bolts and anti-quake supporting members (field supply).
X (mm [in]) Y (mm [in])
330 [13] 300 [11-13/16]
330 [13] 300 [11-13/16]
330 [13] 300 [11-13/16]
340 [13-3/8] 375 [14-3/4]
325 [12-13/16] 525 [20-11/16]
325 [12-13/16] 525 [20-11/16]
325 [12-13/16] 525 [20-11/16]
325 [12-13/16] 525 [20-11/16]
330 [13] 675 [26-9/16]
332 [13-1/16] 725 [28-9/16]
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 Ceiling
G Supply air
I Bottom of indoor unit
K Access door 4
Z (mm [in]) Product Weight (kg [lb])
130 [5-1/8] 21 [47]
130 [5-1/8] 21 [47]
130 [5-1/8] 21 [47]
130 [5-1/8] 25 [55]
130 [5-1/8] 30 [67]
130 [5-1/8] 30 [67]
130 [5-1/8] 30 [67]
130 [5-1/8] 30 [67]
130 [5-1/8] 37 [82]
130 [5-1/8] 41 [91]
11