Securing Installation And Service Space; Combining Indoor Units With Outdoor Units; Installing The Unit; Assembling The Unit - Mitsubishi Electric PFFY-P20VLEM-E Installationshandbuch

3.1. Securing installation and service space

For PFFY-P-VLEM-E
Model name (A)
20 · 25 1050
32 · 40 1170
50 · 63 1410
[Fig. 3.1.1] (P.2)
A Floor
C Ceiling
D Secure large enough space to prevent that blowout air is blocked.
For PFFY-P-VLRM-E
Model name (C)
20 · 25 660
32 · 40 780
50 · 63 1030
[Fig. 3.1.2] (P.2)
<Upward blowing type>
<Forward blowing type>
A Floor
C Piping space

4. Installing the unit

4.1. Assembling the unit

How to disassemble the unit
1 Loosen two screws fixing the front panel.
[Fig. 4.1.1] (P.2)
A Front panel
2 Hold the bottom of the front panel with your hands, and gently lift it. The front
panel should fall down forward.
[Fig. 4.1.2] (P.2)
3 Open the control panel cover, loosen the upper securing screw.
[Fig. 4.1.3] (P.2)
B Control panel cover
C Side casing
4 Pull up the side casing.
[Fig. 4.1.4] (P.2)
5 Install the unit frame in parallel with the floor securely when installing. If the
floor is not flat, be sure to use the supplied level adjusting screws to maintain
the unit body at level.
[Fig. 4.1.5] (P.2)
D Floor hole for fixing
E Level adjusting screws (supplied)
F Screw plate (supplied)
Note:
There are two level adjusting screws on both sides each, a total of four.
There are the following two methods of fixing the unit for purposes of preventing
the unit from falling down. Where fixing is necessary, screw the unit at the specified
position given below.
For fixing on the floor
[Fig. 4.1.6] (P.2)
<Viewed from bottom of the unit>
For fixing on the wall
[Fig. 4.1.7] (P.2)
<Viewed from front of the unit>
Model name (E)
20 · 25 1050
32 · 40 1170
50 · 63 1410
Note:
When fixing on the wall, fix the unit with the electrical parts removed from
the side.
(mm)
(B)
More than 50
More than 50
More than 50
B Wall
(mm)
(D)
More than 240
More than 240
More than 240
B Ceiling
D Electrical part service space
(F)
640
760
1000
3.2. Combining indoor units with outdoor
units
For combining indoor units with outdoor units, refer to the outdoor unit installation
manual.

4.2. Center of gravity and product weight

[Fig. 4.2.1] (P.2)
A Floor hole for fixing
For PFFY-P-VLEM-E
Model name W
PFFY-P20VLEM-E 640 100
PFFY-P25VLEM-E 640 100
PFFY-P32VLEM-E 760 100
PFFY-P40VLEM-E 760 100
PFFY-P50VLEM-E
1000 100
PFFY-P63VLEM-E 1000 100
For PFFY-P-VLRM-E
Model name W
PFFY-P20VLRM-E 640 100
PFFY-P25VLRM-E 640 100
PFFY-P32VLRM-E
760 100
PFFY-P40VLRM-E 760 100
PFFY-P50VLRM-E 1000 100
PFFY-P63VLRM-E 1000 100

4.3. Blowout changing procedure

(For PFFY-P-VLRM Series only)
To change the blowout from upward to forward in the case of the flush type units
PFFY-P-VLRM Series, follow the procedure below.
6 Remove the screws, lift to remove the blowout hole in direction 1, turn the
blowout hole 180° 2, and set the hole forward 3.
[Fig. 4.3.1] (P.3)
7 Set the blowout hole just as it was removed, and tighten the screws.
[Fig. 4.3.2] (P.3)
Notes:
• When handling the blowout hole, be careful that the insulating material
lined inside is not peeled off.
• Be careful not to get your hand injured by sheet metal edges.
• When connecting a duct to the blowout hole, be sure to insert the duct to
the hilt of the blowout hole, and provide insulating material over the duct.
Also, seal the joints between the duct and unit body with aluminum tape.
(8 8 8 8 8 )
• If you want to use the unit without connecting a duct to the blowout hole,
be sure to provide soft urethane form around the blowout hole in order to
prevent the blowout hole section from dew condensation. (9 9 9 9 9 )
[Fig. 4.3.3] (P.3)
A Duct
B Tape
C Blowout hole section
D Insulating material
E Insulating material (10 mm in thickness. Be provided around the blowout hole
section.)
L X Z Product Weight (kg)
17 335 23
17 335 23
17 335 25
17 335 26
17 335 30
17 335 32
L X Z Product Weight (kg)
17 335 18.5
17 335 18.5
17 335 20
17 335 21
17 335 25
17 335 27
7