Mitsubishi Electric City Multi PMFY-P NBMU Serie Manual De Instalación página 4

2. Installing the indoor unit
G
F
D E
Ceiling panel
D
Rafter
E
Beam
F
Roof beam
G
Use inserts rated at 100-150 kg (250-350 lbs.) each (procure locally)
H
Suspension bolts M10 (3/8") (procure locally)
I
Steel reinforcing rod
J
C channel
K
Channel suspension bracket
L
M10 suspension bolt
M
A
C
D
E
C
*1
F
G
B
en
B
Suspension bolt (3/8" or M10)
A
Clear plastic tubing
B
Underside of bracket
C
Secure front panel here
D
Make these surfaces are flush with each other (0 - 3 mm (0 - 1/8 in.))
E
3
L
M
H
I
Fig. 2-4
Suspension bolt
A
Ceiling panel
B
Nut
C
Washer (with insulation)
D
Washer (without insulation)
E
B
Fig. 2-5
A
C
D
Suspension bolt (3/8" or M10)
A
Ceiling surface
B
*
E
Nut (3/8" or M10)
C
Washer (with insulation)
D
2
Washer
E
*
1
C
(Install with insulation facing down)
F
Measurement to upper face of bracket
G
Fig. 2-6
A
C
D
Fig. 2-7
mm (in.)
Wooden structures (Fig. 2-4)
1
K
• Use tie beams (single storied houses) or second floor beams (two story houses)
as reinforcing members.
• Wooden beams for suspending air conditioners must be sturdy and their sides
must be at least 6 cm (2-3/8 in.) long if the beams are separated by not more
than 90 cm (35-7/16 in.) and their sides must be at least 9 cm (3-9/16 in.) long if
the beams are separated by as much as 180 cm (70-7/8 in.). The size of the sus-
pension bolts should be ø10 (3/8"). (The bolts do not come with the unit.)
• Use channel, duct and other parts procured locally to suspend the indoor unit.
J
Ferro-concrete structures
2
Secure the suspension bolts using the method shown, or use steel or wooden
hangers, etc. to install the suspension bolts.
mm (in.)
2.4. Unit suspension procedures (Fig. 2-5)
Procure 3/8" bolts or M10 bolts locally.
• Adjust the length of the bolt's protrusion from the ceiling surface beforehand.
*1. When using an extra upper nut in suspending the unit, in some cases you may
have to add it later.
2
1
Check the pitch of the suspension bolt. (340 mm × 811 mm (13-1/2 in. × 32 in.))
mm (in.)
(Fig. 2-6)
1. Thread washers
suspension bolt in advance.
* Do this in the following order (from the top): nut, insulated washer
washer without insulation
* Position insulated washer
the figure.
2. Lift the unit into place, aligned properly with the suspension bolt. Pass the
bracket between washers
Do the same in all four places.
* Make sure the suspension bolt extends 20 mm (3/4 in.) or more from the
surface of the ceiling. Otherwise you will not be able to install the cover
panel (sold separately).
3. If the long opening in the bracket and opening in the ceiling do not align, adjust
them until they do.
4. Check that the 4 corners are all level, using a spirit level or clear plastic tubing
with water in it.
* Make sure that any slant in the unit after installation is less than 0.5 degrees
mm (in.)
(approx. 6 mm (1/4 in.) on the long dimension of the unit).
5. Tighten all the nuts. (Fig. 2-7)
E
(supplied) and their nuts (procured locally) onto the
1 2
, two nuts.
1
with the insulated surface pointing down, as in
2
and , which are already in place, and secure it.
1 2
,
2