Mitsubishi Electric PKA-A-LA Series Installation Manual page 5

3. Installing the indoor unit
D
E
D
A
F
D
Fig. 3-4
C
D
B
Fig. 3-5
C
D
Fig. 3-6
1 )
A
B
Fig. 3-7
D
C
B
D
: Points to be fastened (5 points)
: Points to be fastened only when
using the lower hook (2 points)
A
B
A
E
2 )
3.2.3. Installing the wall mounting fixture
► Since the indoor unit weighs near 13 kg, 29 lbs, selection of the mounting
location requires thorough consideration. If the wall does not seem to be
strong enough, reinforce it with boards or beams before installation.
► The mounting fixture must be secured at both ends and at the centre, if
possible. Never fix it at a single spot or in any nonsymetrical way.
(If possible, secure the fixture at all the positions marked with a bold
arrow.)
Warning:
If possible, secure the fixture at all positions indicated with a bold arrow.
Caution:
• The unit body must be mounted horizontally.
• Fasten at the holes as shown by the arrows.
(Fig. 3-4)
A Min. 119 mm, 4-11/16 inch (669 mm, 26-11/32 inch or greater with optional drain pump
installation)
B Min. 224 mm, 8-13/16 inch
C Min. 75 mm, 2-61/64 inch (Use the hook positioned on the lower part of the mount board
when the dimension is less than 100 mm, 3-15/16 inch with left, rear left, or lower left
piping, and optional drain pump installation. Refer to 3.5. for details.)
D Fixing screws (4 × 25) 2
E Level
F Mount board 1
3.3. When embedding pipes into the wall (Fig. 3-5)
• The pipes are on the bottom left.
• When the cooling pipe, drain pipes internal/external connection lines etc are to
be embedded into the wall in advance, the extruding pipes etc, may have to be
bent and have their length modified to suit the unit.
• Use marking on the mount board as a reference when adjusting the length of the
embedded cooling pipe.
• During construction, give the length of the extruding pipes etc some leeway.
A Mount board 1
B Reference marking for flare connection
C Through hole
D On-site piping
3.4. Preparing the indoor unit
* Check beforehand because the preparatory work will differ depending on the
exiting direction of the piping.
* When bending the piping, bend gradually while maintaining the base of the
piping exiting portion. (Abrupt bending will cause misshaping of the piping.)
* Cut off outlet of the pipe depending on the exiting direction of the piping.
Extraction and processing of the piping and wiring (Fig. 3-6)
1. Connection of indoor/outdoor wiring → See page 9.
2. Wrap the felt tape 3 in the range of the refrigerant piping and drain hose which
will be housed within the piping space of the indoor unit.
• Wrap the felt tape 3 securely from the base for each of the refrigerant piping
and the drain hose.
• Overlap the felt tape 3 at one-half of the tape width.
• Fasten the end portion of the wrapping with vinyl tape.
A Liquid pipe
B Gas pipe
C Indoor/outdoor connection cable
D Drain hose
E Felt tape 3
3. Be careful that the drain hose is not raised, and that contact is not made with the
indoor unit box body.
Do not pull the drain hose forcefully because it might come out.
Rear, right and lower piping (Fig. 3-7)
1) Be careful that the drain hose is not raised, and that contact is not made with
the indoor unit box body.
Arrange the drain hose at the underside of the piping and wrap it with felt
tape 3.
2) Securely wrap the felt tape 3 starting from the base. (Overlap the felt tape at
one-half of the tape width.)
A Cut off for right piping.
B Cut off for lower piping.
en
4