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Indoor Unit Fixing
• Thread the indoor unit piping and cable through the hole.
• Hang the top of the unit onto the upper ridge of them in mounting plate.
• Make sure that the unit is correctly hung in place by sliding it to the left, then to the right.
• Press the bottom left and bottom right hand corners of the unit against the mounting plate until the xing prongs click
into place in the retainers provided to that e ect.
OUTDOOR UNIT
Fixing and Piping
• Piping must be performed by quali ed personnel
according to good refrigeration systems practices.
• Piping materials and insulation materials must be of
refrigerant quality.
• Select the pipe diameters according to the size of unit
and cut the pipe to design length by using pipe cutter.
• Install the are nuts and
• Check that no foreign bodies are inside the piping.
• Align the central of the connecting pipes and tighten
the are nut.
• Fix piping with pipe clamps and check that any pipe
vibrations cannot be transmitted to the building structure.
NOTES
• Connect the pipe correctly.
• Do not apply the excessive torque.
• Use an appropriate bending tool to form curves and
avoid over-tightening the refrigerant tubes.
• To prevent heat loss, the two lines must be insulated
separately.
Maximum Piping Length
Unit size
Max. refrigerant
m
pipe length
Max. di erence
m
in level
Note: Where the di erence in elevation between the indoor
unit and the outdoor unit is greater than 5 meters, install
an oil trap every 5 meters.
12
ENGLISH
J440-EN.indd 12
Drainage line
Interconnection cable
are the end of the pipes.
09
12
18
20
20
25
10
8
8
a
Condensate
drainage line
Vinyl tape
Note: The condensate evacuation line should be taped to the
refrigerant lines with vinyl tape.
The suction line must have a 2% gradient up to the
compressor on horizontal sections.
Where piping lengths are unusually long and include a
large number of oil traps, it may be necessary to adjust
to compressor charge.
Refrigerant charge to be added per extra meter
of piping length when more than 7 meters.
Unit size
09
30
g/m
Refrigerant piping connections
(FLARE connections)
To avoid alteration of unit capacities, check that piping
lengths and changes in elevation are kept to a strict
minimum.
Before connecting the refrigerant lines, follow the
procedures below (if pre-charged connection lines are
not supplied):
• Select copper pipe diameters according to the size of
unit to be installed.
• Install the refrigeration lines, checking that no foreign
bodies get inside the piping.
• Install the are connectors and
pipes.
• Evacuate the piping. This operation, which should last
at least 15 minutes if there are large piping lengths and
changes in elevation, should be followed by a leak test.
a) Access plate for the
condensate drainage
pump detection
(condensate pump is
available as an
accessory).
MODELS
12
18
30
30
are the ends of the
2/18/08 2:50:03 PM
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