ENGLISH
10
■ 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 fi xing prongs
click into place in the retainers provided to that effect.
Drainage line
Interconnection cable
Note: The condensate evacuation line should be taped to the
refrigerant lines with vinyl tape.
a) Access plate for the
condensate drainage
pump detection
(condensate pump is
available as an
accessory).
Condensate
drainage line
Vinyl tape
a
OUTDOOR UNIT
■ Fixing and Piping
• Piping must be performed by qualifi ed personnel ac-
cording 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 cut-
ter.
• Install the fl are nuts and fl are the end of the pipes.
• Check that no foreign bodies are inside the piping.
• Align the central of the connecting pipes and tighten
the fl are nut.
• Fix piping with pipe clamps and check that any pipe
vibrations cannot be transmitted to the building struc-
ture.
• 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
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 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
boodies get inside the piping.
• Install the fl are connectors and fl are the ends of the
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.
Refrigerant charge to be added per extra meter
of piping length when more than
7.5 meters.
NOTES
Unit size
MODELS
7 9 12 18 24 28 30
(m) 10 15 18 20
20 20 20
Unit size
MODELS
7 9 12 18 24 28 30
g/m 30 30 30 30 65 65 65
J277-EN.indd 10J277-EN.indd 10 26.12.2005 15:15:23 Uhr26.12.2005 15:15:23 Uhr
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