10
ENGLISH
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 fixing prongs click
into place in the retainers provided to that effect.
Drainage line
Interconnection cable
Note:
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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 qualified 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 flare nuts and flare the end of the pipes.
• Check that no foreign bodies are inside the piping.
• Align the central of the connecting pipes and tighten
the flare nut.
• Fix piping with pipe clamps and check that any pipe
vibrations cannot be transmitted to the building
structure.
• 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 the difference in elevation between the indoor unit
and outdoor unit is greater than 5 meter, install an oil trap
every 5 meters.
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 flare connectors and flare 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
meters.
NOTE
Unit size
12
18
24
30
36
30
65
65
g/m
30
30
J435.indd 10
1/22/08 11:13:56 AM
Unit size
Max. refrigerant
pipe length
m
Max. difference
in level
m
12 18 24 30 36
10 15 20 20 30
5
8
10 10 15
