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4.3.6
Installation in places with heavy snowfall
Snow can accumulate around and above the machine and low outside temperatures can freeze the snow in blocks of ice that block
the fan grille or the coil.
This condition may cause a malfunction or breakage of the machine.
Check and keep the machine clear of snow.
4.3.7
Installation in places with strong winds for AC fans
Installation in areas sheltered from the wind is necessary in order to prevent dominant winds and possible air recirculation from
interfering with fan operation and condensation control. For this reason, where strong winds are possible and for installations with
horizontal air flow, it is suggested to place the condensers in a partial barrier to limit direct winds on the fans. These recommendations
are not necessary with EC fans.
If it is not possible to install the condenser in an area protected from the wind, it is recommended to install it with vertical
air flow.
Machines with horizontal air flow
Strong winds (above 50 km/h) generate very high forces on the machine structure. It is therefore necessary to counteract these forces
with anchorages suitable for the support structures (refer to the technical manual).
4.4 Connection of the cooling circuit to the internal machine
OBLIGATION:
The cooling circuits must be completed by qualified personnel.
All the works, the choice of the components and the materials used must comply with the "Good
Practices", according to the regulations in force in the different countries, taking into account the
intended operating conditions and uses of the equipment.
Errors in the design and/or connection of the cooling circuits can cause irreparable damage to the
compressor or malfunctioning of the machine.
The machine Is delivered with a charge for tightness testing.
Discharge the cooling circuit of the machine through the Schrader valve located on the coil manifold.
The cooling circuit connection must be completed as defined in the design phase.
Refer to the dimensional drawing of the machine for the spacing of the connections.
4.4.1
Type of copper to be used for the cooling line
SOFT COPPER:
HARD COPPER:
4.4.2
General information for the completion of the cooling line
The cooling line must have a rational and practical path, in order to:
•
limit pressure drops;
•
reduce the coolant content;
•
facilitate the return of lubricant oil to the compressor;
•
facilitate the flow of liquid coolant to the expansion valve;
•
prevent the return of liquid coolant with the compressor stopped;
•
vertical sections must be reduced to the minimum;
•
always make large bends, with a minimum radius at least equal to the diameter of the pipe;
•
always use a roller tube cutter to cut the pipes. Do not use a hacksaw, as it causes internal burrs and shavings;
•
fix the pipes both horizontally and vertically with copper or plastic collars every 2 m;
•
do not use galvanized iron collars, since corrosion may occur at the point of contact with the copper pipe;
•
for insulated pipes, it is advisable to use collars with insulating shells;
•
keep a distance of at least 20 mm between piping;
•
do not place electric cables nearby, as they may deteriorate;
•
make "expansion joints" on the line, to balance the natural elongation / shrinkage of the pipes, as shown in the figure:
Installation, use and maintenance manual
It's soft and malleable, and can be shaped or bent to make bends, siphons, etc. Use a pipe bending tool
for the bending activities.
Avoid repeated bending or shaping, as the material will gradually harden at the point of the bend and may
break.
It's rather stiff, and not suitable for being bent. Only to be used for straight sections. To make bends,
siphons, etc. use forged fittings.
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