11
7 - POSITIONING AND INSTALLATION
7.2 - Choice of location
When choosing the location, whatever may be the selected fashion,
the following precautions have to be taken into consideration:
■
It is mandatory to comply with norm EN 378-3 on Safety and
Environmental Requirements. Part 3: “In situ” installation and
protection to people.
■
Important: In units with R-454B refrigerant consult the “Rooftop
A2L Installation guide” (Nb. 10714), which includes a set of
recommendations for choosing the most suitable site. It is the
customer’s responsibility to carry out the risk analysis of the
installation.
■
Important: The unit performance is not guaranteed in case of
installation at an altitude of more than 1000 meters.
■
It is necessary to check that the structure supports the unit’s
weigh (please consult the weight in section 7.5).
■
The area where the unit will be located must be perfectly
accessible for cleaning and maintenance operations (please
consult the “Recommended service clearance” in section 7.6).
■
Since the unit is designed to work outdoors, some speci
fi
c
installation norms must be followed:
- The unit will be located on the roof of the premises. If it is
foreseen that it will work more on heating than on cooling, it
is preferable to direct the coil towards the sun. If little work
on heating is foreseen, choose North direction.
- The chosen location must not
fl
ood and must be above the
average height the snow reaches in that region.
- Do not install the unit in a closed enclosure or in conditions
that originate air recirculation.
- Avoid placing obstacles in the air supply or return. No obstacle
may impede the air aspiration into the coils.
- Do not
fi
x the outdoor coil side in the predominant wind
direction.
- Do not place the fresh air hood in the prevailing wind direction
to prevent water from entering.
Minimum area for indoor air distribution (R-454B
refrigerant)
The unit with refrigerant R-454B (A2L
fl
uid) needs a minimum
surface in the room where the air supplied by its indoor circuit will
be distributed, according to EN-378-1:
Important: It is the customer’s responsibility to carry out the risk
analysis of the installation and, as a result of that analysis, to take
the necessary measures according to standard EN-378-1. Consult
the recommendations given in the “A2L rooftop installation guide”
(Nb. 10714).
These units are equipped as standard with a leak detector that
from a certain concentration of gas (parametrizable) activates
a PROTECTION MODE until the mitigation of the leak (see the
chapter on “Safety elements”.
50FF/FC
100
110
120
130
145
160
Refrigerant charge
per circuit (kg)
15,5
15,5
15,5
17,0
17,0
17,3
Minimum area (m
2
)
119,4 119,4 119,4 131,0 131,0 133,3
50FF/FC
170
180
200
220
250
280
Refrigerant charge
per circuit (kg)
17,5
24,5
25,5
25,5
30,5
31,0
Minimum area (m
2
)
134,8 189,0 196,5 196,5 235,0 238,8
General information on potentially
fl
ammable zone and
ignition sources (R-454B refrigerant)
The full unit, including all options & accessories that are delivered
by the manufacturer, has been quali
fi
ed for the use with A2L
refrigerant.
For that purpose, the manufacturer complies with EN 378-2 §6.2.14
and de
fi
ned potentially
fl
ammable zone using EN 60079-10-1 in
order to identify where ignition sources must not be present. Then
the manufacturer designed the machine in order that, if the unit
is used the way it was designed for, there is no internal ignition
source in the internal potentially
fl
ammable zone.
Thus, the only residual risk is to have an ignition source introduced
in the potentially
fl
ammable zone by the user. For that purpose,
the manufacturer decided to represent the external potentially
fl
ammable zone where the user must not introduce ignition source.
This indication is only here to help our customer to identify the
limits of the
fl
ammability risk.
But there is no risk of explosion linked to the used of A2L refrigerant
due to the machine itself.
Note (the following information is provided by the manufacturer
exclusively for informational purposes. The application of the
following directives relies exclusively upon the user):
According to directives 2009/104/EC and 1999/92/EC, these zones
might be quali
fi
ed by the user as ATEX Zone based on the user’s
own risk analysis for which the user remains solely responsible.
According to the de
fi
nition of Annex I of directive 1999/92/EC,
this zone might be classi
fi
ed Zone 2 because it might be a place
in which an explosive atmosphere consisting of a mixture of air
with
fl
ammable substances in the form of gas is not likely to occur
in normal operation but, if it does occur, will persist for a short
period only.
In case an additional equipment is necessary (motorized valve,
pump, etc.…), it must be:
■
installed out of de
fi
ned potentially
fl
ammable zone;
■
quali
fi
ed as a non-ignition source for the
fl
uid used.
0,6m
0,6m
0,6m
0,6m
Summary of Contents for 50FC Series
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