THERMOROSSI BOSKY CHEF Fiori, Installation, User & Service Manual

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7.4 VENTILATION OF THE ROOMS
It is essential for the room in which the appliance is installed to be well-ventilated, also to guarantee
secondary air for combustion in the cooker.
The natural air flow occurs directly through permanent apertures to the outside made in the walls of
the room, or by means of single or multiple ventilation ducting.
The ventilating air must come from outside and if possible, away from sources of pollution. Indirect
ventilation is also allowed by taking in air from rooms adjacent the one where the heater is installed
taki
ng into account all the warnings and limitations specified below. •The apertures in the walls must
comply with the following requirements:
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-have an unobstructed section of at least 6cm² for each Kw of installed thermal power, with a
minimum limit of 100cm²;
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be made in such a way that the vent openings, both on the inside and outside of the wall, cannot be
obstructed;
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be protected with grills or similar systems in order not to reduce the section described above;- be
situated at floor-level.
The air flow can also be obtained from an adjacent room as long as:
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the adjacent room is equipped with direct ventilation in compliance with the points described above;
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in the room to be ventilated the installed appliances are only connected to one flue outlet;
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the adjacent room is not used as a bedroom or a common area of the building;
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the adjacent room is not a room with a fire hazard, such as storage sheds, garages, combustible
material store rooms, etc...;
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the adjacent room does not become a vacuum compared to the room to be ventilated due to an
opposite draught effect;
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the air flow from the adjacent room to the room to be ventilated is unobstructed through the
permanent apertures having an overall net section of no less than that indicated above. These
apertures can be obtained by enlarging the space between the door and the floor.
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Under Reg J in the UK, an air vent is not required for older properties built before about 2005.
Properties that have been ‘improved’ with extra insulation and draught proofing of windows and
doors do require a vent.
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If the chimney/cooker is to be fitted on an external wall the air supply can be taken straight
from the outside. A 5” (100mm) diameter hole needs to be drilled in the correct place, 138mm
above the hearth and the cooker ‘manifold/extension air pipe’ kit purchased and fitted. A
proprietary grille is supplied with the kit, if not used an air brick or non
- closing vent should be fitted
to ensure the air supply is not blocked in any way.
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The manifold method of supplying air is always to be preferred as there will be no draught in
the room especially when the cooker is not in use.
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If the cooker is not on an outside wall or the direct air supply method cannot be used, an air
vent must be supplied in the room in which the cooker is fitted.
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The sizes of the vents required is: 1650mm sq. (50mm diam.)
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Only permanently open vents can be used and consideration should be given to draught
when the cooker is not in use. Site these vents carefully. The vent covers should comply with
Building Regulations Part J and should be sited where they cannot be blocked.
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Extractor Fans: These suck air out of the room and cause a negative pressure in the room so
they must have their own air vent to counter this. Even when the air is taken directly from the
outside using the manifold system a vent will be required for any extractor fan fitted in the same
room or adjacent rooms. Great care must be taken with restaurant/café kitchens which have
professional levels of extraction
.
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