Jolly Mec J20 Ficha De Montaje, Uso Y Mantenimiento página 56

Installation - Operating area
For proper functioning and a good temperature
distribution, the boiler shoul be positioned in a location
where it is able to take in the air necessary for combustion
of the pellet (about 40 m³/h must be available), as laid
down in the standard governing the installation and in
accordance with local national standards. The volume of
the room must not be less than 15 m³. It is compulsory
to install an adequate outdoor air intake which would
allow oxidising air input necessary for correct operation
of the product. The air flow between the outside
and the installation premises can take place directly,
through an opening on an external wall of the premises
(preferred solution, see Figure 1a); or indirectly, through
air intake from the adjoining premises with air intake
and permanently communicating with the installation
premises (see Figure 1b). Adjoining premises excludes
those used as bedrooms, bathrooms, garages, common
areas of a building and, in general, premises in danger of
catching fire. Consider the doors and windows present
which could interfere with correct air flow to the boiler
and maintain 1.5 metres from any smoke outlet. The
air intake must have a minimum total net surface of
150 cm protected by an external grate which must
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not be obstructed and/or blocked and which should
be periodically cleaned: the aforementioned surface
should be increased as a result if there are other active
generators inside the premises (for example: electric fans
for stale air extraction, kitchen hood, other stoves, etc...),
which could generate a negative pressure environment.
A check is necessary, with all the equipment on, that the
drop in pressure between the room and the outdoors
does not exceed a value of 4 Pa.
The section must be calculated as follows:
S=k*Q>, where S is expressed in cm
power), k=6cm /kW. If for example Q=35kW, the
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minimum section should be 210cm2. If Q=25kW
the minimum section should be 150cm
FIGURA A- DIRETTAMENTE DALL'ESTERNO
FIGURE 1a- DIRECTLY FROM OUTSIDE
The air required for combustion can be connected
combustion directly to the external air intake
the air required for combustion can be connected
directly to the external air inlet, with a pipe of at least
Ø50mm (model J20-J25) or Ø60mm (model J30-J35),
with a maximum length of 2 linear metres.
maximum length of 2 linear metres; each bend in the
pipe is equivalent to a each bend in the pipe is equivalent
to a loss of one linear metre.
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, Q in kW (overall
2
.
2
FIGURA B- PER VIA INDIRETTA DAL LOCALE ADIACENTE
FIGURE 1b- INDIRECTLY FROM ADJACENT PREMISES
The boiler has a rear and front air
intake. Only the air taken from
the rear can be connected with
the outside but not the front,
therefore installation is forbidden
in a bedroom, bathroom and studio
flats.
It is forbidden to place the boi-
ler in an environment with an
explosive atmosphere. The floor
of the room where the boiler will
be installed must be adequately sized to
support its weight. Keep a minimum back
distance (A) of 10 cm, side (B) of 40 cm,
front of 100 cm and side- (C) of 50 cm. The-
se distances must be respected to allow
the technician to perform extraordinary
maintenance and for the safety of the pro-
duct itself. In case of particularly delicate
objects such as furniture, curtains, sofas,
considerably increase the distance from
the boiler.
In the case of flammable walls, the distan-
ces to be respected are A = 20cm, B = 40cm,
C = 50cm, D = 100cm.
In the presence of wood floors,
install a floor protection surface
in compliance with the rules in
force in the country
Min.
150/180/210
cm
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