Local De Instalación (Fig. 6); Discharge Of Combustion Products (Fig. 7) - Ferroli PREXTHERM RSW 92N Instrucciones Para El Uso, La Instalación Y El Montaje

5.3 Local de instalación (Fig. 6)
PREXTHERM RSW N boilers must be installed in rooms to be used exclusively for that purpose, in accordance with current technical stan-
dards and legislation, and featuring adequately sized ventilation openings. The ventilation openings must be permanent, directly open to
the outside, and located in both high and low positions, in accordance with current standards. The location of the ventilation openings and
fuel supply, electrical power distribution and lighting circuits must comply with current legal provisions for the type of fuel used. To facilitate
the cleaning of the flue gas circuit, space must be left at the front of the boiler, greater than or equal to the length of the boiler body, and no
less than 1,300 mm. With the door open 90º, verify that the distance between the door and adjacent wall (X) is at least equal to the length
of the burner.The boiler support surface must be perfectly horizontal. A flat cement base is recommended, able to support the full weight of
the boiler plus the water content. For the base dimensions, see the R x Q distances (dimension table). If the burner is powered by a fuel gas
with a specific weight higher than air, the electrical parts must be located at least 500 mm from the floor. These boilers cannot be installed
outdoors because they are not designed to operate outside, and are not equipped with automatic frost protection systems.
INSTALLATION IN OLD SYSTEMS
Cuando se coloque la caldera en instalaciones antiguas, verifique que:
If the boiler is to be installed in an old system, verify that:
- The chimney is suitable for the temperature of the combustion products, has been calculated and manufactured in accordance with
current standards, and is airtight, insulated, and not blocked or choked.
- The electrical system has been installed by qualified personnel, in accordance with current standards.
- The fuel supply line and any tanks have been installed in accordance with current standards.
- The expansion vessel(s) can completely absorb the expansion of the fluid contained in the system.
- The flow-rate, static pressure, and direction of flow of the circulation pumps are suitable.
- The system is clean, free of slime and deposits, vented and watertight.
- A treatment system is available for supply/top-up water (see reference values).

5.4 Discharge of combustion products (Fig. 7)

The flue and flue stack fitting must be made in accordance with current standards and legislation, using rigid pipes that are resistant to high
temperatures, condensate, and mechanical stress, and are airtight.
The flue must ensure the minimum negative pressure established by current standards, with "zero" pressure considered at the fitting to the
flue.
Unsuitable or incorrectly sized flues can increase the noise produced by combustion, cause condensation problems, and negatively affect
the combustion parameters. Uninsulated flues are a source of danger. The joint seals must be made with materials that can resist tempera-
tures of at least 250ºC. Suitable points for measuring the flue gas temperature and analyzing the products of combustion must be prepared
in the connection between the boiler and the flue.
For the cross-section and height of the chimney, refer to current local and national regulations.
42 EN
fi g.6
PREXTHERM RSW N
fi g.7
A73020801