Connection To The Chimney; Flow Of Air In The Place Of Installation During Combustion; Accepted / Unaccepted Fuels - LA NORDICA TermoRossella Plus DSA Instructions For Installation, Use And Maintenance Manual

TERMOROSSELLA Plus DSA / Forno DSA – TERMONICOLETTA DSA / Forno DSA

6. CONNECTION TO THE CHIMNEY

The appliances with automatic door closure (type 1) must function, for safety reasons, with the fireplace door closed
(with exception of the fuel loading phase or removal of ash).
The appliances that do not have automatic door closure (type 2) must be connected to their own flue. Functioning with
the door open is only allowed under surveillance.
ATTENTION: whenever the connection passes particular composites of inflammable materials, all inflammable
materials within a range of 20 cm around the pipe must be replaced by non-flammable and heat resistant
materials.
The thermoheating stove has an upper fumes pipe. The junction pipe for connection to the chimney must be as short
as possible and the joints of the individual pipes must be hermetic. The connection to the chimney must be made
using strong, stable pipes (a thickness of 2 mm is recommended). The fumes outlet pipe must be fixed hermetically to
the chimney. The internal diameter of the connection pipe must correspond to the external diameter of the fumes
drain stub pipe of the thermoheating stove. This is guaranteed by pipes in compliance with DIN 1298.
For good functioning of the appliance it is essential that sufficient air for combustion is introduced into the place of
installation (see paragraph 7).
The depression at the chimney (CHIMNEY EFFECT) must be at least 17-20 Pascal (=1.7-2 mm of water column).
The measurement must always be made when the appliance is hot nominal heat yield). When the depression
exceeds 20 Pascal (2 mm of water column) this must be reduced with the installation of an additional chimney effect
regulator (false air valve) on the outlet pipe or in the chimney.

7. FLOW OF AIR IN THE PLACE OF INSTALLATION DURING COMBUSTION

As the stoves obtain their combustion air from the room where installed, it is essential that a sufficient amount of air is
introduced into the room itself. In the case of leak-tight windows and doors (e.g. .houses built with energy saving
criteria) it is possible that the fresh air is no longer guaranteed and this jeopardises the chimney effect of the
appliance, tour well-being and safety. An additional source of fresh air must therefore be guaranteed by means of an
external air inlet positioned in the vicinity of the appliance or by laying a pipe for the combustion air that leads outside
or to a nearby aired room, except the boiler room or garage (PROHIBITED).
The connection pipe must be smooth with a minimum diameter of 120 mm; it must have a maximum length of 4 m
and have no more than three bends. Whenever this is connected directly to the outside it must have a relevant
windbreak.
The entry of air for combustion in the place of installation must not be
thermoheating stove. It is absolutely necessary that the same amount of air is introduced into the environments where
stoves function with natural chimney effect that is required for combustion, i.e. up to 25 m³/hour. The natural
recirculation of the air must be guaranteed by several fixed openings towards the outside. Their size is established by
the relative regulations regarding the subject. Request information from your chimney sweep. The openings must be
protected with grids and must never be blocked. An extraction hood (sucking) installed in the same room or in an
adjacent one causes a depression in the environment. This causes the escape of flue gases (dense smoke, odour); it
is therefore necessary to assure a greater flow of fresh air.
The depression of a suction hood can, in the worst hypothesis,
transform the thermoheating stove flue into an external air inlet
sucking the fumes back into the environment with serious
consequences for the people present.
OPTIONAL
For improved well-being and relative oxygenation of the environment
itself, the thermoheating stove combustion air can be withdrawn directly
from outdoors. To do this. the thermoheating stove can be connected to
an external air intake by means of an optional connection (Picture 10 -
C) (Kit d. 120)

8. ACCEPTED / UNACCEPTED FUELS

Wooden logs are the accepted fuel. Only dry logs must be used (max. water content 20%). A maximum of 2 or 3 logs
must be loaded at a time. The pieces of wood must have a maximum length of about 25 cm and a maximum
circumference of 25 cm.
The wood used as fuel must have a water content lower than 20% and this is obtained with a drying time of at last
one year (softwood) or two years (hardwood) by placing it in a dry ventilated place (e.g. under a roof). Humid wood
makes combustion more difficult, as a lager amount of energy is required to make the water present evaporate. The
water content also has the disadvantage, with the lowering of the temperature, of making the water condense first in
the fireplace and then in the chimney. Fresh wood contains about 60% H
7197100 Rev.05 – EN
obstructed during functioning
Picture 10
O; therefore it is unsuitable for burning.
2
of the
C
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