BIO Pellet Stoves
8
External air intake
We recommend to set an air intake from the outside to have a healthy inner environment. The air flow
between the outside and the room can be vented directly from a duct on the external wall of the room
(best solution, see picture 5-A) or indirectly from adjacent rooms (see picture 5-B) as long as these
rooms are not bedrooms, garages, store rooms, rooms that present the risk of fire or with an opposite
draft due to a suction system without air intake.
The air intake duct must have an inner cross section of at least 20 cm
2
but this parameter must be
increased if there is an electric ventilation system to air the room (ex. Kitchen hood) (see picture 7). The
air intake duct must be located near the floor and safe from any accidental obstruction.
Pic. 5
Pic. 6
Air necessary for combustion
All types of combustion need air (oxygen). Hence, every stove extracts air from the room in which it is
installed and then the air has to be returned. Bad combustion may be caused by poor air circulation
inside the house and this often occurs in modern homes, which have hermetically sealed doors and
windows. The situation can also be problematical when, on the other hand, there are drafts inside the
room (generated by fans in the kitchen or bathroom for example).
To avoid this type of problem we recommend installing a permanent ventilation grid in a window or near
the stove. Air intake directly from the outside is compulsory.
WARNING!
Use only certified pipes and steel preferably. Pipes in synthetic material are aluminium must never be
used.
Comburent air duct
We recommend to vent the flow of air for combustion purposes directly from the outside through a pipe
with diameter 40 mm, located behind the stove (see pages 20, 21) that allows a better combustion with
no risk against safety.
When the installation takes place it is necessary to verify the minimum distances of the comburent air
duct taken directly from the outside as (for example) a window or an open door can take off the
comburent air necessary to the stove (see hereunder table). The duct outlet must be covered with a grid
strainer against birds. If extractor fans are used in the same room or place where the appliance is
installed this may create problems.
Maximum capacity of electric ventilation(m
3
/h)
Net additional section (cm
2
)
Up to 50
140
Over 50 and up to 100
280
Over 100 and up to 150
420
Summary of Contents for BIO80
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