ZEFIRO
3
- ZEN AIRTIGHT
10
We recommend to check with your chimney flue manufacturer the safety distances which must be respected
and the type of insulating material. The aforesaid regulations are valid also for holes made on the wall (EN
13501 - EN 13063 - EN 1856 - EN 1806 - EN 15827).
4
COMBUSTION AIR
4.1
EXTERNAL AIR INLET
Fig. 10 - Direct air inflow
LEGEND
Fig. 10
1
Room to ventilate
2
External air inlet
• The room must be endowed with an external air recycling for a good climate in your ambient.
• The air inflow from outside to the inner occurs directly, through an opening on the external wall of the room (see
Fig. 10
).
• Bedrooms, garages, and store of flammable materials are excluded.
• The air inlet should have a total net surface of 80 sqcm
2
: the aforesaid surface is to widen if inside the room there are other
activated appliances (for example: electric ventilators for foul air suction, cooker hoods, other stoves, etc...) which depress the
environment.
• At switched on appliance it is necessary to check that the pressure fall between the room and the outside does not exceed 4,0
Pa value: if necessary widen the air inlet (EN 13384).
• The air inlet must be realized at a height close to the floor with an external grid against birds. In such a way it cannot be ob-
structed by any object.
•
In case of installation with sealed-chamber the air inlet is not necessary.
