Royal BETTY 3.5 Installation, User And Maintenance Manual page 27

7.2 COMBUSTION AIR
While it is operating, the cooker uses a modest
quantity of air taken from the room in which is it
installed: this air must be replaced by means of an
air intake outside the room itself (- 7.1 -).
The EXTERNAL AIR INTAKE is indispensable
especially if doors and windows are double-glazed
and sealed.
If the wall behind the cooker is an outside wall,
make a comburent air inlet hole at a height from
If several cookers are installed in the same place,
it is advisable to increase the cross-section of the
external air intake for each cooker to avoid low air
pressure and consequent formation of smoke.
The hole must be protected, on the outside with
a permanent ventilation grille suitable to prevent
insects and small animals from entering. In
particularly windy areas that are exposed to bad
weather it is advisable to install a rain and wind
guard.
If the wall behind the cooker is not an outside
one, it is possible to make a hole connecting
to the outside on an adjacent wall as long as
it communicates permanently with the rooms
in which the stoves are installed by means
of a transit grille.
The UNI 10683 standard forbids taking air
for combustion from garages, rooms where
If there are other heating appliances in the same
room, the combustion air intakes must be able
to guarantee the necessary volume of air to
ensure correct operation of all the devices.
cod. 00 477 3191 - 03/2016 - Royal - PN - Italy
COMBUSTION AIR,
- 7.1 -
- 7.2 -
27/68