3 Efficient and low-emission operation
4.10 Combustion principle
Air conveyance in the heating boiler
The air required for combustion:
–
The
primary air
is sucked through the primary air
flaps
1
into the filling chamber
2
and exits into the
filling chamber at the point of the primary air ope-
nings
3
(small drilled holes, arranged at the bottom
left and right of the filling chamber).
–
The
secondary air
is sucked for the centrally arran-
ged secondary air flap
4
, and the air exits into the
combustion chamber
5
(i.e. below the stainless
steel combustion grate).
In the combustion chamber, the primary and secon-
dary air mix; this is where the combustion process
takes place (downfiring combustion technology).
The hot combustion air flows through the heat exchan-
ger
6
and leaves the boiler through the flue pipe into the
chimney. The speed-controlled ID fan
7
on the rear of
the boler sucks the air through the boiler.
Operation manual
therminator II touch
7
