20191053
10
GB
Technical description of the burner
3.8.1
Commercial boilers
The burner/boiler combination does not pose any problems if the
boiler is EC approved and its combustion chamber dimensions
are similar to those indicated in the diagram (Fig. 3).
If the burner must be combined with a boiler that has not been EC
approved and/or its combustion chamber dimensions are clearly
smaller than those indicated in the diagram (Fig. 3), consult the
manufacturer.
The burners are suitable for operation on either flame-inversion
boilers
*
or boilers with combustion chambers featuring flow from
the base (three flue passes) on which the best results are ob-
tained in terms of low NOx emissions.
The burner-boiler match is assured where the boiler is EC type-
approved; for boilers and furnaces with combustion chambers
featuring dimensions differing considerably from those given in
the diagram (Fig. 4), it is advisable to perform preliminary tests.
* The maximum depth of the boiler door is referred to
dimension “I”. (Fig. 1 on page 8).
NOTE:
For flame inversion boilers, a kit is available to reduce CO
emissions if required. The kit includes 5 gas pipes, identical
to the other 5 already fitted to the burner head. In standard
conditions, the burner head is fitted with a second group of
pipes, with gas outlet in a different direction with respect to
the others. With this Kit, the second group of pipes is re-
placed, so that all the pipes are the same. After fitting the kit,
ensure they work correctly by measuring the CO and flue
gases emissions.
Fig. 3
Combu
sti
on chambe
r
m
D715
Fig. 4
*
D1079
