2861
4
GB
3.3
FIRING RATES
TEST BOILER
The firing rate has been defined according to EN 676 standard.
COMMERCIAL BOILERS
The burner-boiler matching is assured if the boiler conforms to EN 303 and the combustion chamber
dimensions are similar to those shown in the diagram EN 676. For applications where the boiler does not
conform to EN 303, or where the combustion chamber is much smaller than the dimensions given in
EN 676, please consult the manufacturers.
Thermal power
Pr
ess
u
re
in
t
h
e
co
mb
u
s
ti
o
n
ch
am
b
e
r –
m
b
a
r
A
SEE NOTE PAGE 11
FIRING RANGE 916M
FIRING RANGE 917M
For the burner to work properly, starting must always occur within the relevant firing range (see table on
page 12).
ATTENTION
FIRING RANGE 918M
918M
P
re
ssu
re
in
t
h
e c
o
mb
u
s
ti
o
n
ch
amb
e
r –
mb
ar
Thermal power
0
4.8
1.6
0.8
2.4
3.2
4.0
5.6
917M
916M
D4451
kW
0
kcal/h
50
200
50,000
100
150
0
100,000
150,000
-0.5
A
4.8
1.6
2.4
3.2
4.0
0.8
0
D4455
kW
kcal/h
100,000
150,000
150
50
50,000
250
200,000
200
-0.5
100
A
