Maintenance
33
20102152
GB
Boiler
Clean the boiler as indicated in its accompanying instructions in or-
der to maintain all the original combustion characteristics intact, es-
pecially the flue gas temperature and combustion chamber
pressure.
Flame inspection window
Clean the glass of the flame inspection window.
Gas leaks
Make sure there are no gas leaks on the conduit between the gas
meter and the burner.
Gas filter
Replace the gas filter when it is dirty.
Combustion
Adjust the burner if the combustion values found at the beginning
of the operation do not comply with the regulations in force or, at
any rate, do not produce good combustion.
Use the appropriate card to record the new combustion values;
they will be useful for subsequent controls.
6.3
Flame signal measurement
Check the flame signal through the parameter 954, as indicated in
Fig. 41. The displayed value is expressed in percentage.
The value during the operation must be higher than 24%. If at the
burner start-up the value is higher or equal of 18%, the burner locks
out due to the extraneous light.
For further and specific information, please refer to the specific in-
struction manual.
P
V
h
min s
%
Bi
ld
4
1
/0
70
7
The display shows parameter
954:
flashing on the
left.
On the right, the flame’s intensity is displayed as
a percentage.
Example:
954: 0.0
Fig. 41
S8161
