31
COMMISSIONING AND MAINTENANCE
3.2.2
Resetting the burner and safety thermostat
To restore normal startup conditions, open the protective cover
over the control panel and turn the function selector to posi-
tion (II) "Reset burner" for at least 1 second before returning it to
position (I). Wait for the burner to complete the entire ignition
cycle again, up to the ignition of the flame.
20
40
60
80
100
0
120
If boiler temperature becomes too high, the manual reset safety
thermostat trips.
9
No warning signal is given if the safety thermostat trips, but
the fact that is has tripped can be seen from the boiler tem-
perature gauge (T>110°C).
Proceed as follows to reset the safety thermostat:
− Wait until boiler temperature falls below 80°C;
− Open the control panel cover;
− Unscrew the cap over the safety thermostat reset button;
− Press the reset button;
− Replace the cap.
20
40
60
80
100
0
120
9
Eliminate the cause of the overheating before restarting the
boiler.
3.3
Checks during and after initial start-up
Once the boiler has started up, make sure that it shuts down
and re-starts properly when:
− The boiler thermostat setting is changed;
− The function selector is moved from position (
I
) to (
0
) and
back;
20
100
4
40 60 80
3 2 1
0
0
120
20
100
4
40 60 80
3 2 1
0
0
120
− The "Summer/Winter" selector is set to (
II
) "Winter", the
boiler thermostat is adjusted to its minimum setting and
the storage cylinder temperature setpoint is changed
(
GITRÈ 5 B/100
models only). Then turn the function se-
lector from position (
I
) to (
0
) and back;
20
40
60
80
100
0
120
20
40
60
80
100
0
120
− The "Summer/Winter" selector is set to (
I
) "Summer" and
the storage cylinder temperature setpoint is changed.
(
GITRÈ 5 B/100
models only). Then turn the function se-
lector from position (
I
) to (
0
) and back;
20
40
60
80
100
0
120
20
40
60
80
100
0
120
− The room thermostat or timer setting is changed;
− Make sure that all the pumps in the system are free and
rotate in the right direction;
− Turn the mains power switch OFF and make sure that the
boiler shuts down completely.
