19
High limit safety cut-out
Fig. 12
Reset button
A
of the high limit safety cut-out is loca-
ted on the front of the boiler.
Triggering the function
If the boiler water temperature exceeds
95 °C
the high
limit safety cut-out responds.
Note
The high limit safety cut-out can only be reset man-
ually.
Cancelling the function
Note
The high limit safety cut-out can only be reset
(unlocked) once the boiler water temperature has
reached approx. 70 °C.
After each triggering of the high limit safety cut-out,
check that the thermally activated safety valve is reset.
1.
Unscrew protective cap
A
.
2.
Press the green button on the high limit safety cut-
out.
A faint "click" will be audible, the high limit safety
cut-out is reset.
3.
Acknowledge the excess temperature on the pro-
gramming unit of the control unit with
d
.
4.
Refit protective cap
A
over the green button.
Start-up/shutdown
Steps to take in the event of overheating
(cont.)
5684 987 GB
Summary of Contents for Vitoligno 250-S
Page 55: ...55 5684 987 GB...
