Action In The Event Of Boiler Overheating - Viessmann VITOLIGNO 300-C Operating Instructions Manual

Vitoligno 300-C Operating

Action in the Event of Boiler Overheating

The high limit safety cut-out protects your boiler from
overheating.
Note: Never make adjustments at the high limit safety
cutout, which would result in an exclusion of
liability. Replace faulty components only with
genuine spare parts from Viessmann.
Note: Notify your heating contractor if the boiler
overheats again after a short time or overheats
regularly.
Boiler water temperature has reached 230°F (110°C)
High limit safety cut-out
The reset button of the high limit safety cut-out is located
behind cover A of the programming unit.
Note: Any high limit safety cut-out response requires a
manual reset.
Triggering the function:
The high limit safety cut-out will respond if the boiler
water temperature exceeds 230°F (110°C).
Resetting the fixed high limit
Note: The high limit safety cut-out can only be reset
once the boiler water temperature has reached
approx. 140°F (60°C).
1. Slide cover A on the programming unit to the right.
2. Press the green button on the high limit safety cutout.
A quiet "click" will be audible. The high limit safety
cut-out has been reset.
3. Close the programming unit cover.
4. Acknowledge the excess temperature on the
programming unit of the control unit with d.
Boiler
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