Viessmann VITOMAX 200-HS Operating And Service Instructions page 12

Operating information
Functions
(cont.)
Level monitoring water level "too high" (HW electrode qQ)
Level electrode to safeguard against maximum water levels
Function
Self-monitoring overfill protection
comprising
■ A level electrode
■ The associated evaluating device
Note
See also country-specific regulations.
12
Operating condi-
tion
Standard water
level
Water level too
high
The level drops
again
Operating informa-
tion
Electrode is not
immersed in the con-
ducting boiler water
and registers a high
resistance
Feedwater pump oper-
ation enabled
Feedwater pump runs
Boiler is filled continu-
ally and subject to load
Electrode is immersed
into the boiler water and
registers a low resist-
ance
The feedwater pump is
stopped via the pump
relay
Feedwater supply to
the boiler interrupted
Feedwater pump can
start subject to
demand