Burner Switching Hysteresis - Viessmann VITOTRONIC 100 Installation And Service Instructions Manual

Burner switching hysteresis

Switching hysteresis 4 K (04:0)
ON
OFF
+2
set
−2
low
heat demand
Heat−demand dependent switching hysteresis (only with outside temp. sensor)
ERB50 function (04:1)
Subject to heat demand, values between 6 and 12 K result.
ON
OFF
+9
+3
set
−3
low
heat demand
ERB80 function (04:2)
Subject to heat demand, values between 6 and 20 K result.
ON
OFF
+17
+3
set
−3
low
heat demand
The heat demand−dependent switching hysteresis, therefore, takes the boiler
load into account.
The switching hysteresis, i.e. the burner operating time, is varied subject to
the current heat demand.
average high
heat demand heat demand
average
high
heat demand
heat demand
average high
heat demand heat demand
Time
Time
Time
Coding
151