Viessmann VITODENS 111-W Installation And Service Instructions Manual page 69

Functions and operating conditions in...
The heating circuit pump is switched ON and the 3-
way diverter valve is changed over, if the cylinder tem-
perature sensor captures a temperature lower than the
defaulted set value.
■ The cylinder loading pump is switched ON if the
boiler water temperature
The burner is switched ON if the boiler water temper-
■
ature set cylinder temperature, and the cylinder
≤
loading pump is switched ON when the required
boiler water temperature is reached.
DHW is regulated to the set temperature via the outlet
temperature sensor.
After the draw off process has ended the loading cylin-
der continues to be heated up, until the set DHW tem-
perature has been reached at the cylinder temperature
sensor.
The cylinder loading pump and the 3-way diverter
valve remain ON for a further 30 s.
set cylinder temperature.
≥
(cont.)
Control unit
69