Viessmann Vitotronic 200 Installation And Service Instructions Manual page 43

Checking outputs (actuators) and sensors
The following relay outputs can be controlled subject to system design:
Display screen
Burner stage 1 ON
Burner stage 1 + 2 ON
or
Burner mod., close, ntr. or open
Output 20 ON
Output 29 ON
Output 52 open, ntr. or close
Cylinder pump ON
DHW circ. pump ON
Central fault ON
Checking sensors
Press the following keys:
1. c Scanning operating condi-
tions is enabled (see
page 53).
Adjusting the heating curves
The heating curves illustrate the relationship between the outside temperature
and the boiler water or flow temperature.
To put it simply: The lower the outside temperature, the higher the boiler water
or flow temperature.
The room temperature again depends on the boiler water or flow temperature.
Settings in the delivered condition:
Slope = 1.4
Level = 0
(cont.)
Explanation
Subject to the setting of coding ad-
dress "02"
DHW circulation pump
Central fault message
2. a/b Scanning actual tempera-
tures.
3. d Scanning is completed.
Commissioning
43