Viessmann Vitotronic 200 Installation And Service Instructions For Contractors page 47

Testing the high limit safety cut-out
2. – release.
3. Wait until the boiler water temperature has dropped
approx. 15 to 20 K below the selected safety tem-
perature.
Checking outputs (actuator test)
Tap the following buttons:
1.
2. "Service"
3. Enter "viservice" password.
Display
All actuators
Burner
Burner stage 1
Burner stage 2
Burner modulation
Output 20
Output 29
Output 52
Heating circuit pump for HC 2
Mixer heating circuit 2
Heating circuit pump for HC 3
Mixer heating circuit 3
Cylinder primary pump
DHW circulation pump
Central fault message
Solar circuit pump
Solar circuit pump min.
Solar circuit pump max.
SM1 output 22
EA1 extension, output 1
(cont.)
4. Reset the high limit safety cut-out by pressing the
reset button.
4. "Actuator test"
Note
The actuators listed in the table can be tested at the
relay outputs, subject to system equipment level and
control unit configuration.
Explanation
OFF All actuators are off.
ON Burner ON
ON Burner stage 1 switches on.
ON Burner stages 1 and 2 switch on.
OPEN Modulating burner opens.
Neutral Modulating burner neutral.
CLOSE Modulating burner closes.
ON Actuator at output
ON Actuator at output
OPEN Actuator at output
Neutral
CLOSE
ON
Actuator at output
OPEN Actuator at output
CLOSE
ON
Actuator at output
OPEN Actuator at output
CLOSE
ON
Actuator at output
ON Actuator at output
ON Central fault message facility at output
ON Solar circuit pump at output
type SM1
ON
Connection at output
type SM1: Solar circuit pump running at minimum
speed
ON
Connection at output
type SM1: Solar circuit pump running at maximum
speed
ON
Actuator at output
ON Contact "P - S" on plug
Commissioning
A1
sÖ
sL
gS A1
sÖ M2
M2
gS
sÖ M3
M3
gS
sA
sK
gÖ
sF at solar control module,
sF at solar control module,
sF at solar control module,
sS at solar control module type SM1
of EA1 extension closed
aBJ
47