Viessmann Vitotronic 200 Installation And Service Instructions For Contractors page 48

Commissioning
Checking outputs (actuator test)
Display
AM1 extension, output 1
AM1 extension, output 2
Information regarding the mixer motor rotational
direction
■ Flow temperature control/heating circuit control unit:
The flow temperature must rise when the mixer
opens. If the temperature drops, the motor is turning
in the wrong direction or the mixer set is incorrectly
fitted (observe the mixer installation instructions).
Return temperature control:
■
The return temperature must rise when the mixer
opens. If the temperature drops, the motor is turning
in the wrong direction or the mixer set is incorrectly
fitted (observe the mixer installation instructions).
48
(cont.)
Explanation
ON Actuator at output A1
ON Actuator at output A2