Viessmann Vitodens 200-W Installation Instructions Manual page 141

Maintenance
(cont.)
Extension kit, mixer
Checking the setting of rotary selec-
tor S1
The rotary selector on the PCB of the
extension kit defines the assignment to
the relevant heating circuit.
Heating circuit
Heating circuit with mix-
er M2
(Heating circuit 2)
Heating circuit with mix-
er M3
(Heating circuit 3)
Checking the rotational direction of
the mixer motor
After being switched on, the boiler imple-
ments a self-test. During this, the mixer
is opened and closed again.
Changing the rotational direction of the mixer motor (if required)
gS
|
BU
~
Note
The mixer motor can also be started via
the actuator test (see chapter "Checking
outputs").
Note the rotational direction of the mixer
motor during its self-test.
Then set the mixer manually to "Open"
Rotary se-
again.
lector S1 set-
ting
Note
2
The flow temperature sensor must now
capture a higher temperature. If the tem-
perature drops, either the motor is turn-
4
ing in the wrong direction or the mixer
insert is incorrectly fitted.
1. Remove the upper casing cover of
2. At plug gS, swap the cores at termi-
Mixer installation instructions
the extension kit.
Danger
An electric shock can be life-
threatening.
Before opening the boiler, dis-
connect from the mains volt-
age, e.g. at the fuse or the
mains isolator.
nals "|" and "~".
Troubleshooting
141