Viessmann VITOLIGNO 300-C Installation And Service Instructions Manual page 137

Lambda probe
(cont.)
7. Press / to select "Calibrate O2 probe".
| ~
Confirm with d .
8. Press / to select "Yes".
| ~
Confirm with .
d
Note
Probe is calibrated correctly if 21 % O
played.
Connection
The Lambda probe is connected at slot
chapter "Connection and wiring diagram" from
page 184.
Extension kit for heating circuit with mixer
■ Mixer mounting: Part no. 7301063
Wall mounting: Part no. 7301062
■
Flow temperature sensor
■ Sensor type: NTC 10 k
Ω
■ Protection rating: IP 53 to EN 60529, ensure through
design/installation.
Permissible ambient temperature:
■
In operation: 0 to +120 °C
–
– During storage and transport: -20 to +70 °C
Mixer motor
Part no. 7450657
Checking the rotational direction
The control unit "Actuator test" moves the mixer to
"Open" and "Close".
Note the rotational direction of the mixer motor during
the actuator test.
is dis-
2
. See
a:L
at 25 °C
9. Wear safety gloves.
Components:
Mixer motor, with connecting cable
■
Plug for connecting the heating circuit pump
■
Flow temperature sensor (contact temperature sen-
■
sor)
Curve
20
10
8
6
4
2
1
0.8
0.6
0.4
10 30 50 70 90 110
Temperature in °C
Fig. 84
Note
The flow temperature sensor must now display a
higher temperature. If the temperature drops, either
the motor is turning in the wrong direction or the mixer
insert is incorrectly fitted.
Mixer motor installation instructions
Maintenance
137