Checking The Vitotronic 200-H (Accessories) - Viessmann Vitocrossal 100 Series Service Instructions For Contractors

Maintenance
Mixer extension kit
Changing the rotational direction of the mixer motor (if required)
gS
|
BU
~
Fig. 40
Check flow temperature sensor
20
10
8
6
4
2
1
0.8
0.6
0.4
10 30 50
Temperature in °C
Fig. 41 Sensor type: NTC 10 k

Checking the Vitotronic 200-H (accessories)

The Vitotronic 200-H is connected to the control unit
via the LON cable. To test the connection, carry out a
subscriber check at the boiler control unit (see from
page 29).
82
(cont.)
70 90 110
Ω
1. Remove the upper casing cover of the extension
kit.
Danger
An electric shock can be life-threatening.
Before opening the boiler, disconnect it from
the mains voltage, e.g. at the fuse or mains
isolator.
2. At plug , swap the cores at terminals "
gS
" ".
~
3. Refit the casing cover.
1. Disconnect plug (flow temperature sensor).
?
2. Check the sensor resistance and compare it to the
curve.
In the event of severe deviation replace the sensor.
" and
|