Viessmann VITODENS 100-W Installation And Service Instructions Manual page 49

Repairs
(cont.)
20
10
8
6
4
2
1
0.8
0.6
0.4
10 30 50 70 90 110
Temperature in °C
Replacing flow limiter (gas condensing combi boiler)
A
B
C
Serial no.
(Type plate)
7441748
7441749
3. Replace the sensor in the case of
severe deviation.
1. Drain the boiler from the DHW side.
2. Pivot the control unit downwards.
3. Undo screws A.
4. Remove the cap B.
5. Remove faulty flow limiter C.
6. Select new flow limiter C corre-
sponding to boiler serial no. (see type
plate) and the following table.
7. Insert new flow limiter C.
8. Fit new cap B provided.
Flow rate
l/min
Troubleshooting
Colour
12
14 brown
red
49