Viessmann Vitodens 050-W Installation And Service Instructions Manual page 50

Troubleshooting
Repairs
(cont.)
Replacing the flow sensor
A
C
50
B
1. Drain the boiler from the DHW side.
2. Pull the leads off faulty flow sensor
A.
3. Pull off spring clip B.
4. Remove faulty flow sensor A.
5. Select a new flow limiter C from the
table on page.
6. Install new flow limiter C on new flow
sensor A.
7. Install new flow sensor A with new
gaskets. Attach leads.
8. Position spring clip B.