Removing The Flow Sensor - Viessmann Vitovalor PT2 Installation And Service Instructions For Contractors

Repairs
(cont.)
A
Fig. 96
1. Shut off and drain the boiler on the heating water
and DHW sides. See page 137.
2. Undo 2 screws . Pull plate heat exchanger
A
the side and remove from the top.

Removing the flow sensor

1.
3.
Fig. 97
B
C
3. Check the connections on the heating water and
to
B
4. Install in reverse order using new gaskets.
1.
2.
DHW sides for contamination and scaling; replace
the plate heat exchanger if necessary.
Troubleshooting
143