Viessmann Vitopend 100-W Installation And Service Instructions Manual page 79

Repairs
(cont.)
3.
1.
A Screws
Check the connections on the DHW
side for scale build-up and the connec-
tions on the heating water side for con-
tamination. Clean or replace the plate
heat exchanger if required.
4.
A
Note
Use new gaskets when assembling.
Troubleshooting
2.
79