Viessmann VITODENs 200 Installation Instructions Manual page 107

Repairs
(cont.)
8. Release screws G and pull plate
heat exchanger H forward.
Note
During removal, small amounts of
water may trickle out and escape
from the removed plate heat
exchanger.
9. Check the secondary side for
scaling and, if necessary, clean or
replace the plate heat exchanger.
10. Check the primary side for con-
tamination and, if necessary,
clean or replace the plate heat
exchanger.
11. Install in reverse order using new
gaskets. Lubricate the new gas-
kets/seals.
12. Danger
Escaping gas leads to a
risk of explosion.
Check the gas connections
for soundness.
Check all fittings and the flange
for soundness.
Troubleshooting
91