Viessmann Vitoradial 300-T Service Instructions Manual page 17

Commissioning, inspection, maintenance
Checking the heat exchanger gasket
(cont.)
Removing the top panels
Fig. 6
Removing the back panel
3,9 x 9,5
A
Fig. 7
Back panel
A
Removing the heat exchanger cover
Fig. 8
1. Cut fabric lining
A around the return pipe.
17