Cleaning The Primary Cylinder - Viessmann FB2A Installation And Service Instructions For Contractors

Further details regarding the individual steps

Cleaning the primary cylinder

Note
EN 806 specifies a visual inspection and (if required) cleaning every two years after
the cylinder has been taken into use and thereafter according to requirements.
A
1. Drain the primary cylinder.
2. Remove flange lid A.
3. Remove T&P valve B.
4. Undo eight screws C and remove
flange lid D.
Commissioning, inspection, maintenance
(cont.)
B
C D
5. Dispose of gasket E.
6. Disconnect the primary cylinder from
the pipework to prevent contamina-
tion from entering the pipe system.
E
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