Viessmann Vitodens 100 Series Installation And Service Instructions Manual page 37

Further details regarding the individual steps
B
Commissioning, inspection, maintenance
05. Open shut-off valves A and B (if
C A
06. Fill the heating system:
D
(cont.)
fitted).
■ Gas condensing system boiler:
Via fill valve C in the connection
set (if supplied) or via on-site fill
valve.
■ Gas condensing combi boiler:
Via fill valve C in the connection
set (if supplied) or alternatively
via fill valve D on the underside
of the boiler.
Minimum system pressure
> 0.08 MPa.
Enter the measured value in the
enclosed "Guarantee card".
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