Viessmann Vitoflame 100 Service Instructions Manual page 11

Further details regarding the individual steps
A
Supply
pressure
(flow pressure)
Below 15 mbar
15 to 18 mbar
18 to 50 mbar
Above 50 mbar
B
Measure
Never change this setting; check the filter in the gas
combination valve and notify your gas supply company.
Please note: The boiler may only be temporarily operated
with this setting at stage 1 (emergency mode).
Check the filter in the gas combination valve.
Notify your gas supply company.
Start up the boiler.
Install a separate gas governor with zero off upstream of the
boiler and regulate the pressure to 20 mbar.
Notify your gas supply company.
Initial start−up, inspection and maintenance
Supply pressure
7. Start up the burner.
Note
Start up the burner at stage 2; for
this set the emissions test switch
at the control unit to ON. Service
switch B must be in position II.
8. Check the supply pressure (flow
pressure), see the following
table.
Note
The supply pressure (flow
pressure) should be between 20
and 25 mbar. The gas pressure
limiter is factory set to 12.5 mbar.
Never alter this setting.
9. Record the actual value in the
service report (see from page 47).
10. Close the gas shut−off valve.
11. Remove the U−shaped pressure
gauge and close test port A.
(cont.)
11