Checking The Nozzle Pressure - Viessmann Vitopend 100-W Installation And Service Instructions Manual

Further details regarding the individual steps
Supply pressure (flow pressure)
For natural gas H
Below 17 mbar
17 to 25 mbar
Above 25 mbar

Checking the nozzle pressure

Note
When operating with natural gas E+, the
factory settings must not be altered.
Only check the nozzle pressure at the
lower and upper rated heating output
(with cap B on).
The values given in the following tables
are control values for adjusting the max.
heating output (see page 20).
For LPG P
Below 25 mbar
25 to 45 mbar
Above 45 mbar
Commissioning, inspection, maintenance
(cont.)
Action
Do not start the boiler. Notify your gas
supply utility or LPG supplier.
Start the boiler.
Install a separate gas pressure governor
upstream of the system and regulate the
pre-charge pressure to 20 mbar for natu-
ral gas or 37 mbar for LPG. Notify your
gas supply utility or LPG supplier.
17