Checking Nozzle Pressure - Viessmann Vitogas 100 Service Instructions Manual

Further details regarding the individual steps

Checking nozzle pressure

B
C
A
Initial start−up, inspection and maintenance
1. Close the gas shut−off valve.
2. Release the screw inside test
nipple A, but do not remove
completely, and connect the
pressure gauge.
3. Open the gas shut−off valve.
Start up the boiler.
4. Check the nozzle pressure.
In case of deviation from the
value in the table on page 10,
remove protective cap B.
Adjust the nozzle pressure
with screw C.
5. Check setting values and record
in the service report.
6. Fit cap B.
7. Switch OFF the system at the
control unit (the boiler shuts
down), close the gas shut−off
valve, remove the pressure
gauge and close test nipple A
with the screw.
8. ¨ Safety instructions
Open the gas shut−off valve,
start up the boiler and check
soundness of test nipple A.
(cont.)
9