Viessmann VITODENS 050-W Installation And Service Instructions Manual page 35

Further details regarding the individual steps
A
Magnified view shows gas solenoid valve from the back
1. Close the gas shut-off valve.
2. Undo screw A inside test connec-
tor "IN" on the gas train, but do not
remove it. Connect the pressure
gauge.
3. Open the gas shut-off valve.
4. Check the static pressure.
Set value: max. 57.5 mbar
(5.75 kPa)
Commissioning, inspection, maintenance
(cont.)
5. Start the boiler.
Note
During commissioning, the appli-
ance can enter a fault state
because of airlocks in the gas line.
After approx. 5 s, press Reset to
reset the burner (see page 59).
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