Checking The Nozzle Pressure, 18 Kw - Viessmann Vitopend 100-W Installation And Service Instructions Manual

Commissioning, inspection, maintenance
Further details regarding the individual steps
9. Open the gas shut-off valve and
start the appliance.
Supply pressure (flow
pressure)
Below 15 mbar (1.5 kPa)
15 to 30 mbar
(1.5 - 3.0 kPa)
Above 30 mbar (3.0 kPa)

Checking the nozzle pressure, 18 kW

Gas combi boiler
B D C
A Test connector
B Cap
C Bolt
D Phillips screw
44
Measures
Do not commission the appliance, and notify the gas
supply utility.
Start the boiler.
Connect the separate gas pressure governor up-
stream of the system and set the pre-charge pressure
to 20 mbar (2.0 kPa). Notify the gas supply utility.
A
Danger
Gas escaping from the test
connector leads to a risk of
explosion.
Check the test connector for
gas tightness.
01. Turn off the ON/OFF switch on the
control unit (the boiler shuts down).
02. Close the gas shut-off valve.
03. Undo screw in test connector A,
but do not remove. Connect the
pressure gauge.
04. Open the gas shut-off valve. Turn
ON the system ON/OFF switch on
the control unit.
(cont.)