Checking The Static Pressure And Supply Pressure - Viessmann VITODENS 200-W Installation And Service Instructions Manual

Commissioning, inspection, maintenance

Checking the static pressure and supply pressure

Danger
CO formation as a result of incorrect burner
adjustment can have serious health implications.
Check the CO content before and after carrying
out work on gas appliances.
Fig. 24
32
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Operation with LPG
Purge the LPG tank twice on commissioning or
replacement. Vent the tank and gas connection line
thoroughly after purging.
1. Close the gas shut-off valve.
2. Release screw inside test connector "PE" on
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the gas train, but do not remove it. Connect the
pressure gauge.
3. Open the gas shut-off valve.
4. Check the static pressure and record the actual
value in the report on page 119.
Set value: max. 57.5 mbar (5.75 kPa).
5. Start the boiler.
Note
During commissioning, the appliance can enter a
fault state because of airlocks in the gas line. After
approx. 5 s, press R to reset the burner.
6. Check the supply (flow) pressure. Set values:
Natural gas 20 mbar (2 kPa)
■
■ LPG 50 mbar (5 kPa)
Note
Use a suitable measuring device with a resolution
of at least 0.1 mbar (0.01 kPa) to check the supply
pressure.
7. Record the actual value in the report.
Implement measures as indicated in the table
below.
8. Shut down the boiler. Close the gas shut-off valve
and remove the pressure gauge.
Close test connector
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9. Danger
Gas escaping from the test connector leads
to a risk of explosion.
Check for gas tightness.
Open the gas shut-off valve. Start the boiler and
check for gas tightness at test connector
with the screw.
.
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