47
Danger
CO formation as a result of incorrect burner
adjustment can have serious health implications.
Always carry out a CO test before and after
work on gas appliances.
Operation with LPG
Purge the LPG tank twice on commissioning or
replacement. Vent the tank and gas connection line
thoroughly after purging.
A
Fig. 33
1.
Close the gas shut-off valve.
2.
Loosen the screw inside test connector "PE"
A
on
the gas train, but do not remove it; then 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 155.
Set value: max. 57.5 mbar (5.75 kPa).
5.
Commission the appliance.
Note
During commissioning, the boiler can enter a fault
state (fault EE is displayed) because of air in the
gas line. After approx. 5 s, press reset button
R
(see operating instructions) to reset the burner.
6.
Check the supply (flow) pressure.
Set value:
■
Natural gas: 20 mbar (2.0 kPa)
■
LPG: 50 mbar (5.0 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 on page 155.
Implement measures as indicated in the table
below.
8.
Shut down the appliance, close the gas shut-off
valve, remove the pressure gauge and tighten the
screw in test connector
A
.
9.
Open the gas shut-off valve and start the appli-
ance.
Danger
Gas escaping from the test connector leads
to a risk of explosion.
Check gas tightness at test connector
A
.
Note
Only use suitable and approved leak detection
agents (EN 14291) and devices for the tightness
test. Leak detection agents with unsuitable constit-
uents (e.g. nitrides, sulphides) can cause material
damage.
Remove leak detection agent residues after test-
ing.
Supply pressure (flow pressure)
Steps
For natural gas
For LPG
Below 17.0 mbar (1.7 kPa)
Below 25.0 mbar (2.5 kPa) Do not commission the boiler. Notify your gas supply
utility or LPG supplier.
17.0 to 30.0 mbar
(1.7 to 3.0 kPa)
25.0 to 57.5 mbar
(2.5 to 5.75 kPa)
Commission the appliance.
Above 30.0 mbar (3.0 kPa) Above 57.5 mbar
(5.75 kPa)
Connect a separate gas pressure governor upstream of
the system and regulate the pre-charge pressure to
20 mbar (2.0 kPa) for natural gas or 50 mbar (5.0 kPa)
for LPG. Notify your gas supply utility or LPG supplier.
Commissioning, inspection, maintenance
Testing the static and supply pressure
5678 044 GB
Summary of Contents for D2RA
Page 113: ...113 Maintenance Checking the Vitotronic 200 H accessories cont 5678 044 GB Maintenance ...
Page 133: ...133 Parts lists Sorption module hydraulics cont 5678 044 GB Components ...
Page 136: ...136 0001 0002 0003 0004 0005 Fig 83 Parts lists Miscellaneous 5678 044 GB Components ...
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