Checking the CO
2
settings
Vitodens 333 is set up in the factory for natural gas E, and can be converted to
natural gas LL or LPG P using a conversion kit.
During commissioning or maintenance, check the CO
2
level at the boiler adap-
tor.
Note
The MatriX burner for Vitodens 333 is preset for the entire gas group. Therefore,
the burner requires no further setting or adjustment.
Subject to the Wobbe index, the CO
2
content fluctuates between
&
6.6 to 10.0 % for natural gas E
&
7.0 to 10.0 % for natural gas LL and
&
8.5 to 10.5 % for LPG P.
Compare the actual CO
2
value with the above CO
2
value ranges for the indivi-
dual gas groups (check the gas group with your mains gas or LPG supplier).
If the actual CO
2
value deviates by more than 1 % for natural gas or 0.5 % for
LPG, proceed as follows:
&
Check whether the correct gas restrictor has been installed.
&
Check the balanced flue system for soundness, see page 18.
Further details regarding the individual steps
(cont.)
15
Initial start-up, inspection, maintenance
56
92
548
GB
Summary of Contents for VITODENS 333
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