50
Display
Action
Automatic calibration of the combustion
controller
No
Fault E3
Ensure adequate
heat transfer. Press
reset button
R
.
Fault Eb
Check gap between
ionisation electrode
and burner gauze
assembly.
Check allocation of
gas type (coding ad-
dress 82, gas train
setting).
Check flue system;
remove flue gas re-
circulation if re-
quired.
Press reset button
R
.
For further details regarding faults, see page 91.
Checking the balanced flue system for tightness (annular gap check)
A
Fig. 34
A
Combustion air aperture (ventilation air)
For balanced flue systems tested together with the
heat source, there is no requirement for a tightness
test (overpressure test) during commissioning by the
flue gas inspector.
In this case, we recommend that your heating contrac-
tor carries out a simple tightness test during the com-
missioning of your system. For this it would be suffi-
cient to check the CO
2
or O
2
concentration in the com-
bustion air at the annular gap of the balanced flue
pipe.
If the CO
2
concentration is less than 0.2 % or the O
2
concentration is greater than 20.6 %, the flue pipe is
deemed to be sufficiently gas tight.
If actual CO
2
values are higher or actual O
2
values are
lower, a pressure test with a static pressure of 200 Pa
will need to be carried out on the flue pipe.
Commissioning, inspection, maintenance
Function sequence and possible faults
(cont.)
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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