Installation Manual
61
5350 485 GB 08/2007
Flue system check
For balanced flue systems tested together
with the wall mounted gas fired boiler, we
recommend that a simple soundness test
is carried out during the commissioning.
For this, it would be sufficient to check the
CO2 or O2 concentration in the combustion
air at the annular gap of the balanced flue
pipe.
The flue pipe is deemed to be sound if
the CO2 concentration in the combustion
air is no higher than 0.2% or the O2
concentration is at least 20.6%. If actual
CO2 values are higher or O2 values are
lower, then pressure test the flue pipe
with a static pressure of 200 Pa.
The Vitodens 200-W is fitted with a
Lambda-Pro control. The electronic
combustion control unit automatically
ensures an optimum combustion. Therefore
during commissioning it is not required to
check or adjust the air/gas mixing ratio.
During the initial start up and during normal
operation the boiler will automatically
calibrate itself to the local gas quality.
This ensures a high operation safety and
constant high boiler efficiency.
If the boiler is not working correctly,
check the CO2 values are in-line with the
following ranges (maximum and minium
heat output).
Natural Gas: 7.7 to 9.2%
LPG: 9.3 to 10.9%
For all gas types the O2 (oxygen) content
must be between 4.4% and 6.9%.
Check the gas installation for soundness
Danger
Escaping gas leads to a risk of explosions.
Check gas equipment for soundness.
Checking the balanced flue system for soundness (annular gap check)
Flue gas emission test
Vitoden 200-W pages 44 - 4/9/07 7:56 pm Page 18