Concentration - Vaillant ecoTEC exclusive 832 Installation And Maintenance Instructions Manual

> Carry out a functional check of the boiler
(see Section 6).
> Always check earth continuity, polarity and resistance
to earth with a multimeter after any service work and
after replacing any electrical component.
Installation and maintenance instructions ecoTEC exclusive 0020017768_07
Inspection and maintenance
8.1.3 Checking the CO
i
Checking/adjustment of the CO
tion is required in the following instances:
- replacement of gas valve,
- conversion to or from Natural Gas/LPG
- or if an incorrect combustion is suspected.
4
Fig. 8.1 Measuring the CO
ratio (gas setting)
Legend:
1 Flue gas analysis point
2 Screw
3 Air intake pipe
4 Main throttle
i
The boiler is fitted with a flue gas analysis
point (1). A suitable flue gas analyser can be
connected to this point to establish the com-
bustion performance of the boiler.
> Remove the front casing.
> Start the testing program P.1.
> Wait at least 5 minutes until the boiler reaches its
operating temperature.
> Measure the CO
concentration at the flue gas analy-
2
sis point (1). Compare the measured value with the
corresponding value in Table 8.1.
> If all these points are as required, proceed as
described in Section 8.1.5.
> If one of the flue gas values is greater than the
acceptable values in Table 8.1, then proceed as
described in the following Section 8.1.4.

concentration

2
concentra-
2
concentration, specifying the air
2
8
1
2
3
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