Operating instructions

We recommend that your heating engineer carries out a simple leak test during
the commissioni ng of your system. For this it would be su fficient to check the
CO
2 concentration in the combustion air at the annular gap of the balanced flue
pipe.
A Combustion air ape rture (ventila-
tion air)
Thefluepipeisdeemedtobesoundif
the CO
2 conce ntration in the com bus-
tion air is no highe r than 0.2 % or the
O
2 con centration is at lea st 20.6 %.
If actual CO
2 values are higher or O2
values are lo wer, then pressure check
the flue pipe a t a static pressur e of
200 Pa.
Further details regarding the individual steps (cont.)
16
Initial start-up, inspection, maintenance
5692 619 GB