Seal Test On Coaxial Flue System (Annular Gap Check) - Viessmann B1KE Combi Series Installation And Service Instructions Manual

Vitodens 100-W, B1HE/B1KE Combi Installation/Service
Seal Test on Coaxial Flue System
Legend
A Combustion air aperture
(annular gap check)
For sealed combustion, coaxial vent only
Viessmann strongly recommends that the heating
contractor perform a simplified leak test during boiler
start-up. For this purpose it is sufficient to measure the
CO concentration of the combustion air in the coaxial
2
gap of the air intake pipe. The vent pipe is considered
sufficiently leak-proof if a CO
combustion air no higher than 0.2% or an O
no lower than 20.6% is measured.
If higher CO values or lower O
2
check venting system thoroughly.
Note: The vent pipe adaptor comes with two measurement
ports, one for combustion air intake measurement
and one for flue gas measurement.
Note: This test is not applicable for single-wall venting
systems (non-sealed combustion).
IMPORTANT
If the test port is not sealed, combustion air is drawn in
from the room. After the leak test, re-seal the test port
with the plug.
Commissioning
concentration in the
2
concentration
2
values are measured,
2
49