Viessmann VITODENS 100-W Installation And Service Instructions Manual page 13

Fitting the boiler and making connections
Filling the condensate connection siphon with water
Balanced flue connection
A
B
A Flue gas
B Ventilation air
Installation sequence
(cont.)
!
Please note
At commissioning, flue gas may
be emitted from the condensate
drain.
Therefore fill the siphon with
water before commissioning.
Pour a minimum of 0.3 l of water into the
flue outlet.
Connect the balanced flue.
During installation and positioning of the
flue system, observe building regula-
tions Part L and BS 5440.
Flue system installation instruc-
tions.
13