7
for the technician and f
or the user
Introduction
To be much more synthetic in realizing the system, we have noticed that the condense (acid
condense), combined with the domestic flowing backs (basic liquids) tends to neutralize the pH
of the domestic evacuations, giving them a “better” impact on the environment or in any case
provoking a negligible effect because of the dilution. The normal domestic outlet is sufficient to
optimise this equilibrium without any chemical treatments are required (the detergent wa-
ters , which are wasted washing the dishes after a bath/shower etc.)
Only if the boiler is used where the production of flowing backs (basic liquids) is not sufficient
(i.e. office rooms with less then 10 persons), an installation of a condense neutralisator is
required (that is a device which neutralize the pH of the condenses, raising it up). These devices
need periodical maintenance to be executed following their producer’s instructions.
THE FLUE OUTLET
Also the flue outlet of the condensing boilers, is ruled by dedicated laws (i.e. the UNI 11071). Since
the acid condense tends to form itself also inside the flue components, these should be suitable to
reach the purpose. It is mandatory and necessary to use original flue components, espe-
cially designed for EURA Condensing and properly signed, to realize the outlet duct, be-
cause they are integral part of the same component. See “Chimney connections” for further
details about it.
Without being much more detailed, the outlet duct must have an upwards slope (relatively to the
direction of the flues) so as to take the condense towards the boiler (despite of the traditional
sealed combustion chamber boilers and forced draught boilers, the condensing boiler is projected
to work in “wet” conditions) and however must not have stagnation points and traces where it can
freeze. In case where the condense stagnation is unavoidable, this must be drained by the proper
mechanism to be connected to the expelling condense system produced by the boiler and which
prevents the flues passage. Like the normal sealed combustion chamber boilers, it is always
mandatory to use the upwards slope for the horizontal tracts of the aspiration duct, in case
of separated outlets (concerning the direction of the inlet air flow), so as to avoid water raining
inlet in the combustion chamber of the boiler.
