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Condensate Connection/Neutralization Unit
Condensate Connection
Install the condensate drain pipe with a
suitable gradient.
Discharge condensate from the boiler into
the drainage system, either directly or (if
required) via a neutralization unit
(accessory).
Condensate Connection for Vitodens 200
H up to model WB2 8-32
Condensate Drainage and Condensate Neutralization
The condensate formed both in the
condensing boiler and in the flue gas pipe
must be discharged into the public sewage
system in accordance with all applicable
local regulations.
The condensate produced by a gas-fired
heating system has a pH value between 3
and 4.
Some local codes may require the use of a
separate neutralization unit to treat the
aggressive and corrosive nature of the
condensate.
With a neutralization unit installed, all
condensate from the boiler and the flue gas
pipe enters into the neutralization unit
where it is treated and released into the
public sewage system with a safe pH value
of above 6.5.
The use of neutralization granulate
(performing the neutralizing process) is
dependent on the operation of the heating
system. To determine the required refill
amount, check granulate level several times
during the first year of operation. In some
cases one granulate fill may last an entire
year.
Contact Viessmann to order a neutralization
unit for the Vitodens 200 boiler.
See Viessmann Price List for order
information.
16
IMPORTANT
Pipe ventilation must take place between
the siphon trap and the neutralization unit (if
applicable).
H model WB2 11-44 and up
The condensate discharge outlet to the
drainage system connection must be clearly
visible. It must be installed with a suitable
gradient and provided with a stench trap.
If the condensate outlet of the Vitodens
200 boiler is lower than the drain, a
condensate pump must be used.
Only corrosion-resistant materials must be
used for condensate drainage purposes (e.g.
braided hose). Do not use galvanized
materials or materials containing copper for
piping, couplings etc.
The condensate drain must have a trap to
prevent flue gas leakage.
Please note that other requirements might
apply depending on local regulations and/or
project-specific details.
It is advisable to contact your local
waterworks office (authority responsible for
waste water regulations) well before
commencing with the installation of the
neutralization unit in order to establish
details of local regulations that apply.
The following table shows the concentration
of (effluent) substances (e.g. heavy metals)
contained in the waste water from the
Vitodens 200 condensing boiler.
Values measured
Condensate
(effluent)
(effluent)
in mg/ltr
substances
Vitodens 200
Lead
Cadmium
Chromium
Copper
Nickel
Zinc
Tin
< 0.01
< 0.005
< 0.01
< 0.01
< 0.01
< 0.05
< 0.05
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