Viessmann VITODENSd 100-W Technical Data Manual page 16

Installation
Condensate
Condensate Connection
Install the condensate drain pipe (Ø 7/8" / 22 mm) with
a suitable gradient (min. 2.5%).
Discharge condensate from the boiler into the drainage
system, either directly or (if required) via a neutralization
unit (accessory).
Condensate connection for Vitodens 100-W
model WB1B 26, 35
g
The condensate drain of the Vitodens 100-W boiler is
equipped with a built-in siphon trap in order to keep flue
gases from being discharged via the condensate drain.
IMPORTANT
Pipe ventilation must take place between the siphon trap
and the neutralization unit (if applicable).
16
A Discharge tubing
Vitodens 100-W, WB1B Technical Data
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
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 100-W boiler.
See Viessmann Price List for order information.
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 100-W boiler is
lower than the drain, a condensate pump must be used.
Only corrosion-resistant materials may 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.
Please note that other requirements may 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 100-W condensing boiler.
Condensate
(effluent) substances
Lead
Cadmium
Chromium
Copper
Nickel
Zinc
Tin
Values measured
in mg/L Vitodens 100
< 0.01
< 0.005
< 0.01
< 0.01
< 0.01
< 0.05
< 0.05