Viessmann VITODENS 200-W Technical Manual page 42

Design information
It is advisable to contact your local authority responsible for waste
water management prior to installation, to find out about local regula-
tions.
Condensate from gas combustion equipment up to 200 kW com-
bustion output
Up to a rated heating output of 200 kW, the condensate from a gas
condensing boiler can generally be introduced into the public sewage
system without prior neutralisation.
Also ensure that your domestic drainage systems are made from
materials that are resistant to acidic condensate.
According to Code of Practice DWA-A 251, these materials include:
■ Clay pipes
■ Hard PVC pipes
■ PVC pipes
■ PE HD pipes
■ PP pipes
■ ABS/ASA pipes
■ Stainless steel pipes
■ Borosilicate pipes
Neutralising system
4
B
A Condensate drain
B Neutralising system
C Ventilation via the roof
Neutralising system for single boiler systems from 80 kW and multi boiler systems
Part no. 7441 823
A Inlet (DN 20)
B Outlet (DN 20)
C Overflow aperture
VIESMANN
42
(cont.)
C
A
410
421
The Vitodens can (if required) be supplied with a separate neutralising
system (accessory). Any condensate is piped to and processed in the
neutralising system.
The condensate drain pipe to the sewer connection must be accessible
for inspection. Install it with a fall and a stench trap on the sewer side,
and provide a suitable facility for extracting samples.
Install a condensate lifting pump if the Vitodens has been installed
below the waste water anti-flooding level.
Condensate lifting pumps are available as accessories (see the Vitoset
pricelist).
Since the consumption of neutralising granulate depends on the oper-
ating mode of the system, determine the required top-up volume during
the first year of operation by regular checks. It is feasible that one fill
may last longer than one year.
Neutralising system for single boiler systems with 45 and 60 kW
Part no. 9535 742
400
A B C
70
230
DN 40
VITODENS 200-W