Condensate Connection - Viessmann VITODENS 200-W Installation Instructions Manual

Boiler Connections
Connections
(continued)

Condensate connection

The Vitodens 200-W WB2B boiler comes with a built-in condensate trap. An external trap is not required when connecting
the field drain to flexible discharge tubing. Discharge tubing (field supplied) must be of 1" diameter. Use CPVC, PVC or
other material approved by codes listed below.
The drain pipe and fittings must conform to ANSI standards and ASTM D1785 or D2846. CPVC or PVC cement and primer
must conform to ASTM D2564 or F493. In Canada use CSA or ULC listed schedule 40 CPVC or PVC drain pipe, fittings
and cement.
If the condensate outlet of the Vitodens 200-W WB2B boiler is lower than the drain, a condensate pump must be installed.
Select a pump which is approved for condensing boiler applications. To avoid condensate spillage, select a pump with an
overflow switch. The drain connection must terminate into an open or vented drain as close to the boiler as possible to
prevent siphoning of the boiler drain.
Fig. 20
Legend
Open or vented field supplied
drainage system
Flexible discharge tubing
Siphon trap
24
1. Install the condensate drain pipe
with a suitable gradient.
IMPORTANT
As shipped, the flexible discharge
tubing B will be found to be pushed
up inside the boiler housing. Ensure the
condensate drain pipe is pulled down
and positioned to allow the condensate
to properly drain.
2. Discharge condensate from the
boiler into the drainage system,
either directly or (if required) via a
neutralization unit (accessory).
Installation Instructions of
Neutralization Unit
(if applicable)
IMPORTANT
Pipe ventilation must take place
between the siphon trap and the
neutralization unit (if applicable).
IMPORTANT
Do not connect the drain pipe from any
other appliance, such as water softener
backwash pipe, to Vitodens
condensate drain pipe.