Technical data

Set-up
10
Before Set-up
Before placing boiler in its installation
location, ensure all necessary
accessories are installed.
Minimum Clearances
Recommended minimum service clearances
For typical Vitodens installations, Viessmann
recommends installing the boiler with the clearances
shown in the illustration on the left.
Note:
The 12” (305 mm) side clearance specified is only
recommended to be able to view the boiler certified
rating plate, decal and also accomodate the PRV
installation kit.
If the pressure relief valve is rotated 90º facing
forward by using an extension between the tee and
the boiler connection, then this clearance can be
reduced to b”. This b” clearance is only required to
be able to remove the boiler’s front cover and view
the rating plate attached to it, if needed.
This reduced clearance is also used in Vitodens
multiple boiler installation system as described in
the multiple boiler installation instructions.
The Vitodens 200-W, WB2B boiler is approved for
closet and alcove installation with the following
clearances to combustibles.
Table 1. Clearances
Top Front Rear Left Right Vent pipe
0 0 AL, CL 0 0 0 0
AL = Alcove
CL = Closet
See the Vitodens 200-W WB2B Venting
System Installation Instructions for details.
5369 297 v1.6
The boiler must be installed in such
a way that gas ignition system
components are protected from
water (spraying, splashing, etc.)
during boiler operation and service.
CAUTION
Front
12”/305 mm
12”/305 mm
0”/mm
28”/700 mm
Side
0”/mm
Back
Side
Fig. 2 Recommended min. service clearances
Top
Note:
The Vitodens 200-W, WB2B boiler has passed the zero inches
vent clearance to combustibles testing requirements dictated by
the boiler Harmonized Standard ANSI Z21.13. CSA 4.9.2007
and therefore is listed for zero clearance to combustibles when
vented with a single-wall special venting system (AL-29-4C
material) or UL/ULC-listed CPVC gas vent material. The zero
inches vent clearance to combustibles for the Vitodens 200-W,
WB2B boiler supercedes the clearance to combustibles listing
that appears on the special venting system label.