Viessmann B2HA 80 - Set-Up; Before Set-Up; Minimum Clearances; Recommended Minimum Service Clearances

Vitodens 200-W B2HA 80 to 100, 285 to 352 Installation
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Before Set-up
Set-up
Note: The Vitodens 200-W, B2HA boiler has passed the
zero inches vent clearance to combustibles testing
requirements dictated by the boiler Harmonized
Standard ANSI Z21.13. CSA 4.9 (latest edition)
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/PPs gas vent material. The zero
inches vent clearance to combustibles for the
Vitodens 200-W, B2HA boiler supercedes the
clearance to combustibles listing that appears on
the special venting system label.
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 in. (305 mm) side clearance specified is
only recommended to be able to view the boiler
certified rating plate, decal and also accommodate
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 in.
This b in. 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, B2HA boiler is approved for closet
and alcove installation with the following clearances to
combustibles.
AL = Alcove
CL = Closet
Before placing boiler in its installation location, ensure all
necessary accessories are installed.
Minimum Clearances
CAUTION
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.
Table 1 Clearances
Top Front Rear Left Right Vent pipe
00 AL CL0000
See the Vitodens 200-W B2HA Venting
System Installation Instructions for details.