Installation Examples - Viessmann VITODENS 100-W WB1B Series Installation And Service Instructions Manual

Boiler Connections

Installation Examples

26
General
The schematics on the following
pages are to be seen as guidelines
only. They further do not display all
system varieties, safety devices, or
concepts possible. Specific system
layouts may be further discussed
with the local Viessmann sales
representative office.
Clearances
A minimum of 2" / 51 mm
circumferential clearance from
non-insulated hot water pipes to
combustible construction must be
maintained. In cases where the pipes
are insulated with pipe insulation of
appropriate and sufficient thickness
and insulation values, the above
clearance may be reduced to 0" (refer
to local gas codes).
CAUTION
For underfloor heating applications,
an additional immersion or strap-on
aquastat must be installed in the
low temperature underfloor loop
(downstream of the mixing valve) to
de-energize the pump and/or boiler
to prevent overheating. High water
temperatures can damage concrete
slabs.