Viessmann Vitodens 100-W WB1B Series Installation Instructions Manual page 23

Flexible Venting Installation
Combustion Air Supply
(continued)
Inspect all finished exhaust vent/air intake piping to ensure:




The exhaust vent system and terminations may be
installed in the vertical exhaust vent type of termination.
*
Note: If above criteria are not properly observed and boiler
Single Pipe Venting (Room Air Dependent)
Vent pipe and fittings are of approved material.
Acceptable size, length and number of elbows on
combined vent pipe system.
Installation is in accordance with prevailing provisions
of local codes.
Installation complies with the requirements of these
instructions, as well as the exhaust vent supplier's
instructions.
CAUTION
Exposure to corrosive materials can cause heat
exchanger corrosion and failure.
CAUTION
Do not locate boiler in areas where high dust levels or
high humidity levels are present.
CAUTION*
Do not install boiler during construction involving drywall
or heavy dust of any kind. Dust can accumulate in the
burners and cause sooting. Install boiler after all heavy
dust construction is completed.
Typically when the boiler is used as a temporary heat
source during the building construction phase.
CAUTION
If the boiler has been exposed to high dust levels, all burners
and the heat exchanger must be cleaned prior to use.
damage results, any warranty on the complete boiler
and related components will be null and void.
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