Flue Gas Connection - Viessmann VITODENS 200-W B2HE 85 Installation Instructions Manual

Boiler Connections

Flue Gas Connection

WARNING
Leaking or blocked flue systems, or an inadequate
supply of combustion air can cause life threatening
poisoning from carbon monoxide in the flue gas.
Ensure the flue system is in good working order.
Vents for supplying combustion air must be nonclosable.
Prevent condensate drainage via a wind protector.
Legend
A Combustion air
B Flue gas
Coaxial
26
Vitodens 200-W B2HE 85, 120, 150, 199 Installation
Refer to the Vitodens Venting System
installation instructions
Only carry out commissioning when the following
conditions have been met:
Unrestricted flow in the flue gas routes.

Positive pressure flue system is gas-tight.

Inspection port covers checked for secure and tight

seating.
Apertures for supplying sufficient combustion air are

open and cannot be closed.
All current regulations on installing and commissioning

flue systems have been observed.
1. Do not damage the sealing lip on the outside ring
of the sealing plug. Carefully detach the inner part
of the sealing plug, preferably without using a tool.
2. Note: If the boiler is direct vent with a two pipe
system, the coaxial vent seal must be fitted!
For direct vent applications the combustion air gaskets
position can be interchanged.
One gasket is sized for a 3b in. (89 mm) (for CPVC/PVC/
ABS) outside diameter combustion air pipe, the other is
sized for a 3d in. (80 mm) (for PPs) outside diameter
combustion air pipe.
CAUTION
Under certain climatic conditions some building materials
may be affected by flue products expelled in close
proximity to unprotected surfaces. Sealing or shielding
of the exposed surfaces with a corrosion resistant
material (e.g. aluminum sheeting) may be required to
prevent staining or deterioration. The protective material
should be attached and sealed (if necessary) to the
building before attaching the vent termination. It is
strongly recommended to install the vent termination
on the leeward side of the building.
Direct Vent
Room Air Dependant