Viessmann Vitodens 200-W WB2B Series Installation Instructions Manual page 6

Table of Contents
General Information
Direct Venting
(Two-pipe System)
Single Pipe Venting
(Room Air Dependent)
Additional Information
6
Vitodens Rigid and Flex Venting Systems Installation
General Flexible Pipe Installation..................................74
Exhaust vent installation steps.................................74
Recommended venting practice...............................75
Ceiling / roof opening..............................................75
Approved materials for two-pipe system...................76
Exhaust Vent Requirements........................................77
Vent system suppliers.............................................77
Combustion Air Supply...............................................78
Starter Adaptor.........................................................79
Parallel Adaptor........................................................80
Vent Requirements-Flex Vent System/Connector Pipes....81
Additional requirements for UL/ULC-listed flexible
vent system / connector pipe vent material...............81
Exhaust vent/air intake connection to boiler..............81
Side Wall Air Intake Termination.................................82
Vent Length Requirements.........................................83
Maximum exhaust vent pipe length vertical and
air intake pipe length vertical...................................83
Maximum exhaust vent pipe length vertical and
air intake pipe length horizontal...............................84
Standard long sweep elbows (for CPVC / PVC / ABS
pipes air intake use only)........................................85
Combustion Air Supply...............................................86
Adaptors.................................................................88
Vent Length Requirements.........................................88
Maximum vent pipe length - vertical.........................88
Component Installation Guide.....................................89
Single pipe vent pipe starter adaptor installation
(if required)...........................................................89
General Component Parts of the Flex Venting System...90
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