Viessmann Vitodens 100-W WB1B Series Installation Instructions Manual page 4

Table of Contents
Direct Venting (Two-pipe System)
4
Rigid Venting Systems Installation Instructions
Vent Length Requirements.........................................28
Maximum vent length............................................28
Maximum vent length with increasers......................29
Minimum vent length for vertical installations...........29
Equivalent vent length calculation examples..............30
Standard sizes of boiler flue gas vent adaptors..........30
Component Parts of the Venting System......................31
Horizontal vent termination......................................31
Protective screen...................................................31
Transition Adaptor WB2B 80-105............................31
Vertical vent termination.........................................32
Vent system dimensions.........................................32
Direct Venting Options (Two-pipe System)...................33
Exhaust Vent/Air Intake Requirements.........................34
Combustion Air Supply...........................................34
General requirements..............................................35
General Installation Information...................................36
Installation steps (outline).......................................36
Exhaust and combustion air piping material...............36
Approved materials for two-pipe system...................37
Vent termination location requirements
(for installations in Canada).....................................38
Vent termination location requirements
(for installations in the U.S.A.).................................38
Vent Requirements - Stainless Steel............................39
Additional requirements for stainless steel vent pipe
material................................................................39
Exhaust vent/air intake connection to boiler..............39
Combustion air intake pipe......................................39
Vent System Manufacturers....................................39
Increaser...............................................................40
Parallel adaptor for two-pipe system.........................41
Exhaust vent termination options (vertical
installation)...........................................................42
Other exhaust vent termination options (horizontal
installation)...........................................................42
Maximum equivalent length.....................................42
Component Parts of the Venting System - Stainless
Steel........................................................................43
Vent Requirements - CPVC........................................44
Additional requirements for UL/ULC-listed
CPVC vent pipe material.........................................44
Exhaust Vent/Air Intake Connection To Boiler............44
Approved vent pipe material....................................44
Required starter adaptors for CPVC system...............44
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