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5608 741 - 04
Vitodens Rigid and Flex Venting Systems Installation
Table of Contents
Direct Venting
(Two-pipe System)
General Installation Information
...................................29
Installation steps (outline).......................................29
Exhaust and combustion air piping material...............29
Approved materials for two-pipe system.................30
Exhaust Vent/Air Intake Requirements
.........................31
Combustion air supply............................................31
General
requirements..............................................32
Vent Requirements - Stainless Steel
...........................33
Additional requirements for stainless steel
vent
pipe
material..................................................33
Component Parts of the Venting System - Stainless
Steel
........................................................................37
Vent Requirements - CPVC
........................................38
Additional requirements for UL/ULC-listed
CPVC vent pipe material.........................................38
Exhaust Vent/Air Intake Connection To Boiler............38
Requirements for UL/ULC Listed Rigid PP(s)
Vent Pipe Materia
l.....................................................39
Vent system manufacturers.....................................39
Vent and Air Intake Pipe Starter Adaptors - PP(s).
.........40
Side Wall Vent Termination - Stainless Steel,
CPVC or PP(s
)..........................................................42
Vent Length Requirements
.........................................43
Maximum vent/air intake pipe length - horizontal........43
Maximum vent/air intake pipe length -
horizontal/vertical (hybrid system)............................46
Standard Long Sweep Elbows
.....................................47
Equivalent vent length calculation example................48
Component Parts of the PP(s) Venting System
.............50
Vertical pipe system...............................................50
Horizontal pipe system............................................52
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