Chimney Installation; Typical Chimney System - Heatilator BIR42-B Installation Manual

5

Chimney Installation

A. Typical Chimney System
NOTICE: Chimney performance may vary.
• Trees, buildings, roof lines and wind conditions affect performance.
• Chimney height may need adjustment if smoking or overdraft occurs.
Chimney must extend
beyond combustible
roof structure
Maintain minimum
height of chimney
above roof
Install roof flashing
according to minimum
requirements
Offsets/returns
may not exceed
30° from vertical
Lock chimney
sections together
firmly to resist
movement
Figure 5.1 Typical Chimney System - Guidelines for Chimney System Installation
18 Heatilator • Birmingham 42-B Installation Manual • 4059-715 • Rev C • 2/14/13
Termination Cap
Additional
support for
tall chimneys
Storm Collar
Maintain minimum
clearances to
combustibles as
specified
Support straps for offsets
(not shown) must be
secured to adequate framing
Offsets/returns must be
secured with the screws
provided (outer pipe only)
Attic shield
Ceiling firestops
are required where
chimney passes
through ceiling or
floor