Heatilator BIR42 Owner's Manual page 24

8
NOTICE:
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
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 not shown
(see Figure 6.2)
Ceiling firestops
are required where
chimney passes
through ceiling or
floor