Offset Requirements (30° Elbows); Firestops - FireplaceXtrordinair 44 Elite Installation Manual

20
Offset Requirements (30° Elbows)
•
Offsets (using a pair of 30° elbows) may be used to
redirect the chimney. Typically this is done to avoid
structures, align the pipe with framing, or to gain
clearance to combustibles (see Figure 25).
•
A maximum four 30° elbows may be used.
•
Each elbow must be used in conjunction with a
return elbow (so the chimney returns to a vertical
direction)
•
If using a single offset (two 30° elbows) a maximum
of 8' of inclined chimney may be used between
elbows.
•
If using two offsets (four 30° elbows) a maximum of 4'
of inclined chimney may be used between each set
of elbows.
•
For every 6' of inclined chimney a flue support is
required
•
Elbows may be used directly off the top of the
fireplace (maintain a 5" clearance to combustibles
on the back wall, 4 1/2" minimum on the front wall
and header, and 2" minimum to the side walls)

Firestops

WARNING: Many firestops are designed for a 1"
clearance, this fireplace requires a 2"
clearance.
•
Whenever the chimney penetrates a floor or ceiling
a firestop is required on the bottom side of the floor
joists (see Figure 24).
•
When passing through an attic the firestop must be
placed on the attic side of the joists
•
When the chimney passes through a living space it
must be totally enclosed (maintain the minimum 2"
clearance to combustibles)
•
The space between frames that hold the firestop in
place should be measured as follows:
-- Simpson Duravent – 16"
-- Temco 16"
-- Firecraft 16 1/2"
-- FMI 16 1/2"
-- Marco 16 1/2"
Space
between
frames
© Travis Industries
Installation
(for qualified installers only)
Firestop
Figure 24
Chimney must be totally
enclosed when passing
through living space with a
minimum 2" clearance to
combustibles.
Cooling Vents
4090921
Firestop
Firestop
2"
4' Max.
Min.
Max. of 30
degrees
Figure
93508093