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126607-01A
9
Figure 12 - Typical Offset Installations
Return
Elbow
Offset
Elbow
Offset
Elbow
Return
Elbow
Offset
Elbow
6' Max.
6' Max.
6' Max.
6' Max.
6' Max.
6' Max.
Return
Elbow
Offset
Elbow
Offset
Elbow
Return
Elbow
A
B
C
Ceiling
Support Pipe
12S-8DM
Return
Elbow
Figure 13 - Chimney Supports
VENTING INSTALLATION
Continued
Straps
Angle
Firestop
Ceiling
Support Pipe
12S-8DM
Return
Elbow
Straps
DETAIL B
DETAIL A
See
DETAIL B
See
DETAIL A
FIRESTOP SPACERS (FS-8DM)
Firestop spacers are required at each point where the chimney pen-
etrates a floor or ceiling joist space. Their purpose is to establish
and maintain the required clearance between the chimney and the
combustible materials.
When the pipe passes through a framed opening into a living space
above, the firestop must be placed onto the ceiling from below as
shown in Figure 14. When the pipe passes through a framed opening
into an attic space above, the firestop must be placed on the attic
floor as shown in Figure 15.
Existing
Ceiling Frame
Firestop Spacer
Screws or Staples
(Min. of 8)
Firestop
Spacer
Screws or Staples
(Min. of 8)
Existing
Ceiling Frame
Figure 14 - Firestop Spacer with Living Space Above Ceiling
Figure 15 - Firestop Spacer with Attic Space Above Ceiling
