7
3"
4-1/8"
2-1/2"
2-1/2"
4-1/8"
3"
FIGURE 11
Floor, Ceiling Joist
(Framed all 4 sides)
Lower Bucket
FIGURE 9c
Trim Plate
Smoke Pipe Adapter
Lower Bucket
Ceiling Support
Lower the prepared Chimney Length into the Lower Bucket.
Ensure that the Chimney Length rests on the Lower Bucket into
the Ceiling Support (see Figure 9c).
NOTE: Any length of CF Sentinel Chimney can be used.
There is no special "Starter" length required with the
Ceiling Support. Make sure the length is long enough to be
above the floor level or above the Attic Insulation Shield.
Continue adding chimney lengths until a height of about 2 feet
below the next ceiling level is achieved.
Chimney
Length
Inner Liner
of Chimney
Length
Insulation between
Outer Casing and Inner
Liner of Chimney
Length
Basecap Portion
(painted black)
Short crimped Smoke
Pipe Adapter Portion
Outer Casing of
Chimney Length
FIGURE 9b
Inward bead of
outer casing
Beveled Portion Up
Crimped end
Towards Appliance
FIRESTOP JOIST SHIELD (JS)
A Firestop Joist Shield (JS) must be installed where the
chimney passes from one living space to another living space as
shown in figure 11. It is designed to provide proper firestopping
between floors and to keep direct radiation from the chimney away
from the joist framing.
Round Top
Storm Collar
Roof Flashing
Attic Insulation
Shield
Framed Enclosure 2" (50mm)
clearance from chimney to
combustible wall
Chimney Sections
Chimney Sections
Living Space
Attic Space
Floor, Ceiling Joist
(Framed all 4 sides)
Floor, Ceiling Joist
(Framed all 4 sides)
Roof Joist
(Framed all 4 sides)
Two Story
Basement Installation
Ceiling Support
Living Space
Framed Enclosure 2"
(50mm) clearance from
chimney to combustible
wall
Smoke Pipe Adapter
Firestop Joist Shield
FIGURE 10
Firestop Joist
Shield Positioned
into Framing from
below
Close Box Corners
Using Tabs
Chimney Length
Nail Side Flanges
Securely To Bottom
of Framing
FIRESTOPPING
Firestopping is required at every joist level. Wherever a chimney
passes through a ceiling or floor, through a wall, or into an
enclosure, it must be firestopped. No firestopping is required in
conjunction with a Ceiling Support installed as shown in Figures
11, the Ceiling Support provides the firestopping.
A fire stop performs the following essential functions for both
dwelling and the chimney:
- Together with a fully framed opening (all four sides), it controls
vertical and horizontal spread of any fire external to the chimney.
- It stabilizes the chimney in the framed opening and defines and
maintains the required AIR SPACE clearance to combustibles.
- It reduces heat losses from the dwelling by blocking vertical air
circulation in the spae around the chimney.
- When located at a ceiling below a roof flashing (or below a roof
support) it helps provide stability for chimney extending above the
roof.
- At the level where the chimney penetrates the air/vapour bariier,
special attention is required. Seal the vapour barrier to the Ceiling
Support, Attic Shield (Joist Shield if the chimney is enclosed in the
attic) or Wall Thimble using an appropriate caulking compound as
per the requirement of local authorities.
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