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ELBOW SUPPORT
Elbows are to be supported on one end with either a fixed support: Anchor Plate (AP),
or a Heavy Duty Wall Support (WSHD). See Figure 56 for an example with an AP and
Figure 57 for an example with a (WSHD).
Bracing
(By Others)
Vent Section
Half Closure Band
Anchor Plate
(DBSE)
(AP)
Clamp Ring
Figure 56- Elbow with an Anchor Plate (AP)
NOTE: In the case of an Anchor Plate (AP), refer to Figure 41a and 41b for
installation. .
Wall
Figure 57- Elbow with an Heavy Duty Wall Support
Floor/ Ceiling
Half Closure Band
(DBSE )
90
° Elbow
(E90)
Vent Section
Vent Section
Half Closure Band
(DBSEK)
Heavy Duty Wall
Support (WSHD)
Half Closure Band
(DBSEK)
45
-degrees Elbow
(E45)
Vent Section
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
SECTION F - WALL, FLOOR AND ROOF PENETRATION,
GUYING AND BRACING.
A chimney that has to penetrate through a floor, roof or wall made of COMBUSTIBLE
materials, must use a Roof Thimble (RT) or a Wall Thimble (WT). The minimum air
space clearance between the outer wall of the chimney and the combustible material
of the roof / floor / wall listed in the Table 1 must always be respected when using a
Roof Thimble (RT) or a Wall Thimble (WT). See Table 2 for dimensions of the opening
in the floor / wall to respect the clearances.
ROOF THIMBLE (RT)
The Roof Thimble (RT) is used when a chimney passes through a floor or roof made of
combustible materials. The specific clearances in Table 1 must always be respected.
See Table 2 for dimensions of the opening in the floor / wall to respect the air space
clearances.
The Roof Thimble is made of a square plate with a radiation shield on it, to protect
the combustible material inside the hole of the floor/ceiling. Four angles are added on
the hole side of plate to be sure it won't fit if the hole in the floor doesn't respect the
clearance. See Figure 58a.
Figure 58a - Roof Thimble (RT)
The radiant shield may need to be trimmed to fit the height of the floor. The RT is
designed to be installed on a flat roof. They may be installed on a pitch roof if a curb
is installed to provide a flat surface. Guides or Supports must be used either on top
or under the floor/roof/ceiling to ensure that the chimney is well centered in the Roof
Thimble (RT).
When a Flashing (F) and a Storm Collar (SC) are used on top of the roof, use the
exterior sealant S-375 to seal the Storm Collar (SC) on the outer casing with the outer
joint sealant.
Do not installed a chimney joint or a expansion length in the roof/floor space.
Installation:
1. Cut opening to dimensions specify in Table 2.
2. The plate of the Roof Thimble must be installed under the floor / ceiling, with angles
and radiation shield inside the hole.
3. Slide DAS PRO or DIS PRO chimney through the Roof Thimble
4. Install guide under the floor.
Note: When there is thermal expansion, make sure to have the expansion distance
calculated (with the expansion formula on page 5) between the guide and an
outer band (BSE) of a joint section.
5. Install a Flashing (F) on the top of the floor over the chimney , screw it and seal it
with the outer sealant S-375.
6. Add the Storm Collar (SC)
7. Seal with the outer sealant S-375 the Storm Collar (SC) on the outer wall of the
section.
Figure 58b - Roof Thimble installed
24
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