24
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
.
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 58a - Roof Thimble (RT)
Figure 58b - Roof Thimble installed
Figure 56- Elbow with an Anchor Plate (AP)
Figure 57- Elbow with an Heavy Duty Wall Support
Vent Section
Vent Section
Vent Section
Vent Section
Anchor Plate
(AP)
Clamp Ring
Wall
Floor/ Ceiling
Half Closure Band
(DBSE )
Half Closure Band
(DBSEK)
90
° Elbow
(E90)
45
-degrees Elbow
(E45)
Half Closure Band
(DBSE)
Half Closure Band
(DBSEK)
Heavy Duty Wall
Support (WSHD)
Bracing
(By Others)
NOTE:
In the case of an Anchor Plate
(AP)
, refer to
Figure 41a and 41b
for
installation. .
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
).
