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COLLAR
FLASHING
Figure 25
Universal Support
UNIVERSAL SUPPORT
(AC10SU)
(AC10SU * )
Figure 26
Roof Down Slope Hole Size
SLOPE
ACBI *
ASHT+ *
Roof
7"
Pitch
0 *
15"
13-3/8"
(380mm)
(340mm)
2/12
15-5/8"
13-5/8"
(390mm)
(345mm)
4/12
16-1/8"
14-1/8"
(410mm)
(359mm)
6/12
15"
(380mm)
(380mm)
8/12
18-1/4"
16-1/8"
(465mm)
(410mm)
10/12
19-5/8"
17-1/2"
(499mm)
(445mm)
12/12
21-3/8"
(545mm)
(483mm)
* Cross Slope Hole Size
Put the chimney cap into place.
Wash the roof flashing with a solvent or vinegar,
then paint it with rust-proof paint.
Table 2
18
OFFSET CHIMNEY INSTALLATION
CHIMNEY
For the minimum chimney height when using
elbows, see Table 3 and refer to Figure 27.
NOTE: Use of ACBI
fireplaces require the use of a starter section
used at the fireplace top collar. Use H3806
(ACBI7SB30
lations.
Vertical installation 12 feet (3.66 m)
Two (2) elbows
Four (4) elbows
Table 3
NOTES:
• Must return to vertical before penetrating
ceiling or floor.
• A maximum of 2 offsets are allowed.
After reaching the location requiring the elbow,
proceed as follows:
S2100+ *
7"
7"
15-1/8"
(384mm)
15-3/8"
(390mm)
16"
(406mm)
15"
17"
(432mm)
18-1/4"
(465mm)
19-3/4"
(502mm)
19"
21-3/8"
(545mm)
Figure 27 - Offset Chimney Installation
NOTE: DIAGRAMS & IllUSTRATIONS ARE NOT TO SCAlE.
chimney with these
*
) offset starter for offset instal-
*
Minimum Chimney Height
When Using Elbows
15 feet (4.57 m)
17 feet (5.18 m)
Chimney ACBI
Support
Straps
1. Install the first elbow. Turn it in the required
direction. ACBI
: To lock it in place, turn 1/8
*
of a turn. Fasten the straps attached to the
elbow to the surrounding frame, using nails
or drywall screws. ASHT+
Fasten it to the chimney with three (3) 1/2"
metal screws, provided with the elbow.
2. Install the necessary chimney lengths to
*
achieve the required offset. lock the chimney
length together. It is recommended to use
three (3) metal screws. If penetrating a wall,
use a wall radiation shield.
3. Use another elbow to turn the chimney
vertically. ACBI
: lock it to the chimney.
*
Fasten the straps attached to the elbow to the
surrounding framing using nails or drywall
screws. ASHT+
and S2100+
*
the chimney with three (3) 1/2" metal screws,
provided with the elbows.
4. Use a plumb-bob to line up the center of the
hole. Cut a hole for the chimney in the ceiling.
Frame this hole as described previously.
5. From below, install a firestop (refer to Figure
27). ASHT+
and S2100+
*
be used after the offset.
6. Continue with the regular installation.
Straps
Starter
Section
NOTE: This illustration is not to scale.
It represents how the chimney must be
supported. A 30 degree offset only is
allowed in the USA and a 45 degree
maximum offset is allowed in Canada.
*
*
Available from Security Chimneys™
and S2100+
:
*
*
: Fasten it to
*
: A support must
*
ACBI7RS
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