Figure 27
OFFSET CHIMNEY INSTALLATION
*
Chimney AC
Support
ACRS
Starter Section
Rain Cap
Collar
Roof Flashing
Offset Support
Insulated Wall
Radiation Shield
Framing
2” x 3”
Figure 28
Straps
Straps
OFFSET CHIMNEY INSTALLATION WITH WALL PENETRATION
*
NOTE: In cold areas it is recom-
mended to protect the chimney in
a insulated chase.
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.
ANGLED WALL RADIATION SHIELD
*
(RSM+ and RSMI30)
When traversing a combustible wall with the chimney at a 30º or 45º
angle, an angled firestop or wall radiation shield must be installed. Only
one is required.
NOTE: 45º angle for Canada only (
RSMI45
*
)
In cold climate locations (climates where temperatures will fall below 32°
F / 0° C), we recommend that you use the insulated wall radiation shield
since it will maintain the home’s thermal barrier.
RSM+ and RSMI30
(RSMI45 - Canada Only)
Chimney Model
*
Angle
Hole Size
ASHT+ /
(6” dia). Canada only
30º
283 mm x 781 mm (11-1/8” x 30-3/4”)
45º
283 mm x 518 mm (11-1/8” x 20-3/8”)
S-2100+ / /
AC (6” dia).
30º
327 mm x 881 mm (12-7/8” x 34-11/16”)
30º
380 mm x 972 mm (15” x 38-1/4”)
Table 5
Figure 29
Drywall
Insulated Wall
Insulated Wall
Radiation Shield
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
17
*
Available from Security Chimneys™
