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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),werecommendthatyouusetheinsulatedwallradiationshield
since it will maintain the home’s thermal barrier.
RSM+ and RSMI30
(RSMI45 - Canada Only)
Chimney Model Angle Hole Size
ASHT+ / HT6103+
(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+ / HT6000+ /
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&ILLUSTRATIONSARENOTTOSCALE.
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