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NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
19
ANGLED WALL RADIATION SHIELD
(RSM+, RSMI30, RSMI45)
When traversing a combustible wall with the chimney at a 30° or 45°
angle, an angled firestop and/or wall radiation shield must be installed.
Only one is required (Figure 27). Table 6 gives recommended hole size
for installing a wall radiation shield.
Note: 45° angle installation for Canada only.
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.
Figure 27
Figure 26
RSM+ and RSMI30, RSMI45
Chimney Model Angle Hole Size
ASHT+ (8" I.D.) 30º 14-3/8" x 36-1/2” (365mm x 927mm)
Canada Only 45º 14-3/8" x 24-3/4” (556mm x 629mm)
S-2100+ (8" I.D.) 30º 16" x 40” (406mm x 1016mm)
Canada Only 45º 16" x 27-1/4” (406mm x 692mm)
AC (8" I.D.) 30º 15-1/4" x 38-1/4” (365mm x 927mm)
Table 6
Rain Cap
Storm Collar
Roof Support
Flashing
Offset Support
Angled Insulated Wall
Radiation Shield
Note: In cold areas it is recom-
mended to protect the chimney
in a insulated chase.
Framing
2” x 4”
Insulated
Wall
Drywall
Insulated Wall
Angel Wall Radiation Shield
(Insulated)
OFFSET CHIMNEY INSTALLATION WITH WALL PENETRATION
Figure 25
OFFSET CHIMNEY INSTALLATION
Chimney AC
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.
ACRS
(radiation
shield)
Straps
Support
Brace
Straps