Hearth and Home Technologies CASTLEWOOD 42 - Manual (Page 17)

Outdoor Lifestyles by Hearth & Home Technologies Inc. • 4070-300 Rev D • 11/11 17
6
Complete the Enclosure
B. Chase Top
A metal chase top is required to seal the top of the chase
around the chimney pipe. The top should include a turn-
down and drip edge to prevent water from seeping into the
chase. Provide a 1/8 in. (3 mm) gap around the flue pipe and
slope the top downward away from the penetration.
• All seams must be caulked to prevent leaks.
• A chase installation must use a chase top. Chase tops
are available from your HHT dealer or may be field
constructed.
• Attach the chase top to the top of the chase.
A. Chimney Termination
Chimney Termination Requirements (see Fig-
ure 6.1)
• Must have a cap approved and listed for this fireplace
system
• Must not be located where it will become plugged by
snow or other material
• Must terminate at least 3ft (914 mm) about the roof
and at least 2 ft (610mm) above any portion of the
roof within 10 ft. (305mm)
• Must be located away from trees or other structures
Fire Risk
• Must maintain 2 in. (51 mm) air clearance
to insulation and other combustible
materials.
WARNING
Slope Downward
Turn-down
Drip Edge
2 in. (51 mm) Collar
on Chase Top
.018 (26 ga) min. Galvanized Chase Top
C. Install the Termination Cap
Note: To protect against the effect of corrosion on those
parts exposed to the weather, the termination cap can be
painted with a rust-resistant paint.
Fire Risk
• The minimum overlap of cap to pipe
MUST be met or chimney may separate
from cap.
Separation allows sparks, heat and embers
to escape.
WARNING
Install the chimney sections up through the chase enclosure
and refer to termination cap instructions.
NOTE: TR11/TR444 Round Termination Cap and TR11T/
TR442 Round Telescoping Termination Cap not recom-
mended for Installations less than 20 feet.
ST1175/ST475 Square Termination Cap
Chimney
Pipe
Chase Top
Termination Cap
Chase
Collar
2 in. (51 mm)
Minimum Height
Place waterproof
caulk or sealer under
each flange of the
termination cap and
on top of each screw
to help prevent leaks.
Flange
Termination cap pipe and chimney section must overlap 1-1/2 in. (38 mm)
2 in. (51 mm)
maximum
4 3/4 in. (121 mm)
maximum
The last section of pipe
must stop between 2 in. (51
mm) above the top of the
chase and 4 3/4 in. (121
mm) below the top of the
chase.
Figure 6.2 Installing an ST1175/ST475 Square Termination Cap
Figure 6.1 Field Constructed Chase Top Specification