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Heat & Glo • EXCLAIM-36C Woodburning Fireplace • 4013-093 Rev G • 08/06
18
B. Using Offsets/Returns
To bypass any overhead obstructions, the chimney may be
offset using a 30-deg (SL430) offset/return.
An offset and return may be attached together or a chimney
section(s) may be used between an offset and return.
Perform the following steps to determine the correct chim-
ney component combination for your particular installation:
• Measure how far the chimney needs to be shifted to enable
it to avoid the overhead obstacle. See Figure 5.3. Use
dimension “A” to determine chimney section required to
achieve the needed shift.
• After determining the offset dimension, refer to Table 5.2
and fi nd the “A” dimension closest to but not less than the
distance of shift needed for your installation.
• The “B” dimension that coincides with the “A” dimension
represents the required vertical clearance that is needed
to complete the offset and return.
• Read across the chart and fi nd the number of chimney
sections required and the model number of those particular
chimney parts.
• Whenever the chimney penetrates a fl oor/ceiling, a ceiling
fi restop must be installed.
• The effective height of the fi replace assembly is measured
from the base of the fi replace to the top of the starter collar.
See Dimensions in Section 12.
Table 5.2
A
B
1-1/4 in. (32 mm
OVERLAP
Figure 5.3 Chimney Offset/Return
Example: Your “A” dimension from Figure 5.3
is 14 1/2 in. (368 mm). Using Table 5.2 the
dimension closest to, but not less than 14- /2
in. (368 mm) is 14 5/8 in. (371 mm) using a
30° offset/return. It is then determined from
the table that you would need 33 in. (838 mm)
(Dimension “B”) between the offset and return.
The chimney components that best fi t your
application are two SL412s.
Fire Risk
• Draft will be restricted if offset/returns
greater than 30° are used.
WARNING
AB
SL406 SL412 SL418 SL436 SL448in. mm in. mm
3-7/8 98 14-1/2 368 -----
6-1/4 159 18-5/8 473 1 - - - -
9-1/4 235 23-3/4 603 - 1 - - -
12-1/4 311 29 737 - - 1 - -
14-5/8 371 33 838 - 2 - - -
17-5/8 448 38-1/4 972 - 1 1 - -
21-1/4 540 44-5/8 1133 - - - 1 -
23-5/8 600 48-3/4 1238 1 - - 1 -
27-1/4 692 55-3/4 1416 ----1
29-5/8 752 59 1499 1 - - - 1
32-5/8 829 64-1/4 1632 - 1 - - 1
35-5/8 905 69-1/2 1765 - - 1 - 1
38 965 73-5/8 1870 - 2 - - 1
41 1041 78-3/4 2000 - 1 1 - 1
44-5/8 1133 85 2159 - - - 1 1
47 1194 89-1/8 2264 1 - - 1 1
50-5/8 1286 95-1/2 2426 ----2
Proper assembly of air cooled chimney parts results in an overlap of chimney joints of
1-1/4 in. (32 mm). Effective length is built into this table.
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