Chimney Requirements - Heatilator

ICON
I100 Installation & Operating Instructions Manual

ICON I100 INSTALLATION INSTRUCTIONS
When planning your fireplace location, the chimney construction and necessary clearances must be considered. The
fireplace system and chimney components have been tested to provide flexibility in construction. The following figures are
the minimum distances from the base of the fireplace.
Minimum overall straight height
Minimum height with offset/return
Maximum height
Maximum chimney length between an offset and return
Maximum distance between chimney stabilizers
Double offset/return minimum height
Maximum unsupported chimney length between the offset and return
Maximum straight unsupported chimney height above the fireplace
1. Using Offsets and Returns
To bypass any overhead obstructions, the chimney may be offset using a 30° offset/return (SL1130). Perform the
following steps to determine the correct chimney component combination for your particular installation.
An offset and return may be attached together or a chimney section(s) may be used between an offset and
return.
Measure how far the chimney needs to be shifted to enable it to avoid the overhead obstacle. See Figure 7,
dimension “A” to determine chimney sections required to achieve the needed shift.
After determining the offset dimension, refer to Table 1 and find 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 find the number of chimney sections required and the model number of those
particular chimney parts.
Whenever the chimney penetrates a floor/ceiling, a firestop spacer must be installed.
The effective height of the fireplace assembly is measured from the base of fireplace to top of starter collar.
See Figure 6.
Offset/Returns Table 1
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E. CHIMNEY REQUIREMENTS
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WARNING!
Figure 7 - Chimney Offset/Return
Example:
Figure 7 is 14½”. Using Table 1 the
dimension closest to, but not less
than 14½” is 14
set/return. It is then determined from
the table that you would need 33” (Di-
mension “B”) between the offset and
return. The chimney components that
best fit your application are two
SL1112s.
35144 Rev E
20 ft.
20.5 ft.
90 ft.
20 ft.
35 ft.
24 ft.
6 ft.
35 ft.
Your “A” dimension from
/ ” using a 30° off-
5
8
11