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J. Metal Heat Circulating Masonry
This insert conforms with the safety standard UL-1482 and
ULC S628 (Canada) in all respects and is approved to UL
& ULC safety standards for installation and use within a
fireplace with masonry chimney, in accordance with NFPA
211, with a direct flue collar connection.
K. Prefabricated Metal Chimney
The chimney can be new or existing, masonry or prefabricated
and must meet the following minimum requirements:
• Must be minimum 6 inch (152mm) inside diameter of
high temperature chimney listed to UL 103 HT (2100°F)
or ULC S628.
• Must use components required by the manufacturer
for installation.
• Must maintain clearances required by the manufacturer
for installation.
• Refer to manufacturers instructions for installation
• This insert is listed to UL 1482 Standard and is approved
for installation into listed factory-built zero clearance
fireplaces listed to UL 127 conforming to the following
specifications and instructions:
• The original factory-built clearance fireplace chimney
cap must be re-installed after installing the approved
chimney liner meeting type UL 103 HT requirements
(2100°F) per UL 1777.
• If the chimney is not listed as meeting HT requirements,
or if the factory built fireplace was tested prior to 1998, a
full height listed chimney liner must be installed from the
appliance flue collar to the chimney top.
• The liner must be securely attached to the insert flue
collar and the chimney top.
• The air flow of the factory-built zero-clearance fireplace
system must not be altered. The flue liner top support
attachment must not reduce the air flow for the existing
air-cooled chimney system.
NOTE: Refer to chimney liner manufacturer for
recommendations on supporting the liner. Installation into
fireplaces without a permit will void the listing.
Flue Liner with Required Air Space
Stainless Steel Chimney Connector
Minimum 8" (203mm) Masonry Thickness
Minimum Clearance in Accordance with
Figure 16.1 - Generic Insert Model Shown in Illustration
16
Must Extend to Flue Liner
in Front of Smoke Chamber
Insert Listing
Floor Protection in
Accordance with Insert
Listing
Combustible Floor
• No dilution air is allowed to enter the chimney.
a. Secure the fireplace damper in the open position. If
this cannot be accomplished, it will be necessary to
remove the damper.
b. Seal damper area of chimney around chimney
connector with a high temperature sealant or seal
insert against the face of the fireplace.
c. Both methods must be removable and replaceable
for cleaning and re-installation.
Minimum Opening Dimensions Inches Millimeters
A
Height
Front Width (Steel
Surround)
B
Front Width (Cast Surround)
C
Back Width
Depth (Steel Surround)
D
Depth (Cast Surround)
Table 16.1
NOTICE: In Canada when using a factory-built chimney it
must be safety listed, Type UL103 HT (2100°F) [1149°C]
CLASS "A" or conforming to CAN/ULC-S629M,
STANDARD FOR 650°C FACTORY-BUILT CHIMNEYS.
Fire Risk.
When lining air-cooled factory-built chimneys:
• Run chimney liner approved to UL 1777
Type HT requirements (2100°F)
• Re-install original factory built chimney
cap ONLY.
• DO NOT block cooling air openings in chimney.
• Blocking cooling air will overheat the chimney.
Airtight Insulated Clean-Out
Damper Plate Removed or
Fastened in Open Position
Seal with Non-
Combustible Material
7094-802A
23-3/8
594
32
813
32
813
23-7/8
606
18-1/4
464
17-1/2
445
WARNING
04/21
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