16
11/23
7094-802E
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
• 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.
Figure 16.1 -
Generic Insert Model Shown in Illustration
Minimum 8” (203mm) Masonry Thickness
in Front of Smoke Chamber
Damper Plate Removed or
Fastened in Open Position
Seal with Non-
Combustible Material
Minimum Clearance in Accordance with
Insert Listing
Floor Protection in
Accordance with Insert
Listing
Combustible Floor
Airtight Insulated Clean-Out
Stainless Steel Chimney Connector
Must Extend to Flue Liner
Flue Liner with Required Air Space
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
.
NOTE:
Refer to chimney liner manufacturer for
recommendations on supporting the liner. Installation into
fireplaces without a permit will void the listing.
Minimum Opening Dimensions Inches Millimeters
A
Height
19-1/4
489
B
Front Width (Steel
Surround)
27
686
Front Width (Cast Surround)
27
686
C
Back Width
24-1/2
622
D
Depth (Steel Surround)
16
406
Depth (Cast Surround)
15-1/4
387
Table 16.1
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.
WARNING
•
DO NOT block cooling air openings in chimney.
•
Blocking cooling air will overheat the chimney.
