13
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Installation
A positive flue connection is providing a seal between the vent pipe or
liner and the existing fireplace chimney for the purpose of preventing
room air passage to the chimney cavity of the fireplace. There are differ-
ent approved methods to achieve this. See
Direct Connect Positive Flue
Connection
on this page.
Direct Connect Positive Flue Connection
See the following instructions for approved methods of achieving a
positive flue connection - See
Figure 12.
A qualified installer should evaluate the existing fireplace to determine
the best method for achieving a positive flue connection between the
vent pipe or liner and the existing fireplace chimney. The most common
method for achieving a positive flue connection in masonry fireplaces
is to secure a seal-off plate (i.e. 22-gage sheet steel) in the fireplace
throat using masonry screws. Other acceptable methods include packing
noncombustible material (i.e. high temp fiberglass or ceramic insulation)
around the vent pipe or using a flue adaptor. Whatever “seal off” method
is used, it must effectively seal the area to prevent room air passage to
the chimney cavity of the fireplace.
IMPORTANT NOTE:
See Draft Requirements and Selecting a Proper
Venting System on Page 4 to assist you in choosing the proper venting
system for your installation.
WARNING: CHIMNEY CONNECTOR MUST BE IN GOOD CONDITION AND
KEPT CLEAN. DO NOT INSTALL DAMAGED PARTS.
Remove the existing chimney cap and install a stainless steel liner into
the chimney (if a special section has been used or drilled to attach to the
insert, it must be the bottom piece). The next piece should be a dripless
slip joint, followed by the rest of the chimney liner. Fasten the chimney
at the top when it is positioned so that the slip joint will allow the lowest
piece to slide up enough to clear the insert during installation. Insulate
the top four to six feet between the liner and the chimney to prevent heat
loss. Install the cap and flash if necessary to prevent water or creosote
from entering the chimney’s venting system.
From inside the fireplace firebox, attach any adaptors or flue offsets and
slide the liner up as far as necessary for the bottom piece to clear the
insert during installation.
In Canada, This fireplace insert must be installed with a continuous chimney
liner of 6” diameter extending from the fireplace insert to the top of the
chimney. The chimney liner must conform to the Class 3 requirements
of CAN/ULC-S635, Standard for Lining Systems for Existing Masonry
or Factory-Built Chimneys and Vents, or CAN/ULC S640, Standard for
Lining Systems for New Masonry Chimneys.
Figure 11
Figure 12 - Positive Flue Connection
u
A non-combustible seal is required at the damper area (to prevent
dilution air from entering the chimney). See
Direct Connect Positive Flue
Connection
on this page. A seal-off plate method is shown here.
u
Side View
of Insert
Fireplace
Chimney
A full chimney liner
is recommended
Must extend starter
section past the damper
area as a minimum
POSITIVE FLUE CONNECTION (REqUIRED IN CANADA)
CHIMNEY LINER INSTALLATION
Alternate Flue Liner Attachment Method
(for short fireplace installations)
For shorter fireplace firebox installations, where it may be difficult to
attach the liner to the flue collar on top of the insert, you can complete
the final liner attachment from within the insert firebox as follows:
1. Remove the screw, bracket and inner collar as shown below.
2. Using 3 screws, secure the liner to the inner collar.
3. From within the insert firebox, pull down the inner collar (with liner
attached).
4. Reassemble the components as shown below.
Screw
Bracket
Outer
Collar
Inner Collar
Planning Installation
Safety and General
Installation
Operation
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Troubleshooting
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