Hearthstone
Clydesdale Fireplace Insert Model 8491
Page 17 of 35
Venting Components & Configuration
It is very important to also follow minimum
clearances for chimney connectors to
combustibles such as walls and ceilings, when
installing the stove near non-combustible
surfaces
Single wall connector is 24 MSG or 25 MSG
blued steel stovepipe.
Installing a Venting System
DO NOT CONNECT THIS UNIT TO ANY AIR
DISTRIBUTION DUCT OR SYSTEM
Secure all joints, including attaching the flue liner to
the Fireplace Insert's flue collar, with three sheet
metal screws. Install #10 x 1/2" (3 mm x 13 mm)
sheet metal screws into the holes pre-drilled in the
flue collar. Eliminating the screws can cause joints to
separate from the vibration that result from a
creosote chimney fire.
Remember, the NFPA has recommended minimum
clearances for chimney connectors to combustibles
such as walls and ceilings. Once the Fireplace Insert
is installed at safe distances from these combustible
surfaces, it is important to maintain these connector
clearances for the remainder of the installation.
Connecting Your Wood Fireplace
Insert
You can connect your Clydesdale to a prefabricated
metal chimney or a masonry chimney. See
Figure 7
to aid in connections.
Connecting to a Prefabricated
Metal Chimney
THIS FIREPACE INSERT MUST BE INSTALLED
WITH A CONTINUOUS CHIMNEY LINER WITH A
MINIMUM DIAMETER OF 6” EXTENDING FROM
THE FIREPLACE INSERT TO THE TOP OF THE
CHIMNEY. THE CHIMNEY LINER MUST CONFORM
TO THE CLASS 3 REQUIREMENTS OF CHIMNEY
LINER STANDARDS CAN/ULC-S635 OR CAN/ULC-
S640.
You can install the Clydesdale in masonry or zero
clearance fireplaces. Before installing the stove in a
factory-built fireplace, the fireplace must have the
following characteristics:
1) Listed per UL 127 or ULC S610.
2) Include a full height listed chimney liner meeting
type HT requirements (2100° Fahrenheit) per UL
1777 (United States) or ULC S635 (Canada)
standards.
3) The means to prevent room air passage to the
chimney cavity of the fireplace.
4) Does not disturb the airflow in or within the
fireplace when installed (louvers, or cooling air
inlet or outlet ports must not be blocked).
5) Not be altered in any way, except for the
following:
a) External trim pieces which do not affect the
operation of the fireplace can be removed,
providing they are stored on or within the
fireplace for re-assembly if the insert is
removed.
b) The chimney damper can be removed to
install the chimney liner.
6) Must not have blocked circulating chambers (if
available).
7) The means for removing the insert to clean the
chimney flue.
8) Have a permanent metal warning label (provided
with the Clydesdale—see illustration to the
below) attached to the fireplace by riveting it to
the outside wall, stating that the fireplace must be
restored to its original condition for safe use
without the insert.
Remember, you must adhere to all previously
described floor protection requirements when
installing into a zero clearance fireplace.
WARNING: DO NOT CONNECT THE FIREPLACE
INSERT TO A CHIMNEY FLUE SERVING ANOTHER
APPLIANCE.
Ensure the size of the chimney’s flue is appropriate
for the Clydesdale. The Clydesdale requires a 6"
(152 mm) inside diameter flue for new installations.
