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Hearthstone Quality Home Heating Products, Inc
®
Craftsbury (Model 8392)
16
C
ONNECTING THE
S
TOVE TO A
C
HIMNEY
You can install your Craftsbury to a prefabricated metal
chimney, or to a masonry chimney.
This room heater must be connected to (1) a listed Type HT
(2100° F) chimney per UL 103 or ULC S629, or (2) a code-
approved masonry chimney with a flue liner. The chimney
size should not be less than the flue collar, or more than
three times greater than the cross-sectional area of the flue
collar.
We recommend installing a cleanout tee where possible to
simplify chimney cleaning and maintenance.
Connecting to a Prefabricated Metal Chimney
There are two ways to install a prefabricated metal chimney:
•
An
interior
installation where the chimney passes
inside the residence through the ceiling and roof.
•
An
exterior
installation where the chimney passes
through the wall behind the stove then up the outside
of the residence.
Whenever possible, choose an interior chimney. An interior
chimney heats up quickly and retains its heat; thus
promotes a better draft and discourages the formation of
creosote. An exterior chimney does not benefit from the
warmth of the building, so it typically operates at lower flue
temperatures than an interior chimney and may experience
increased creosote accumulation.
When connecting the Craftsbury to a prefabricated metal
chimney, you must follow, precisely, the manufacturer's
installation instructions. Use only Type HT (2100° F),
prefabricated metal chimneys listed per UL 103 or ULC
S629 standards.
Ensure the size of the prefabricated chimney’s flue is
appropriate for the Craftsbury. The Craftsbury requires a 6"
(152 mm) inside diameter flue for new installations. A 6”
diameter flue provides adequate draft and performance.
You can use an 8" (203 mm) diameter existing flue with a
reducer. An oversized flue contributes to creosote
accumulation. (In this case, bigger is NOT better.)
When purchasing a prefabricated chimney to install with
your stove, Ensure you also purchase from the same
manufacturer the wall pass-through (or ceiling support
package), "T" section package, fire-stops (when needed),
insulation shield, roof flashing, chimney cap, and any other
required
accessories.
Follow
the
manufacturer’s
instructions when installing the chimney and accessories.
In addition, ensure you maintain all manuf
acturers’
recommendations for the proper clearances to the chimney.
Connection to a Masonry Chimney
Consider two primary elements when connecting your stove
to a masonry chimney: the chimney itself and the thimble
where the stovepipe connects to the chimney.
Use only
code approved masonry chimneys containing a proper
flue liner.
Before connecting to a masonry chimney, hire a
professional to examine the chimney for cracks, loose
mortar, and other signs of deterioration and blockage. If the
chimney needs repair, complete them before installing and
using your stove. Do not install your stove until the chimney
is safe for use.
En
sure the chimney’s cleanout is complete and working
properly. To avoid a loss of draft, the cleanout door must
close completely and provide a tight seal. If the cleanout
door leaks, the chimney will cool, your stove will perform
poorly, and creosote can form.
En
sure the size of the chimney’s flue is appropriate for this
stove and that it is not too large. Use a masonry chimney
with a maximum
6” Diameter or 8" x 8" (203 mm x 203 mm)
tile size for best results. An oversized flue contributes to the
accumulation of creosote.
Use the following checklist to ensure that your masonry
chimney meets these minimum requirements:
Masonry Chimney wall construction:
•
Mortared brick or modular block at least 4" (102 mm)
thick
– must use liner
•
A mortared rubble or stone wall
– must use liner
F
LUE LINER OPTIONS
:
•
Tile - minimum wall thickness of 5/8" (16 mm),
installed with refractory mortar, and with at least 1"
(25 mm) air space around the liner
•
Stainless steel -
UL listed 6” diameter, insulated or
wrapped liner, or the space around the liner filled with
vermiculite or suitable material (these keep the liner
warmer for better performance)
•
Ensure any equivalent flue liner is a listed chimney
liner system meeting type HT requirements or other
approved material
.
I
NTERIOR CHIMNEY REQUIREMENTS
:
•
Must have at least 2" (51 mm) clearance to
combustible materials
•
Must install fire stops at the spaces where the
chimney passes through floors and/or ceiling
•
Any insulation material must be at least 2" (51
mm) from the chimney
E
XTERIOR CHIMNEY REQUIREMENTS
:
•
At least 1" (25 mm) clearance to combustible
materials