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chimney height measured from the top of appliance
to the top of the chimney. Chimneys must extend at
least 3 ft. above the roof and at least 2 ft. above the
highest point within 10 ft. of the chimney top. See the
Chimney Connections section of this manual.
3. Zero Clearance or Metal Heatform Fireplaces. These
fireplaces and chimneys must meet the minimum
code specifications as noted above. Factory built
zero clearance fireplaces must be listed and suitable
for solid fuel use. Chimneys must be at least 7 inch
diameter to accommodate a required, continuous,
stainless steel liner from the appliance’s flue collar to
the top termination of the chimney. Only detachable
parts that can be easily replaced (i.e. damper parts,
screens, doors and side, and back refractory panels)
are to be removed. These parts must be stored and
readily available for replacement if the appliance is
ever removed. The removal of any parts that render
the fireplace unusable for burning solid fuel requires
a permanent label to be affixed by the installer that
states the fireplace is unsuitable for burning solid
fuel unless the missing parts are replaced and the
fireplace is restored to its original, certified condition.
4. Chimney Caps. Mesh type chimney caps and spark
arrestors must be able to be removed for regular
inspection and cleaning. Otherwise the mesh should
be removed to prevent possible plugging. Check your
local fire and building codes.
5. Chimney Liner. The chimney must be suitable for
burning solid fuel. Install a continuous stainless steel
liner from the flue collar of the appliance to the top of
the chimney. Liner must be UL Listed to UL1777.
6. Combustible Material Clearances. The fireplace and
chimney must be inspected to make sure there is
adequate clearance to combustible materials. This
includes the top, side, front, and back as well as
concealed combustibles in the chimney and mantle
areas. Your local building inspector or fire authority
should have information on whether older fireplace
meet current codes and are suitable for use.
7. Makeup Air Requirements. This appliance requires
an adequate supply of makeup air to operate safely
and efficiently. In some areas, this is a building code
requirement. Inadequate air supply will cause poor
combustion, inefficient operation, creosote buildup,
back drafting and smoke puffing into the living areas.
If any of the following conditions are evident, a
makeup air supply MUST be installed.
a. Existing fuel-fired equipment shows evidence of
back puffing, smoke roll-out, inefficient operation, or
excessive smell in the living area.
b. Opening a window or door alleviates any of the above
problems or symptoms.
c. The building is constructed with a well-sealed vapor
barrier, tight fitting windows, or has powered exhaust
fans.
d. Excessive condensation on windows in the winter.
e. The building has a ventilation system installed.
f. If, once installed, the solid-fuel appliance does not
draw steadily, burns poorly or inefficiently, back-
drafts or experiences back-puffing when adding fuel.
VENTING (DRAFT) REQUIREMENTS
WARNING:
RISK OF FIRE - EXCESSIVE DRAFT CAN CAUSE
OVERFIRING AND A POSSIBLE STRUCTURE FIRE.
DO NOT OPERATE THIS APPLIANCE WITH THE
FLUE DRAFT EXCEEDING 0.06 in. w.c. (0.1 Pa).
The chimney flue is a critical component to the proper
and efficient operation of any heating appliance. Heating
appliances do not create draft, draft is provided by the
chimney. This appliance requires a draft of 0.05” water
column (0.1 Pa) at the flue collar. To achieve proper
draft, your chimney must meet three minimum height
requirements; minimum height from top of appliance (15
ft. total height from top of appliance), minimum height
above roof penetration (3 ft.), and minimum height (2 ft.)
above highest point of roof within a 10 ft. diameter from
the chimney. The chimney must also meet minimum and
maximum cross sectional requirements. For that reason
a continuous 6” stainless steel liner from the flue collar
to the top of the chimney is required. A stainless steel
adapter is recommended for fastening the stainless
steel liner to the flue collar. The male (or crimped) end
of the adapter must be installed inside the flue collar
to allow condensation or creosote in the liner to drain
back into the firebox. Chimney liners and/or adapters
must be permanently fastened using a minimum of
three (3) screws at each connection. Chimneys outside
of the home or on an exterior wall are difficult to keep
at operating temperatures and may result in increased
creosote buildup, less draft, back drafting problems and
poor appliance performance and should be avoided.
INSTALLATION