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Chimney Connector Pipe
This black pipe must be 6" (6 inches) in diameter and a 24-gauge or
heavier pipe. Do not use aluminum or galvanized steel, as they cannot
withstand the high temperatures of a wood fire. Do not use single wall pipe
as a chimney. You must connect your stove to a chimney comparable to
those illustrated in this manual. The chimney connector pipe lengths must
be attached to the stove, and to each other, with the crimped end toward
the stove. This will allow any creosote that might form to remain within the
pipe. As a safety precaution, all joints should be sealed with high
temperature silicone (AC-RTV3) and secured with three sheet metal
screws. For proper operation, the chimney connector should be kept as
short as possible. Horizontal lengths of chimney connector pipe should
never exceed 6' (6 feet) and should have an upward slope of ¼" (one-
quarter inch) per foot.
Maintain 18" (18 inches) clearance between the wall and ceiling on any
chimney connector pipe unless wall protection is installed. If using wall
protection, the wall protection should be a U.L.-listed stove board with a 1"
(one inch) clearance (air space) between the board and the wall. This
should reduce the clearance to a combustible to 12" (12 inches).
SECTION IV: THE FUNCTION OF THE ADD-ON FURNACE
The Add-On Furnace is designed to be a supplemental hot air heating
system that will connect to your existing heating system. The furnace will
operate independently of your existing system, while using the same hot
air ducts that your present furnace uses. The furnace comes standard with
a 850 cfm (part number BM-1376) blower that pushes hot air up both
sides and across the top of the unit through an inner-duct chamber built
around the firebox. The heated air exits the unit through an eight-inch
outlet located on the top, near the front of the furnace. The eight-inch pipe
connected at this exit will route the heated air into your duct system.
A wood furnace does not recover as fast as a conventional furnace, so the
unit is equipped with a thermostat (part number AC-1339, see Figure 4) to
turn the blower on and off. This ensures that the blower will always be
moving hot air into your duct system. It is important that you maintain a
continuous fire for maximum performance.
The furnace has a "firebrick grate" system that is designed to last longer
than a standard cast iron grate system. Replacing one or two firebricks is
less expensive than a complete section of cast iron grate, and the brick
will hold more heat and make your wood last longer as it burns.
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