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Installer's Guide
If the roof is flat rather than the normal residential
Pitched roof, refer to Figure 6 for proper clearances.
FLUE/ CHIMNEY/ VENT CONNECTOR
PROPER VENTING REQUIRED!
DO NOT install a manual damper in the chimney or vent
connector.
Thermally-activated type vent dampers are NOT AL-
LOWED for use on these furnaces.
It is desirable to install the shortest vent connector
(also referred to as a flue or chimney connector) pos-
sible with the fewest number of fittings, i.e. transitions
and elbows.
Generally, 6-inch diameter, 24 Ga. or heavier, single
wall, lock seam-type, galvanized steel vent pipe and
fittings are satisfactory materials for the fabrication of
a vent connector.
However, always consult local codes and authorities for
specific minimum requirements.
For some installations, it may be prudent to turn the
furnace flue elbow 90 degrees clockwise, with respect
to the front of the furnace, such that the elbow is open
to the right-hand side of the unit, rather than upward.
Turning the flue elbow may better facilitate connec-
tion of the vent connector piping to the flue elbow on
the highboy. See Figure 7. Due to the presence of the
fan and limit control and the wiring harness, the el-
bow may not be rotated 90 degrees counterclock-
wise. The installer must remove the upper right hand
knockout to allow the vent connector to pass through
the cabinet.
If desired, with the furnace flue elbow turned to the
right, the standard furnace top front panel may be
replaced with a BAYTRM10AVENTAA. It includes
top front panel and a vent trim ring. Contact your
distributor to purchase this part.
All horizontal sections of the vent connector must
slope upward not less than ¼ inch per foot from the
furnace to the vent termination. Long horizontal sec-
tions of the venting system must be supported at least
every five (5) feet with metal straps to prevent sagging
of the vent piping.
7
Secure all joints in the vent connector with sheet metal
6
screws or equivalent fasteners.
The vent connector pipe should extend only to (and not
beyond) the inside wall of the chimney (See Fig. 8).
A thimble should be used to connect the vent connector
pipe to the chimney so that the vent connector pipe
may be readily removed in case of inspection or
replacement.
In cases where the chimney extends to the basement
floor, the draft can usually be improved by filling the
base of the chimney with sand to within 12 inches of
the vent connector pipe after relocating the clean-out
door. (See Fig. 9).
All joints of the chimney must be tightly sealed.
The inside of the chimney should be free of any
obstructions, such as loose brick, broken pieces of tile,
or corroded metal.
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