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INSTALLING YOUR FURNACE
Consequently, this could cause the vent safety control
system to shut down the furnace.
The area above header within the stud space MUST be kept
clear of any attic insulation to allow the free circulation of
air around the oval vent piping. In some areas the building
code requires the use of an attic shield.
The B/W vent must extend through the ceiling and roof
terminating at least 12-feet above the finished floor on
which the furnace rests.
INSTALL FURNACE VENT
Attach a 4-foot length of oval, double-wall vent pipe
through the plate spacers to the hold-down plate. Push
the vent pipe into the hold-down plate until it is completely
seated. The hold-down cleat will engage the groove in the
vent pipe.
COMPLETE THE VENTING
Type B/W gas vent shall extend from the header plate of
the furnace to a point above the highest ceiling plate within
the stud space through which the vent passes, without any
offsets or crossovers. The first vent pipe offset, (if required),
may not be any closer than 2-feet from the header and
needs to extend past the ceiling plate. After a type B/W gas
vent passes through the highest ceiling plate within a stud
space above the furnace to which it serves, the vent system
may be completed with a Type B gas vent, from the SAME
manufacturer (do not mix brands of pipe). Offsets cannot
be greater than 45 degrees from vertical. Refer to The
Uniform Mechanical Code.
Install the oval-to-round adapter. Complete the piping
extending it through the roof. Use a 4-inch round, double-
wall (Type B) vent pipe, roof flashing, storm collar and vent
cap as shown. The vent cap must be at least 2-feet higher
than any point that is within 10- feet of the vent cap. There
must be at least a 1-inch clearance between the vent pipe
and any combustible material.
CAUTION: To avoid damage to wiring, be sure to route
the wires away from the path of the furnace vent.
Attaching Your Furnace
Clear the wall recess of all debris, remove any wood or plaster.
Stand the furnace in front of recess, holding the furnace body
at an angle. Insert flue collar into the opening in the header
plate and raise furnace carefully Figure 9A, 9B. Swing bottom
of furnace into wall recess with front edges of legs flush with
2x4 floor plate. In the holes provided, nail through the legs
into studs or floor plate. Figure 10
Do not damage gasket glued to underside of header plate
when placing furnace in wall. Avoid nailing the legs so tightly
that it disturbs the inner furnace casing. Do not try to force
the furnace into a smaller-than-specified recess.
16
COZY TOP VENT GRAVITY GAS WALL HEATER
If an existing gas line is preventing the installation of a Cozy
Furnace, a cut-out may be made using tin snips on one of
the legs to clear this existing gas line. This cut-out will be on
one side of the unit on the rear side of
the leg and only if necessary.
FIGURE 9A – INSERT FURNACE
B/W VENT
25,000 - 35,000 BTU/hr. MODELS
BOTTOM OF
FURNACE
FIGURE 9B – DUAL FURNACE
TILT FURNACE &
INSERT FLUE INTO
RECTANGULAR OPENING IN
HEADER PLATE
RAISE FURNACE &
SWING BOTTOM OF
UNIT INTO WALL
OPENING
FIGURE 10 – NAIL PLACEMENT
BOTTOM OF FURNACE
NAIL FURNACE LEG TO
STUD OR FLOOR PLATE
(SEE DETAIL BELOW)
SECURE
SUPPORT LEGS
TO FLOOR PLATE
LEG
NAIL AT ANGLE
FLOOR PLATE
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