COZY 90N30A Instrucciones De Instalación Y Funcionamiento página 7

Consult the specification chart on Page 3 for the correct floor opening size for the floor furnace to be installed.
Lay out the opening size on the floor by using masking
tape or cutting a piece of cardboard to the opening size.
The opening must be cut square. If you have determined
that there is nothing under the floor to interfere with
the installation, you are now ready to cut the opening.
Start by drilling \t2 inch holes inside the lines of each
comer. Use a keyhole saw or a properly grounded
saber saw to cut along the lines making sure to keep
the lines straight and the comers square. If the opening
dimensions are not correct, it may be difficult to fit the
floor furnace into the opening. Forcing the floor furnace
through the opening may create stresses that cause the
floor furnace to be excessively noisy.
FIG. 4
Joist
FLOOR
FURNACE
OPENING
MOST INSTALLATIONS WILL
REQUIRE CUTTING A FLOOR JOIST
Cut the floor joist so that double headers of the same
size lumber can be used to frame around the floor
furnace. Double headers are necessary to maintain
the strength of the floor.
Lay aside the grill and package containing the thermostat, wires, etc., grasp two opposite sides of the outer casing and
lower the floor furnace gently through the opening. Support the furnace evenly by the flange at the top of the outer casing.
Trim back carpet, padding, and other types of floor covering so that the entire flange rests directly on the floor. If not evenly
supported on all four sides, stresses may be created that cause excessive expansion and contraction noises as the floor
furnace heats and cools. Anchor the floor furnace in place by driving two galvanized roofmg nails through each side of the
outer casing into the double headers approximately 1 inch below the flange. Place the grill into position making sure it lays
flat against the outer casing flange. Leave the grill in place until time to light the furnace to keep occupants from falling into
the furnace.
1017826-A
CUTTING THE FLOOR OPENING
FIG. 5
Ground
Level
Minimum
PIT
IF THE CLEARANCE BETWEEN THE BOTTOM OF THE
FLOOR FURNACE AND THE GROUND IS NOT ADEQUATE:
Dig a pit that will provide clearances of at least 6 inches under
Double
the floor furnace, 18 inches on the end where the gas valve is
Header
located and 12 inches on the other three sides. Slope the sides
of the pit to prevent dirt from caving into the pit.
If there is any possibility that water may accumulate in the
pit, a drain must be provided. If a drain cannot be provided,
fabricate a waterproof pan of at least 16 ounce per square foot
sheet copper or a suitable substitute. Size the pan to provide 6
inches clearance to the bottom of the floor furnace, 18 inches
on the side where the gas valve is located and 6 inches on the
other three sides. The sides of the pan must extend at least 4
inches above the ground. Anchor the pan to prevent it from
floating up against the bottom of the floor furnace when
water is present. Failure to do so may result in the pan
rising to seal off air for combustion and venting. If this
occurs, carbon monoxide (C.O.) a colorless, odorless gas
may be formed which can cause serious injury or death.
SETTING THE FLOOR FURNACE
Page 6
JOIST
FLOOR
FURNACE
18"
6" Minimum
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Floor
JOIST
6" Minimum
Draft
Hood
12"
Min.
PIT