Clearances And Accessibility; Furnace Suspension; Existing Furnace Removal - Amana GUCA Installation Instructions Manual

• Exposure to contaminated combustion air will result
in safety and performance-related problems. Do not
install the furnace where the combustion air is ex-
posed to the following substances:
chlorinated waxes or cleaners
chlorine-based swimming pool chemicals
water softening chemicals
deicing salts or chemicals
carbon tetrachloride
halogen type refrigerants
cleaning solutions (such as perchloroethylene)
printing inks
paint removers
varnishes
hydrochloric acid
cements and glues
antistatic fabric softeners for clothes dryers
and masonry acid washing materials
• Seal off a non-direct vent furnace if it is installed near
an area frequently contaminated by any of the above
substances. This protects the non-direct vent fur-
nace from airborne contaminants. To ensure that the
enclosed non-direct vent furnace has an adequate
supply of combustion air, vent from a nearby uncon-
taminated room or from outdoors. Refer to the
Section V, Combustion and Ventilation Air Require-
ments for details.
• If the furnace is used in connection with a cooling unit,
install the furnace upstream or in parallel with the
cooling unit. Premature heat exchanger failure will
result if the cooling unit is placed ahead of the
furnace.
• If the furnace is installed in a residential garage,
position the furnace so that the burners and ignition
source are located not less than 18 inches (457 mm)
above the floor. Protect the furnace from physical
damage by vehicles.
• If the furnace is installed horizontally, the furnace
access doors must be vertical so that the burners fire
horizontally into the heat exchanger. Do not install
the unit with the access doors on the "up/top" or
"down/bottom" side of the furnace.

CLEARANCES AND ACCESSIBILITY

Installations must adhere to the clearances to combustible
materials which this furnace has been design certified to.
The minimum clearance information for this furnace is
provided on the unit's clearance label. These clearances
must be permanently maintained. Clearances must also
accommodate an installation's gas, electrical, and drain
trap and drain line connections. If the alternate combustion
air intake or vent/flue connections are used additional
clearances must be provided to accommodate these con-
nections. Refer to Section IX, Vent Flue Pipe and Combus-
tion Air Pipe for details. NOTE: In addition to the required
clearances to combustible materials, a minimum of 36
inches service clearance must be available in front of the
unit.
TOP
SIDE SIDE
BOTTOM
Counterflow
Upflow
A furnace installed in a confined space (i.e., a closet or utility
room) must have two ventilation openings with a total
minimum free area of 0.25 square inches per 1,000 BTU/
hr of furnace input rating. Refer to Specification Sheet for
minimum clearances to combustible surfaces. One of the
ventilation openings must be within 12 inches of the top; the
other opening must be within 12 inches of the bottom of the
confined space. In a typical construction, the clearance
between the door and door frame is usually adequate to
satisfy this ventilation requirement.

FURNACE SUSPENSION

If suspending the furnace from rafters or joist, use 3/8"
threaded rod and 2"x2"x1/8" angle iron as shown below.
The length of rod will depend on the application and the
clearances necessary.
3/8" DIAMETER
THREADED ROD
(6 PLACES)
HOLD DOWN
NUTS
SUPPORT
NUTS
2" 2" 1/8" ANGLE IRON
X X
(3 PLACES)
POSITION AS CLOSE AS POSSIBLE
TO BLOWER DECK TO ALLOW FOR
CIRCULATOR BLOWER REMVOAL
Suspended Furnace

EXISTING FURNACE REMOVAL

NOTE: When an existing furnace is removed from a venting
system serving other appliances, the venting system may
be too large to properly vent the remaining attached appli-
ances.
8
SIDE
BOTTOM
Horizontal
PROVIDE 8" MINMUM CLEARANCE BETWEEN
CENTER ROD AND FURNACE CABINET
TO ALLOW FOR CIRCULATOR BLOWER REMOVAL
ASSURE FURNACE IS LEVEL FROM
END TO END AND HAS A SLIGHT
FORWARD TILT WITH THE FRONT
OF THE FURNACE 0"-3/4"
BELOW THE BACK OF THE FURNACE
TILT OUTWARD TO ALLOW FOR
DOOR AND CIRCULATOR BLOWER
REMOVAL
TOP