Clearances And Accessibility - Goodman xMEC96 Series User Manual

• Ensure upflow or horizontal furnaces are not installed directly on carpeting, or any other combustible material. The only
combustible material allowed is wood.
• Exposure to contaminated combustion air will result in safety and performance-related problems. Do not install the furnace
where the combustion air is exposed to the following substances:
permanent wave solutions
carbon tetrachloride
deicing salts or chemicals
cleaning solutions (such as perchloroethylene)
paint removers
cements and glues
• 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 furnace from airborne contaminants. To ensure that the enclosed non-direct vent furnace has
an adequate supply of combustion air, vent from a nearby uncontaminated room or from outdoors. Refer to the Combustion
and Ventilation Air Requirements for details.
• If the furnace is used in connection with a cooling coil unit, install the furnace upstream or in parallel with the cooling coil
unit. Premature heat exchanger failure will result if the cooling unit is placed ahead of the furnace.
For vertical applications, the minimum cooling coil width shall not be less than furnace width minus 1".
For upflow applications, the front of the coil and furnace must face the same direction.
• 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, ensure the access doors are not on the "up/top" or "down/bottom" side of the
furnace.
• Do not connect this furnace to a chimney flue that serves a separate appliance designed to burn solid fuel.
C A
LEARANCES AND CCESSIBILITY
NOTES:
• For servicing or cleaning, a 24" front clearance is required.
• Unit connections (electrical, flue and drain) may necessitate greater clearances than the minimum clearances listed
above.
• In all cases, accessibility clearance must take
precedence over clearances from the enclosure where
accessibility clearances are greater.
Installations must adhere to the clearances to combustible mate-
rials to which this furnace has been design certified. The mini-
mum clearance information for this furnace is provided on the
unit's clearance label. These clearances must be permanently main-
tained. Clearances must also accommodate an installation's gas,
electrical, and drain trap and drain line connections. If the alter-
nate combustion air intake or vent/flue connections are used additional clearance must be provided to accommodate these connec-
tions. Refer to Vent/Flue Pipe and Combustion Air Pipe for details.
NOTE: In addition to the required clearances to combustible materials, a minimum of 24 inches service clearance must be available
in front of the unit.
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 applicable to your model 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.
chlorinated waxes or cleaners
water softening chemicals
halogen type refrigerants
varnishes
antistatic fabric softeners for clothes dryers
POSITION*
Upflow
Horizontal
C = If placed on combustible floor, floor MUST be wood only.
TOP
BOTTOM
Figure 1
7
chlorine-based
swimming pool chemicals
printing inks
hydrochloric acid
*MEC96 M INIMUM CLEARANCES TO COM BUSTIBLE MATERIALS
(INCHES)
SIDES REAR FRONT
0" 0"
6" 0"
TOP
BOTTOM
BOTTOM FLUE TOP
3" C 0" 1"
3" C 0" 6"