Combustion; Installation Positions; Horizontal Applications & Considerations; Equirements - Goodman xMEC96 Series User Manual

C & V
OMBUSTION ENTILATION
Improved construction and additional insulation in buildings have
reduced heat loss by reducing air infiltration and escape around
doors and windows. These changes have helped in reducing heat-
ing/cooling costs but have created a problem supplying combus-
tion and ventilation air for gas fired and other fuel burning appli-
ances. Appliances that pull air out of the house (clothes dryers,
exhaust fans, fireplaces, etc.) increase the problem by starving appliances for air.
House depressurization can cause back drafting or improper combustion of gas-fired appliances, thereby exposing building occu-
pants to gas combustion products that could include carbon monoxide.
If this furnace is to be installed in the same space with other gas appliances, such as a water heater, ensure there is an adequate
supply of combustion and ventilation air for the other appliances. Refer to the latest edition of the National Fuel Gas Code NFPA
54/ANSI Z223.1 or CAN/CSA B149.1-05 Installation Codes or applicable provisions of the local building codes for determining the
combustion air requirements for the appliances.
Most homes will require outside air be supplied to the furnace area by means of ventilation grilles or ducts connecting directly to
the outdoors or spaces open to the outdoors such as attics or crawl spaces.
I P
NSTALLATION OSITIONS
Figure 2A
*MEC96 models may be installed upflow or horizontally with left or right side down. Do not install this furnace on its back. For
upright upflow furnaces, return air ductwork may be attached to the side panel(s) and/or basepan. For horizontal upflow
furnaces, return air ductwork must be attached to the basepan. NOTE: Ductwork must never be attached to the back of the
furnace. Contact your distributor for proper airflow requirements and number of required ductwork connections. Refer to
"Recommended Installation Positions" figure for appropriate installation positions, ductwork connections, and resulting airflow
arrangements.
H A
ORIZONTAL PPLICATIONS
When installing a furnace horizontally, additional consideration must be given to the following:
A R
IR

EQUIREMENTS

Figure 2B
Recommended Installation Positions
& C
ONSIDERATIONS
T
O AVOID PROPERTY DAMAGE
SUFFICIENT FRESH AIR FOR PROPER COMBUSTION AND VENTILATION OF
FLUE GASES MUST BE SUPPLIED
SUPPLIED INTO THE FURNACE AREA
9
WARNING
, ,
PERSONAL INJURY OR DEATH
. M
OST HOMES REQUIRE OUTSIDE AIR BE
.
Figure 2C