GMES96-U Installation Manual

8
Alternate Vent/Flue Location
Figure 2A
Figure 2B
Figure 2C
Recommended Installation Positions
H ORIZONTAL A PPLICATIONS & C ONSIDERATIONS
When installing a furnace horizontally, additional consideration
must be given to the following:
FURNACE SUSPENSION
If suspending the furnace from rafters or joists, use 3/8" threaded
rod and 2"x2"x1/8" angle iron as shown in the following diagram.
The length of rod will depend on the application and the clear-
ances necessary.
If the furnace is installed in a crawl space it must be suspended
from the floor joist or supported by a concrete pad. Never install
the furnace on the ground or allow it to be exposed to water.
C OMBUSTION & V ENTILATION A IR R EQUIREMENTS
T O AVOID PROPERTY DAMAGE , PERSONAL INJURY OR DEATH ,
SUFFICIENT FRESH AIR FOR PROPER COMBUSTION AND VENTILATION OF
FLUE GASES MUST BE SUPPLIED . M OST HOMES REQUIRE OUTSIDE AIR BE
SUPPLIED INTO THE FURNACE AREA .
WARNING
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
heating/cooling costs but have created a problem supplying
combustion and ventilation air for gas fired and other fuel burning
appliances. 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
occupants to gas combustion products that could include car-
bon 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 ad-
equate supply of combustion and ventilation air for all appli-
ances. Refer to the latest edition of the National Fuel Gas Code
NFPA 54/ANSI Z223.1 or applicable provisions of the local build-
ing 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 NSTALLATION P OSITIONS
This furnace may be installed in an upright position or horizon-
tal on either the left or right side panel. 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. For both upright or horizontal fur-
naces, return ductwork must be attached to the basepan (top
end of the blower compartment). NOTE: Ductwork must never
be attached to the back of the furnace. Contact your distribu-
tor for proper airflow requirements and number of required
ductwork connections. Refer to “Recommended Installation Po-
sitions” figure for appropriate installation positions, ductwork
connections, and resulting airflow arrangements.