4
Air Requirements
WARNING
PERSONAL INJURY HAZARD
To avoid death, personal injury or property
damage, enough fresh air for proper com-
bustion and ventilation of flue gases must
be provided to this furnace. Most homes
require outside air to be supplied into the
furnace area.
Improved construction and additional insulation in homes
have reduced the heat loss and made these homes much
tighter around doors and windows so that air infiltration is
minimal. This creates a problem to supply ventilation and/or
combustion air for gas fired or other fuel burning appliances.
Any use of appliances that pull air out of the house (clothes
dryers, exhaust fans, fireplaces, etc.) increases this problem
and appliances could be starving for air.
If fuel-burning appliances are starved for air, the flue gases
which these appliances produce as they operate may not
vent outdoors properly, but remain in the home instead.
These flue gases may include carbon monoxide.
WARNING
PERSONAL INJURY HAZARD
Death or personal injury from asphyxiation
can result from exposure to carbon monox-
ide.
WARNING
PERSONAL INJURY HAZARD
This product contains or produces a chemi-
cal or chemicals which may cause serious
illness or death and which are known to the
State of California to cause cancer, birth
defects or other reproductive harm.
Carbon monoxide or “CO” is a colorless and odorless gas
produced when fuel is not burned completely or when the
flame does not receive sufficient oxygen.
Be aware of these air starvation signals which indicate
conditions that may result in carbon monoxide or that
carbon monoxide may be present:
1. Headaches-Nausea-Dizziness.
2. Excessive humidity-heavily frosted windows or a moist
“clammy” feeling in the home.
3. Smoke from a fireplace won’t draw up the chimney.
4. Flue gases won’t draw up the appliance vent pipe.
WARNING
It is vitally important the furnace have proper
venting. GUD model furnaces are direct vent
appliances and must never be common
vented with another gas fired appliance. Any
alteration to any venting system must be in
accordance with local and national codes,
and the manufacturer's instructions.
Combustion Air (GUC, GUX and GUD - One Pipe
System)
Normally the air for combustion and ventilation can be
obtained from the surrounding unconfined space or louvered
closet door.
• When a furnace is installed in a closet and the closet door
is louvered DO NOT OBSTRUCT LOUVERS. Louvers
must be open and clear to provide combustion air to the
furnace.
• When the furnace is installed in a confined space within
a home and the air for combustion and ventilation enters
the space through ducts from the outside...be sure to
check the entering and outlet (grilled) openings so that
they are always clear and clean.
IMPORTANT NOTE: Do not partition off a small area around
the furnace including a non louvered door. This could ob-
struct the combustion air from reaching the furnace.
Combustion Air (GUD - Two Pipe System)
NOTE: To insure proper operation of the furnace, both
combustion air and flue pipes must never become ob-
structed.
NOTE: The air for combustion and ventilation must not come
from a corrosive atmosphere.
WARNING
To prevent possible death or personal injury
due to asphyxiation, Amana Condensing Gas
Fired Warm Air Furnaces must be Category
IV vented.
Category IV venting must be gas and water tight. For informa-
tion on Category IV venting, refer to the installation instruc-
tions available from the installing dealer, distributor, or di-
rectly from Amana.
The vent system must slope toward the furnace for drainage
of condensate. Provision must be made to drain the conden-
sate and protect the condensate drain trap and drain line
from freezing conditions.
