Fedders F80A - Manual (Page 2)

1
MODEL F80A
INTRODUCTION
This gas fired midefficiency (non-condensing) furnace is an
up flow, counterflow or horizontal flow warm air furnace
suitable for residential and light commercial heating
applications from 35,000 to 135,000 BTU/Hr.
This appliance is a CGA / AGA design certified as a Category I
chimney vent central forced air furnace with all combustion
air supplied from the ambient air around the furnace.
Furnace models F80A50, F80A70, F80A85, F80A100,
F80A115 and F80A135 may be field converted from natural
gas to LP gas using Kit No. 30482, or may be field converted
from LP gas to natural gas using Kit No. 30551. Contact
manufacturer for conversion kit availability. *Furnace
model F80A35 cannot be converted to LP, and is not
approved for conversion.
The furnace is shipped completely assembled. Please inspect
for damage, as the furnace is unpacked.
SAFETY RULES:
1. Use this furnace only with type of gas approved for this
furnace. Refer to the furnace rating plate.
2. Install this furnace only in dry indoor locations
(protected from weather).
3. Provide adequate combustion and ventilation air to the
furnace space as specified in the Determining
Combustion Air section on page 7 of these instructions.
4. Combustion products must be discharged outdoors.
Connect this furnace to an approved vent system only, as
specified in the Furnace Venting section on page 8 of
these instructions.
5. Never test for gas leaks with an open flame. Use a
commercially available soap solution made specifically
for the detection of leaks to check all connections as
specified in the Gas Supply section on page 12 of these
instructions.
6. Always install furnace to operate within the furnace’s
intended temperature rise range with a duct system
which has an external static pressure within the
allowable range, as specified in the Furnace Sizing
section on page 3, the Ductwork section on page 6, and
the Airflow section on page 19 of these instructions.
7. When a furnace is installed so that the supply ducts carry
air circulated by the furnace to areas outside the space
containing the furnace, the return air shall also be
handled by duct(s) sealed to the furnace casing and
terminating outside the space containing the furnace.
(Furnace for heating the home located in the attached
garage, for example).
8. A gas fired furnace for installation in a residential
garage must be installed so that the burners and ignitor
are no less than 18 inches above the floor. The furnace
must be located, or protected to avoid physical damage
by vehicles.
9. THIS FURNACE IS NOT TO BE USED FOR TEMPORARY
HEATING FOR BUILDINGS UNDER CONSTRUCTION.
10. Nox Baffles are factory installed in the heat exchanger
tubes of this furnace, and must remain installed
regardless of fuel being used.
DANGER
THIS INDICATES AN IMMINENTLY HAZARDOUS
SITUATION WHICH, IF NOT AVOIDED, WILL RESULT IN
DEATH OR SERIOUS INJURY.
WARNING
THIS INDICATES A POTENTIALLY HAZARDOUS
SITUATION WHICH, IF NOT AVOIDED, COULD RESULT IN
DEATH OR SERIOUS INJURY.
CAUTION
THIS INDICATES A POTENTIALLY HAZARDOUS
SITUATION, WHICH, IF NOT AVOIDED, MAY RESULT IN
MINOR OR MODERATE INJURY.
SAFETY
Throughout the manual, symbols and words are used to
draw attention to potentially hazardous conditions.
CAUTION
MAKE SURE TO REMOVE FOAM BLOWER HOUSING
SHIPPING SUPPORTS BEFORE OPERATING FURNACE.
SHIPPING SUPPORTS ARE LOCATED ON THE BOTTOM
RIGHT AND BOTTOM LEFT SIDES OF BLOWER HOUSING.
DANGER
FIRE OR EXPLOSION HAZARD
If the information in these instructions is not followed
exactly, a fire or explosion may result, causing property
damage, personal injury or loss of life.
DANGER
DO NOT INSTALL THIS FURNACE IN A MOBILE HOME!
THIS FURNACE IS NOT APPROVED FOR INSTALLATION IN
A MOBILE HOME. DOING SO COULD CAUSE FIRE,
PROPERTY DAMAGE, PERSONAL INJURY OR LOSS OF
LIFE.
WARNING
THE FURNACE CONTAINS FOIL COVERED FIBERGLASS
INSULATION. INHALATION OF FIBERGLASS PARTICLES IS
ASSOCIATED WITH RESPIRATORY DISEASE INCLUDING
CANCER.
WARNING
THE FUEL SUPPLIER NORMALLY ODORIZES NATURAL
GAS AND PROPANE. IN SOME CASES, THE ODORANT
MAY NOT BE PERCEIVABLE. INSTALLATION OF UL AND
CUL RECOGNIZED FUEL GAS DETECTORS INSTALLED IN
ACCORDANCE WITH THEIR MANUFACTURER’S
INSTRUCTIONS IS RECOMMENDED AS AN ADDITIONAL
MARGIN OF SAFETY.