Rheem Classic Series 80 AFUE Single-Stage PSC Motor User Manual

USER’S INFORMATION MANUAL

UPFLOW, DOWNFLOW, UPFLOW/HORIZONTAL & HORIZONTAL

ONLY INDUCED DRAFT GAS FURNACES

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Recognize this symbol as an indication of Important Safety Information!

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WARNING

If the information in this manual is not followed exactly,
a fire or explosion may result, causing property
damage, personal injury or loss of life.

REDUCING HEAT LOSS UP THE

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FOR YOUR SAFETY

— Do not store or use gasoline or other

flammable vapors and liquids, or other
combustible materials in the vicinity of
this or any other appliance.

— WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electrical switch;
do not use any phone in your
building.

• Immediately call your gas supplier
from a neighbor’s phone. Follow the
gas supplier’s instructions.

• If you cannot reach your gas
supplier, call the fire department.

• Do not rely on smell alone to detect

leaks. Due to various factors, you may
not be able to smell fuel gases.

• A U. L. recognized fuel gas and CO

detector(s) are recommended in all
applications, and their installation should
be in accordance with the
manufacturer’s recommendations and/or
local laws, rules, regulations or codes.

— Installation and service must be

performed by a qualified installer,
service agency or the gas supplier.

IMPORTANT: READ THESE
INSTRUCTIONS THOROUGHLY
BEFORE ATTEMPTING TO OPERATE
THIS FURNACE.

This furnace has been designed to
give you many years of efficient,
dependable home comfort. With
regular maintenance, this furnace will
operate satisfactorily year after year.
Please read this manual to familiarize
yourself with operation, routine
maintenance schedule, and safety
procedures.

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WARNING

DEVICES ATTACHED TO THE FLUE
OR VENT FOR THE PURPOSE OF

CHIMNEY, INCLUDING FIELD­INSTALLED DRAFT INDUCERS,
HAVE NOT BEEN TESTED AND
HAVE NOT BEEN INCLUDED IN THE
DESIGN CERTIFICATION OF THIS
FURNACE. WE, THE MANUFAC­TURER, CANNOT AND WILL NOT BE
RESPONSIBLE FOR INJURY OR
DAMAGE CAUSED BY THE USE OF
SUCH UNTESTED AND/OR
UNCERTIFIED DEVICES,
ACCESSORIES OR COMPONENTS.

SAFETY

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WARNING

IMPROPER INSTALLATION,
ADJUSTMENT, ALTERATION,
SERVICE OR MAINTENANCE CAN
CAUSE PROPERTY DAMAGE,
PERSONAL INJURY OR DEATH.
FOR ASSISTANCE OR ADDITIONAL
INFORMATION CONSULT A
QUALIFIED INSTALLER, SERVICE
AGENCY OR THE GAS SUPPLIER.

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WARNING

OBSTRUCTION OF THE AIR VENT
ON AN LP (PROPANE) TANK
REGULATOR CAN CAUSE
EXPLOSION OR FIRE RESULTING IN
PROPERTY DAMAGE, SEVERE
PERSONAL INJURY OR DEATH.
YOUR GAS SUPPLIER SHOULD
PERIODICALLY INSPECT AND
CLEAN THE AIR VENT SCREEN TO
PREVENT ANY OBSTRUCTION.
KEEP PROTECTIVE REGULATOR
COVER IN PLACE, AS EXPOSURE
TO THE ELEMENTS CAN CAUSE
ICE BUILDUP AND REGULATOR
FAILURE.

CAREFULLY FOLLOW THESE
SAFETY RULES:

1. Combustible material must not be
placed on or against the furnace
jacket. The area around the
furnace must be kept clear and
free of all combustible materials
including gasoline and other
flammable vapors and liquids.

2. A furnace installed in an attic or
other insulated space must be kept
free and clear of insulating
material. Examine the furnace area
when installing the furnace or
adding more insulation. Some
materials may be combustible.

3. To prevent carbon monoxide
poisoning, all blower doors and
compartment covers must be
replaced after the furnace is
serviced. Do not operate the unit
without all panels and doors
securely in place.

4. Should overheating occur, or the
gas valve fail to shut off the gas
supply, turn off the manual gas
valve to the furnace before turning
off the electrical supply.

5. Any additions, changes or
conversions required in order for
the furnace to satisfactorily meet
the application needs should be
made by a qualified installer,
service agency or the gas supplier,
using factory specified or approved
parts. Read your WARRANTY.
Contact the WARRANTOR for
conversion information. This
furnace was equipped at the
factory for use on NATURAL GAS
ONLY. Conversion to L.P. GAS
requires a special kit supplied by
the WARRANTOR.

6. A furnace needs an adequate
supply of combustion and
ventilation air for proper and safe
operation. Do not block or obstruct
air openings on the furnace or air
openings supplying the area where

DO NOT DESTROY. PLEASE READ CAREFULLY AND KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.

92-20802-64-00

the furnace is installed. Do not
store anything around the furnace
that could block the flow of fresh air
to the unit. Your installation may
receive air from the inside heated
space., from the outside, from the

attic or crawl space. Whenever
adding insulation, be sure the air
supply openings are not covered.

7. Do not use this furnace if any part
has been under water. Immediately

SYSTEM OPERATION INFORMATION

1. Keep the air filters clean. Your
heating system will operate more
efficiently and provide better
heating, more economically.

2. Arrange your furniture and drapes
so that the supply air registers and
the return air grilles are
unobstructed.

3. Close doors and windows. This will
reduce the heating load on your
system.

4. Avoid excessive use of kitchen
exhaust fans.

5. Do not permit the heat generated
by television, lamps, or radios to
influence the thermostat operation.

6. If you desire to operate your
system with constant air
circulation, please ask advice from
a qualified installer, service agency
or the gas supplier.

During the heating season the
operation of the warm air furnace is
automatic. Your qualified installer,
service agency or the gas supplier has
provided a wall mounted thermostat
which is sensitive to the change in
temperature of the air moving around
the thermostat. Your thermostat will
have switches to select some or all of
the following functions:

HEAT - Turns heating on when
temperature drops below the desired
temperature.

COOL - Turns cooling on when
temperature rises above the desired
temperature.

AUTO - Turns cooling or heating on as
required to maintain the desired
temperature.

OFF - Turns heating and cooling
modes off. (The blower may still run in
the FAN-ON position.)

FAN-ON - Turns the blower on for
continuous operation.

FAN-AUTO - The blower cycles on and
off with cooling or heating operation.

Figure 1. Burner Compartment, showing location of Gas Controls

FOR YOUR SAFETY READ BEFORE OPERATING

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WARNING

IF YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTLY, A FIRE OR
EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL
INJURY OR LOSS OF LIFE.

NOTE: Read and follow the Safety Information, Operating Instructions and
Instructions To Turn Off Gas To Appliance located on the furnace. This label
will have specific information regarding the furnace and its gas controls.

TYPICAL GAS CONTROL VALVE

A. Gas valves and controls vary in

appearance, but two basic types are
standard.

STANDING PILOT

The gas control lever or knob has
“ON,” “OFF,” “SET” and “PILOT”
positions (see Figure 2A). This
furnace has a pilot burner which
must be lighted manually (by
hand). When lighting the pilot
burner, follow the instructions
exactly. (See Lighting Instructions.)

ELECTRIC IGNITION

The gas control lever or knob has
“ON” and “OFF” positions only (see

call a qualified installer, service
agency or the gas supplier to
inspect the furnace and to replace
any part of the control system and
any gas control which has been
under water.

Figure 2B). This furnace is
equipped with an ignition device
which automatically lights the
burners. Do not try to light the
burners by hand.

B. BEFORE OPERATING smell all

around the appliance area for gas. Be
sure to smell next to the floor because
some gas is heavier than air and will
settle on the floor.

WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance

• Do not touch any electric switch; do
not use any phone in your building.

• Immediately call your gas supplier
from a neighbor’s phone. Follow the
gas supplier’s instructions.

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