Rheem RKNL-B User Manual

USER’S INFORMATION MANUAL

FOR YOUR COMBINATION GAS HEATING/
ELECTRIC COOLING AIR CONDITIONING UNIT

!

WARNING

FIRE OR EXPLOSION HAZARD

Failure to follow safety warnings
exactly could result in serious
injury, death or property
damage.

— Do not store or use gasoline or

other flammable vapors and
liquids 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.

• Leave the building
immediately.

• 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.

— INSTALLATION AND SERVICE

MUST BE PERFORMED BY A
QUALIFIED INSTALLER,
SERVICE AGENCY OR THE GAS
SUPPLIER.

71/2 THRU 121/2 TON MODELS

ST-A1111-03

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

DO NOT DESTROY.

PLEASE READ CAREFULLY AND KEEP IN A SAFE PLACE
FOR FUTURE REFERENCE BY A SERVICEMAN OR USER

OF THIS APPLIANCE.

92-20802-102-00

INTRODUCTION

Recognize this symbol as an indication of Important Safety Information!

!

This manual contains the operating
instructions for your combination
gas/electric year-round air conditioner.
There are precautions that should be
taken to maximize satisfaction from this

ir conditioner.

a

IMPORTANT: COMPLETELY READ
ALL INSTRUCTIONS PRIOR TO
ATTEMPTING TO OPERATE OR
MAINTAIN THE PRODUCT.

his unit has been designed to give

T
you many years of efficient,
dependable comfort. With regular
maintenance, your unit will operate
satisfactorily year after year. Please
read this manual to familiarize yourself
with operation, maintenance and safety
procedures.

SAFETY

Carefully follow these safety rules:

1. The area around the unit must be
kept clear and free of all
combustible materials including
gasoline and other flammable
vapors and liquids.

2. Do not block the combustion air
inlets or the exhaust air outlet
openings.

3. Do not operate the unit without all
panels and doors securely in place.

!

WARNING

SHOULD OVERHEATING OCCUR OR
THE GAS SUPPLY FAIL TO SHUT
OFF, SHUT OFF THE MANUAL GAS
VALVE TO THE APPLIANCE BEFORE
SHUTTING OFF THE ELECTRICAL
SUPPLY. FAILURE TO DO SO CAN
RESULT IN AN EXPLOSION OR FIRE
CAUSING PROPERTY DAMAGE,
SEVERE PERSONAL INJURY OR
DEATH!

4. Any additions, changes or
conversions required in order for
the unit to satisfactorily meet the
application needs should be made
by a qualified installer, service

gency or the gas supplier, using

a
factory specified or approved parts.
Read your WARRANTY. Contact
the WARRANTOR for conversion
information. The unit was equipped
at the factory for use on NATURAL
GAS ONLY. Conversion to LP GAS
requires a special kit supplied by
the WARRANTOR.

!

WARNING

OBSTRUCTION OF THE AIR VENT
ON AN LP TANK REGULATOR CAN
CAUSE EXPLOSION OR FIRE
RESULTING IN SERIOUS PERSONAL
INJURY, DEATH OR PROPERTY
DAMAGE. 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.

5. A gas burner needs an adequate
supply of combustion and
ventilation air for proper and safe
operation. Do not block or obstruct
air openings on the unit. Do not
place anything around the unit that
could block the flow of fresh air to
the unit.

6. Do not use this unit if any part has
been under water. Immediately call
a qualified installer, service agency
or the gas supplier to inspect the
unit and to replace any part of the
control system or any gas control
that has been under water.

!

WARNING

O NOT ALLOW DEBRIS SUCH AS

D
LEAVES, GRASS, WEEDS,
SHRUBS, VINES OR SNOW
ACCUMULATE IN THE AREA
SURROUNDING THE UNIT,
PARTICULARLY IN THE VICINITY
OF THE VENT, AIR INTAKE AND
A/C CONDENSER FINS. DOING SO
CAN RESULT IN INADEQUATE

NIT PERFORMANCE OR CREATE

U
A FIRE HAZARD RESULTING IN
PROPERTY DAMAGE, PERSONAL
INJURY OR DEATH.

7. The combustion air inlet/exhaust
outlet hood and surrounding area
are very hot when operating in
heating mode. Do not allow

children to play on or around
the unit.

SYSTEM OPERATION
INFORMATION

Advice to the Customer

1. Keep the filter clean. Your system
will operate more efficiently and
provide better conditioned air.

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

3. Close doors and windows. This
will reduce the cooling load on
your system for a more
economical operation.

4. Avoid excessive use of exhaust
fans.

5. Window shades and awnings will
reduce the cooling load.

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

7. Except for the mounting platform,
keep all combustible articles three
feet from the unit and exhaust
system.

2

. Unless you plan to remove panels

8

to service the unit, do not
disconnect the main power to your
unit. This is a safety precaution for
the protection of the compressor.
Otherwise, use the thermostat
switches to shut the system off.

. For extended periods of

9

inoperation, set the thermostat
system switch in the “OFF” position
and fan switch in the “AUTO”
position.

10. Do not allow the unit to become a
play stand for children.

11. IMPORTANT: Replace all blower

doors and compartment cover after
servicing the unit. Do not operate
the unit without all panels and
doors securely in place.

12. Do not allow snow or other debris
to accumulate in the vicinity of the
appliance.

THERMOSTAT
OPERATION

For cooling, position the system switch
to

“Cool” and the fan switch to “Auto.” If
constant fan operation is desired, place
the fan switch in the “On” position.

When heating is desired, position the
system switch to “HEAT” and place the
fan switch in the “Auto” position.

During the heating season, the operation
of the warm air furnace is automatic. Your
installing dealer has provided a wall
mounted thermostat which is sensitive to
the change in the temperature of the air
moving around the thermostat. When the
temperature of the air within the heated
space surrounding the thermostat
decreases, the thermostat switch
functions to initiate the ignition sequence
and open the gas valve.

he spark ignitor located on the main

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burner tray will safely ignite the gas
(natural or LP) leaving the main burner
ports. After approximately 45 seconds of
burner operation, the blower control will
start the blower. Warm air should now
gently circulate from the supply diffusers
throughout the dwelling and return to the
furnace through return air grille(s).

When the temperature of the circulating
air reaches the temperature setting of the
thermostat, the gas valve will reclose, the
heat exchanger will cool, and the blower
will shut off after 90 seconds.

n the cooling mode, the compressor and

I
circulation air motor are energized upon a
call for cooling. When the thermostat is
satisfied or turned to the “OFF” position,
the compressor is de-energized, but the
circulation air blower continues to operate
for approximately 60 seconds to extract
the residual cooling left in the cooling coil.

We suggest that you experiment with
constant air circulation during the
heating and cooling cycles. To achieve
this style of operation, place the fan
switch on the thermostat subbase to the
“on” position. You may enjoy the comfort
associated with the continuous air
movement, constant air filtration, and the
near even temperature from floor to
ceiling.

With continuous air circulation, some
condensation on the cooling coil can
reevaporate at the end of each cycle and
cause a buildup of humidity prior to the
next cooling cycle.

SELECTION OF ROOM
TEMPERATURE

It is most important to select the

omfort temperature you desire for

c
either heating or cooling by use of the
thermostat temperature selector.

DO NOT PLAY WITH THE
THERMOSTAT. SET IT AND FORGET
IT.

If the temperature selection procedure
is new to you, ask your installing
contractor to familiarize you with the
operation of the thermostat.

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