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Packaged Air Conditioner
Owner's Guide to Operating and
Maintaining Your Cooling Unit
ELECTRICAL SHOCK HAZARD.
Failure to follow this warning can result in
property damage, personal injury, and/or death.
Disconnect power at fuse box or service panel
before performing recommended maintenance.
This manual should be left with the owner.
Printed in U.S.A. 10/18/05 426 02 1001 00
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EFFICIENT COOLING
Your new unit is among the most energy-efficient and
reliable air conditioning products available today. To
assure its dependability, spend just a few minutes with this
booklet now. Learn about the operation of your air
conditioner and the small amount of maintenance it takes
to keep it operating at its peak efficiency.
With minimal care, your air conditioner will provide you and
our family with satisfying home comfort - both now and for
ears to come.
Minimum Clearances and Access Panels
Overhang
Evaporator 48" Minimum Overhang Clearance
Access Panel
J
10"around
_" condenser
coilarea
Blower/Ele_rical
Access Panel
,,_ Cover Plate
minimum clearance between the outdoor unit and tall
grass, vines, shrubs, et cetera.
• Your multipurpose indoor thermostat is the control center
for your air conditioning system. You should familiarize
yourself with its proper operation. Attempting to control
the system by other means - for instance, switching the
electrical supply power ON and OFF - may cause
damage to the unit.
• Thermostat "jiggling" causes rapid-cycling, which is
potentially damaging to the compressor. Do not move the
temperature selector on the thermostat for any reason for
at least 5 minutes after the compressor has shut off.
• You may find that you can maintain greater personal
comfort by running the fan continuously. Air pockets can
form due to the structure of the building, placement of
registers, et cetera. These air pockets may be too cool or
warm for your liking. Continuous fan operation minimizes
any temperature differences. Also, systems equipped
with electronic air cleaners and/or humidifiers offer the
added benefits of having the air continuously cleaned
year-round, and humidified during the winter season.
• Your air conditioner will remove humidity from your home
during the cooling season. After a few minutes of
operation, you should be able to see water trickle from the
condensate drain of the cooling coil. Check this
occasionally to be sure the drain system is not clogged.
Of course, don't expect to see much drainage if you live in
a very dry environment.
OPERATING YOUR UNIT
IMPORTANT FACTS
To better protect your investment and to eliminate
unnecessary service calls, familiarize yourself with the
following facts:
Improper installation, adjustment, alteration,
service, maintenance or use can cause fire,
electrical shock or other conditions which may
cause personal injury or property damage.
Refer to this manual. For assistance or additional
information consult a qualified installer, service
agency, distributor, or branch. The qualified
installer or agency must use only factory
authorized kits or accessories when modifying
this product.
• Your air conditioning system should never be operated
without a clean air filter properly installed. Plan to inspect
the filter periodically. A clogged air filter will increase
operating costs and shorten the life of the unit.
• Supply-air and return-air registers should not be
blocked. Drapes, furniture, and toys are some of the
items commonly found obstructing grilles. Restricted
airflow lessens the unit's efficiency and life span.
• Outdoor units must have unrestricted airflow. Do not
cover the unit, lean anything against it, or stand upon it.
Do not allow grass clippings, leaves, or other debris to
accumulate around or on top of the unit. Maintain a 10-in.
THERMOSTAT
The operation of your air conditioning system is controlled
by the indoor thermostat. You simply adjust the thermostat
and it maintains the indoor temperature at the level you
select. Most thermostats for air conditioning systems have
three controls. These are the temperature control selector,
FAN switch, and SYSTEM switch.
The temperature control selector is a dial or button(s) that
allows you to establish the degree of temperature that you
wish to maintain for your personal comfort. Some
thermostats possess two temperature control selectors:
one for setting the temperature desired during the cooling
cycle, and one to set the heating operation temperature (if
the accessory electric heater is used).
The FAN switch offers two options for controlling the
blower: AUTO and ON. When set to AUTO, the blower will
run during the time the air conditioner is operating. When
the FAN switch is set at the ON position, the blower will run
continuously.
Typically, the SYSTEM switch on your thermostat offers the
following selections: COOL, OFF, and HEAT. Your
thermostat may also have a fourth selection, AUTO. The
air conditioner will not operate when the SYSTEM switch is
set at the OFF position. With the SYSTEM switch set at
COOL, the cooling section of your comfort system will
operate when the indoor temperature rises above the level
that you wish to maintain. With the SYSTEM switch set at
the HEAT position, the accessory electric heater will
operate automatically whenever the indoor temperature
falls below the level that you have selected.
The AUTO selection found on some thermostats provides
for automatic changeover between cooling and heating
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cycles.WiththeSYSTEMswitchsetintheAUTOposition,
thecoolingmodeisactivatedwhentheindoortemperature
risesabovethethermostatcoolingtemperaturesetting,or
the heatingmodewill be activatedwhenthe indoor
temperaturedropsbelowthethermostatsettingforthe
heatingcycle.
Sequence of Operation
Cooling Mode:
(1)On a call for cooling - PAM324 to PAM342 units.
With a call for cooling (Y), the indoor fan energizes
immediately whereas the contactor energizes after a 5
minute time delay (incase of an initial start up) starting the
compressor and the outdoor fan motor.
(2)When the cooling setpoint has been satisfied
When the cooling demand is met, (Y) de-energizes,
shutting off the compressor, indoor fan and the outdoor
fan.
(1)On a call for cooling - PAM348 and PAM360 units.
These units utilize a 2 stage indoor thermostat. With a
first stage call for cooling (Y1), the indoor fan (low stage)
energizes immediately whereas the contactor energizes
after a 5 minute time delay (incase of an initial start up)
starting the compressor (low stage) and the outdoor fan
motor. If the low stage operation cannot satisfy the
cooling demand, the second stage cooling (Y2)
energizes switching the compressor into high stage
cooling through energizing an internal solenoid valve
inside the scroll compressor and switching the indoor fan
into high stage. When second stage cooling is satisfied,
Y2 de-energizes switching the compressor and the
indoor fan into low stage cooling. When the low stage
cooling demand is met, Y1 de-energizes shutting off the
compressor, indoor fan and the outdoor fan.
(2)When the cooling setpoint has been satisfied
When second stage cooling issatisfied, Y2 de-energizes
switching the compressor and the indoor fan into low
stage cooling. When the low stage cooling demand is
met, Y1 de-energizes shutting offthe compressor, indoor
fan and the outdoor fan.
Cooling Cycle - When operating in the cooling cycle, your
air conditioner will run until the indoor temperature is
lowered to the level you have selected. On extremely hot
days, your air conditioner will run for longer periods at a
time and have shorter "off" periods than on moderate days.
The following are typical conditions that add extra heat
and!or humidity to your home. Your air conditioner will work
longer to keep your home comfortable under these
conditions:
• Entrance doors are frequently opened and closed
• Laundry appliances are being operated
• A shower is running
• More than the usual number of people are present in the
home
• More than the normal number of electric lights are in use
• Drapes are open on the sunny side of the home
Heating Cycle - If you own a packaged air conditioner that
includes electric heat as an accessory, you need to set your
thermostat for heating when it is desired.
With the SYSTEM switch of your indoor thermostat set to
the HEAT position, the heating section of your home
comfort system will operate until room temperature is
raised to the level you have selected. Of course, the
heating unit will have to operate for longer periods to
maintain a comfortable environment on colder days and
nights than on moderate ones.
PERFORMING ROUTINE MAINTENANCE
With the proper maintenance and care, your air conditioner
will operate economically and dependably. Maintenance
can be accomplished easily by referring to the following
directions. However, before performing maintenance
consider these important safety precautions:
ELECTRICAL SHOCK HAZARD.
Failure to follow this warning can result in property
damage, personal injury, and/or death.
Use extreme care during all of the following checks
and procedures.
Make sure electric power is turned OFF as
instructed in appropriate steps.
• DISCONNECT ALL ELECTRICAL POWER TO THE AIR
CONDITIONER BEFORE PERFORMING SERVICE OR
MAINTENANCE. DO NOT REMOVEACCESS PANELS.
For a packaged air conditioner unit, disconnect power to
the unit and any supplemental electric heaters.
NOTE: THERE MAY BE MORE THAN ONE ELECTRICAL
DISCONNECT SWITCH.
• ALTHOUGH SPECIAL CARE HAS BEEN TAKEN TO
MINIMIZE SHARP EDGES IN THE CONSTRUCTION
OF YOUR UNIT, BE EXTREMELY CAREFUL WHEN
HANDLING PARTS. DO NOT REACH INTO THE UNIT.
Check the Air Filter - A dirty air filter will cause excessive
strain on the compressor and blower motor. This can cause
the components to overheat and automatically shut down.
In the extreme, the components will fail and need to be
replaced. To avoid inefficient or failed operation of your
unit, CHECK THE FILTER(S) EVERY 3 TO 4 WEEKS.
Replace filter(s) when necessary, or clean the filter(s) if you
have the reusable type.
Disposable filters should be replaced by similar, new filters
of the same dimensions.
Reusable, permanent filters should be washed in a solution
of cold water and mild detergent, then rinsed and
thoroughly dried. THE FILTER MUST BE COMPLETELY
DRY BEFORE BEING REINSTALLED. Toavoid prolonged
shutdown of your unit while a filter is drying, you should
have an extra filter on hand. This would allow you to rotate
between the two with minimal downtime for your comfort
system. Extra filters may be purchased from your dealer.
The filter(s) and filter rack for a packaged system are
supplied and installed by the contractor or dealer. Typically,
the filter(s) and rack are located in the return-air duct at the
outdoor unit or behind the return-air grille(s). Have your
dealer show you the location of your filter(s) and the
procedures for removal and replacement.
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If you haveany questionsaboutthe removaland/or
cleaningofyourfilter(s),contactyourdealerforassistance.
Ifgrassclippings,leaves,shrubbery,anddebrisarekept
awayfromtheunit,minimalcareshouldbesufficientto
keepthe systemfunctioningproperly.However,if the
outdoorcoilbecomesdirty,useabrushorvacuumcleaner
andsoftbrushattachmenttocleantheexteriorsurface,tf
dirtisdeepinthecoil,contactyourdealerforservice.The
outdoorfanmotormayhavetobedisconnectedandthe
toppanelremovedto gainaccessto thecoilforthorough
cleaning.Donotattemptthisyourself.
UnitSupport- Yourpackagedunitshouldbemaintained
atalevelposition.Ifitssupportshouldshiftorsettlesothat
theunitisnolongerlevel,youshouldcorrectthecondition.
Relevelitpromptlytoassurecondensatedrainageoutof
theunit.Ifyounoticethatwateroricecollectsbeneaththe
unit,arrangeforittobedrainedawayfromtheunit.
BEFORE YOU CALL FOR SERVICE, CHECK
FOR THESE EASILY SOLVED PROBLEMS
Check the indoor and outdoor disconnect switches. Verify
that circuit breakers are ON.
Check for sufficient airflow. Check the air filter(s) for any
accumulations of dirt. Check for blocked return-air or
supply-air grilles. Be sure grilles are open and
unobstructed.
Check the settings on your indoor thermostat. Ifyou desire
cooling, see that the temperature control selector is set
below room temperature and the SYSTEM switch is on the
COOL or AUTO position. Ifyou require warmth, be sure the
temperature control selector is set above room
temperature and the SYSTEM switch is at HEAT or AUTO.
The FAN switch should be set at ON for continuous blower
operation or AUTO if you wish the blower to function only
while the unit is operating.
If your comfort system still fails to operate, contact your
servicing dealer for troubleshooting and repairs. Specify
your apparent problem, and state the model and serial
numbers of your equipment. (You should have them
recorded on page 4 of this booklet.) With this information,
your dealer may be able to offer helpful suggestions over
the phone, or save valuable time through knowledgeable
preparation for the service call.
REGULAR DEALER MAINTENANCE
In addition to the routine maintenance that you perform,
your home comfort system should be inspected annually
by a properly trained service technician. The inspection
should include the following:
• Routine inspection of air filter(s). Replacement or
cleaning as required.
• Inspection and cleaning of the blower wheel, housing,
and motor.
• Inspection and, if required, cleaning of evaporator and
condenser coils.
• Inspection of the coil drain pan, plus the drain lines.
Service should include cleaning if required.
• A check of all electrical wiring and connections.
• A check for secure physical connections of individual
components within units.
• Operational check of the air conditioner system to
determine actual working condition. Necessary repair
and/or adjustment should be performed at this time.
WARRANTY
The unit warranty is in the installer's literature pack. Ensure
that the installer leaves the warranty and literature pack
with you.
Date Installed
Dealer Name
Address
City.
State
Telephone
Product No.
Model No.
Serial No.
Heater, if applicable:
Part No.
Kilowatt Rating
INSTALLATION DATA
Zip.
UNIT DATA
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