user’s information manual
SINGLE PACKAGED
COOLING UNITS
557A
Sizes 024-060
Cancels: OM01-53
OM01-64
1/03
NOTE TO INSTALLER:
This manual should be left with the equipment
owner.
WARNING: Before performing recommended main-
tenance, be sure main power switch to unit is turned
off. Electrical shock could cause personal injury.
Model 557A Single Packaged Cooling Units Without Base Rail
Model 557A Single Package Cooling Units With Optional Base Rail
HEATING CYCLE
your dealer show you the location of your filter(s) and the pro-
cedures for removal and replacement.
If you own a packaged air conditioner that includes electric
heat as an accessory, you need only program your thermostat
for heating.
If you have any questions about the removal and/or cleaning
of your filter(s), contact your dealer for assistance.
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 envi-
ronment on colder days and nights than on moderate ones.
If grass clippings, leaves, shrubbery, and debris are kept away
from the unit, minimal care should be sufficient to keep the
system functioning properly. However, if the outdoor coil be-
comes dirty, use a brush or vacuum cleaner and soft brush
attachment to clean the exterior surface. If dirt is deep in the
coil, contact your dealer for service. The outdoor fan motor
may have to be disconnected and the top panel removed to
gain access to the coil for thorough cleaning. Do not attempt
this yourself.
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 direc-
tions. However, before performing maintenance, consider these
important safety precautions:
•
DISCONNECT ALL ELECTRICAL POWER TO THE AIR
CONDITIONER BEFORE REMOVING ACCESS PANELS TO
PERFORM SERVICE OR MAINTENANCE. 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 HAN-
DLING PARTS OR REACHING INTO THE UNIT.
UNIT SUPPORT
Your packaged unit should be maintained at a level position.
If its support should shift or settle so that the unit is no longer
level, you should correct the condition. Relevel it promptly to
assure condensate drainage out of the unit. If you notice that
water or ice collects beneath the unit, arrange for it to be drained
away from the unit.
BEFORE YOU REQUEST A ‘‘SERVICE CALL’’
BEFORE YOU CALL FOR SERVICE, CHECK FOR THESE
EASILY SOLVED PROBLEMS:
•
Check the indoor and outdoor disconnect switches. Verify
CHECK THE AIR FILTER
that circuit breakers are ON or that fuses have not blown.
A dirty air filter will cause excessive strain on the compres-
sor and blower motor. This can cause the components to over-
heat and automatically shut down. In the extreme, the com-
ponents will fail and need to be replaced. To avoid inefficient
or failed operation of your unit, CHECK THE FILTER(S) EV-
ERY 3 TO 4 WEEKS. Replace filter(s) when necessary, or clean
the filter(s) if you have the reusable type.
•
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. If you de-
sire cooling, see that the temperature control selector is set
below room temperature and the SYSTEM switch is on the
COOL or AUTO position. If you 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.
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 BE-
FORE BEING REINSTALLED. To avoid prolonged shut-
down 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. Ex-
tra filters may be purchased from your dealer.
If your comfort system still fails to operate, contact your ser-
vicing dealer for troubleshooting and repairs. Specify your ap-
parent 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 valu-
able time through knowledgeable preparation for the service
call.
PACKAGED SYSTEM: The filter(s) and filter rack for a pack-
aged system are supplied and installed by the contractor or
dealer. Typically, the filter(s) and rack are located in the return-
air duct in the unit or behind the return-air grille(s). Have
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REGULAR DEALER MAINTENANCE
FOR THE RECORD
In addition to the routine maintenance that you perform, your
home comfort system should be inspected regularly by a prop-
erly trained service technician. The inspection (preferably
each year, but at least every other year) should include the
following:
Record the model, product, and serial numbers of your new
equipment in the spaces provided below. This information,
along with the other ready-reference facts requested below,
will be necessary should you ever require information or
service.
•
Routine inspection of air filter(s). Replacement or cleaning
Installation Data
as required.
Date Installed
•
Inspection and cleaning of the blower wheel, housing,
Dealer Name
Address
City
and motor. Service should include proper lubrication of these
components.
•
Inspection and, if required, cleaning of indoor and outdoor
coils.
State
Zip
•
Inspection of the indoor coil drain pan, plus the primary
and secondary drain lines. Service should include cleaning if
required.
Telephone
Packaged System
•
A check of all electrical wiring and connections.
Outdoor Unit:
•
A check for secure physical connections of individual com-
ponents within units.
Product No.
Model No.
•
Operational check of the air conditioner system to deter-
mine actual working condition. Necessary repair and/or ad-
justment should be performed at this time.
Serial No.
Your servicing dealer may offer an economical service con-
tract that covers seasonal inspections. Ask for further
details.
Heater, if applicable:
Part No.
WARRANTIES
Kilowatt Rating
Unit 557A has a separate warranty located at the
back of this book. Be sure to read the warranty care-
fully to determine the coverage for your unit.
Copyright 2003 Bryant Air Conditioning Company
CATALOG NO. 5355-701
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