Carrier 50SX Air Conditioner User Manual
Contents
1. WARRANTIES Unit 50SX 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 Carrier Corporation FOR THE RECORD 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 serv ice Installation Data Date Installed Dealer Name Address City State Zip Telephone Unit Data Product No Model No Serial No Heater if applicable Part No Kilowatt Rating Manufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations Book Catalog No 535 00089 Printed in U S A 4 PC 101 Tab jib 6b Form OM50 38 Pg 4 1 03 Replaces 50SS SX 2SO2. clearance between the outdoor unit and tall grass vines shrubs et cetera e Your multipurpose indoor thermostat is the control center for your air conditioning system You should familiarize your self with its proper operation Attempting to control the sys tem by other means for instance switching the electrical supply power ON and OFF may cause damage to the unit e Thermostat jiggling causes rapid cycling which is po tentially damaging to the compressor Do not move the tem perature selector on the thermostat for any reason for at least 5 minutes after the compressor has shut off e You may find that you can maintain greater personal com fort 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 elec tronic air cleaners and or humidifiers offer the added ben efits of having the air continuously cleaned year round and humidified during the winter season e 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 i
3. 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 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 that circuit breakers are ON or that fuses have not blown 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 desire cooling see that the temperature control selector is set be low 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 o
4. 50SX Single Packaged Cooling Units le O OD o amp 59 wo o5 rt O oD C amp C Oc Dw O g Io gt aa eal z E DN Z eal Z A WARNING Before performing recommended maintenance be sure This manual should be left with the equipment main power switch to unti is turned off Electrical shock could cause personal injury a ANN Models 50SX Single Packaged Cooling Units Without Base Rail Models 50SX Single Packaged Cooling Units With Optional Base Rail Manufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations Pg 1 1 03 Replaces 50SS SX 2SO Form OM50 38 Printed in U S A Catalog No 535 00089 PC 101 4 1b 6b Book 1 Tab WELCOME TO EFFICIENT COOLING COMFORT Congratulations on your excellent choice and sound invest ment in home cooling comfort Your new air conditioner represents both the latest in engi neering development and the culmination of many years of experience from one of the most reputable manufacturers of comfort systems Your new unit is among the most energy efficient and reli able 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 op
5. erating at its peak efficiency With minimal care your air conditioner will provide you and your family with satisfying home comfort both now and for years to come IMPORTANT FACTS To better protect your investment and to eliminate unnec essary service calls familiarize yourself with the following facts A WARNING Improper installation adjustment alteration service main tenance or use can cause explosion 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 in staller or agency must use only factory authorized kits or accessories when modifying this product e Your air conditioning system should never be operated with out 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 e 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 e 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 12 in minimum
6. hat includes electric heat as an accessory you need only program your thermo stat for heating With the SYSTEM switch of your indoor thermostat set to the HEAT position the heating section of your home com fort 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 direc tions However before performing maintenance consider these important safety precautions e DISCONNECT ALL ELECTRICAL POWER TO THE AIR CONDITIONER BEFORE REMOVING ACCESS PAN ELS 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 ELECTRI CAL DISCONNECT SWITCH e 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 MAIN ON CHECK THE AIR FILTER 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 pone
7. n a very dry environment OPERATING YOUR AIR CONDITIONER 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 se lect 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 allow you to establish the degree of temperature that you wish to maintain for your personal comfort Some thermostats pos sess 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 Typical settings are 78 degrees Fahrenheit for cooling and 68 degrees for heating The FAN switch offers two options for controlling the blower AUTO and ON When set to AUTO the blower will run dur ing the time the air conditioner is operating When the FAN switch is set at the ON position the blower will run con tinuously Typically the SYSTEM switch on your thermostat offers the following selections COOL OFF and HEAT Your thermo stat may also have a fourth selection AUTO The air con ditioner 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 tempe
8. nly while the unit is operating If your comfort system still fails to operate contact your ser vicing 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 regularly by a prop erly trained service technician The inspection preferably each year but at least every other year should include the following e Routine inspection of air filter s Replacement or clean ing as required e Inspection and cleaning of the blower wheel housing and motor Service should include proper lubrication of these com ponents e Inspection and if required cleaning of indoor and out door coils e Inspection of the indoor coil drain pan plus the primary and secondary drain lines Service should include cleaning if required e A check of all electrical wiring and connections e A check for secure physical connections of individual com ponents within units e 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
9. nts 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 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 be tween the two with minimal downtime for your comfort sys tem Extra filters may be purchased from your dealer The filter s and filter rack for a packaged system are sup plied and installed by the contractor or dealer Typically the filter s and rack are located in the return air duct at the out door 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 If you have any questions about the removal and or cleaning of your filter s contact your dealer for assistance 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 becomes dirty use a brush or vacuum cleaner and soft brush attachment
10. rature rises above the level that you wish to maintain With the SYSTEM switch set at the HEAT posi tion 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 cycles With the SYSTEM switch set in the AUTO position the cool ing mode is activated when the indoor temperature rises above the thermostat cooling temperature setting or the heating mode will be activated when the indoor temperature drops below the thermostat setting for the heating cycle 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 condi tioner 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 e Entrance doors are frequently opened and closed e Laundry appliances are being operated e A shower is running e More than the usual number of people are present in the home e More than the normal number of electric lights are in use e Drapes are open on the sunny side of the home HEATING CYCLE If you own a packaged air conditioner t
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