Carrier 48TM016 Air Conditioner User Manual
Contents
1. Close the external manual gas valve Step 3 Turn off the electrical power supply to the unit Step 4 Remove the burner compartment access panel Step 5 Turm the control dial on the internal gas valve counterclockwise D to the OFF position Step 6 Replace the burner compartment access panel Step 7 If unit is being shut down because of a malfunc tion call your dealer as soon as possible If unit is being shut down because the heating season has ended restore electrical power to the unit to ensure operation of the cooling system during the cooling season Should overheating occur or the gas supply fail to shut off shut off the manual gas valve to the unit before shutting off the electrical supply Do not use this unit if any part has been under water Imme diately call a qualified service technician to inspect the unit and to replace any part of the control system and any gas control which has been under water MAINTAINING YOUR UNIT All maintenance should be handled by skilled experienced personnel Your dealer can help you establish a standard procedure For your safety keep the area around the unit clear and free of combustible materials gasoline and other flammable liq uids and vapors To assure proper functioning of the unit flow of combustion and ventilating air must not be obstructed from reaching the unit Clearance of at least 4 ft on all sides is required ROUTINE MAINTENANCE AND CARE2. 48TM016 028 Combination Heating Cooling Units User s Information Manual NOTE TO INSTALLER This manual should be left with the equipment owner WARNING If the information in this man ual is not followed exactly a fire or explo sion may result causing property dam age personal injury or loss of life 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 e Do not try to light any appliance e Do not touch any electrical switch do not use any phone in your building e Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions e If you cannot reach your gas sup plier call the fire department Installation and service must be per formed by a qualified installer service agency or the gas supplier A WARNING Improper installation adjustment alteration ser vice or maintenance can cause injury or property damage Refer to this manual For assistance or additional information consult a gualified installer service agency or the gas supplier A WARNING Before performing recommended maintenance be sure main power switch to unit is turned off and lockout tag is installed Electrical shock could cause personal injury Your combination heating cooling unit is equipped with an automatic intermittent pilot and induced draft power combus tion blower A WARN
3. FOR THE EQUIPMENT OWNER Before proceeding with those things you might want to maintain yourself please carefully consider the following A WARNING 1 TURN OFF GAS SUPPLY AND ELECTRICAL POWER TO YOUR UNIT BEFORE SERVICING OR PERFORMING MAINTENANCE Do not turn off electrical power to this unit without first turning off the gas supply When removing access doors or performing mainte nance functions inside your unit be aware of sharp sheet metal parts and screws Although special care has been taken to reduce sharp edges to a minimum be extremely careful when handling parts or reaching into the unit Air Filters Air filters should be checked at least every 3 or 4 weeks and changed or cleaned whenever they become dirty Table 1 indicates the correct filter size for your unit Re move the filter access panel to replace or inspect the filters All units have filter tracks into which the filters slide Remove the filters by pulling outward from the track See Fig 4 for filter access panel location Note the direction of flow arrows on the filter frame For horizontal supply return units the size location and number of air filters varies from Table 1 If you have difficulty in locating your air filter in the return air duct system or if you have questions concerning proper filter maintenance contact your dealer for instructions When replacing your unit filters always use the same s ze and type of filter that was ori
4. ING Pilot will light automatically Do not attempt to light by hand personal injury may result TO LIGHT UNIT A DANGER Do not turn off the electrical power to unit without first turning off the gas supply Before attempting to start the gas heating section familiarize yourself with all the procedures that must be followed Never attempt to manually light the pilot on unit with a match lighter or any other flame If the electric sparking device fails to light the pilot refer to the shutdown procedures then call your dealer as soon as possible If you do not follow these instructions exactly a fire or explosion may result causing property damage injury or loss of life See Fig 1 for location of gas valves Refer to Fig 2 while proceeding with the following steps Step 1 Set room thermostat to the lowest temperature setting and set SYSTEM switch to HEAT position Step 2 Close the external manual gas valve Step 3 Turn off the electrical supply to the unit Step 4 Remove the burner compartment access panel Step 5 Turn the control dial on the internal gas valve counterclockwise D to the OFF position and wait 5 minutes Step 6 Turn control dial on internal gas valve clock wise D to ON position Step 7 Replace the burner compartment access panel Step 8 Turn on the electrical supply to unit Step 9 Open the external gas valve Step 10 Set room thermostat sel
5. R FILTERS ACCESS PANEL 48TM025 HOOD BURNER ACCESS OPTION PANEL HIDDEN OUTDOOR AIR FILTER OUTDOOR MOTOR AND FILTER RETAINER AIR FILTERS ACCESS PANEL 481M028 Fig 4 Panel Locations Heat Exchanger To ensure dependable and efficient heating operation the heat exchanger should be checked by a qualified maintenance person before each heating season and cleaned when necessary This checkout should not be attempt ed by anyone not having the required expertise and equipment to do the job properly Checking and or cleaning the heat exchanger involves removing the gas controls assembly and the flue collector box cover and when completed reinstalling the gas controls assembly for proper operation Also the flue collector box cover must be replaced correctly so that a proper seal is maintained Contact your dealer for the required period ic maintenance Fans and Belts Periodically check the condition of fan wheels and housings and belt tension When service is nec essary call your dealer Evaporator Condenser and Combustion Fan Motors Lubrication is not recommended Bearings will not reguire lubrication for at least 5 years of normal opera tion After 5 years motor life can be extended by having the motors serviced at an authorized motor service shop Fan Shaft Bearings Lubrication is not recommend ed When service is necessary call your dealer Evaporator and Condenser Coils Cleaning of t
6. anels After performing any maintenance or service on the unit be sure all panels are securely fastened in place to prevent rain from entering unit cabinet and to prevent disruption of the correct unit airflow pattern REGULAR DEALER MAINTENANCE In addition to the type of routine maintenance you might be willing to perform your unit should be inspected regularly by a properly trained service technician An inspection preferably each year but at least every other year should include the following 1 Inspection of all flue product passages including the burners combustion baffles heat exchanger flue collec tor box and vent pipe 2 Inspection of all combustion and ventilation air passages and openings 3 Close inspection of all gas pipes leading to and inside your unit 4 Inspection and if required cleaning of the condenser and evaporator coils 5 Inspection and if required cleaning of the evaporator drain pan 6 Inspection cleaning and lubrication of blower wheel housing and motor 7 Inspection of all supply and return air ducts for leaks obstructions and insulation integrity Any problems found should be resolved at this time 8 Inspection of the unit base to ensure that no cracks gaps etc exist which may cause a hazardous condition 9 Inspection of the unit casing for signs of deterioration 10 Inspection of all electrical wiring and components to assure proper connection 11 Insp
7. ection for leaks in the refrigerant circuit Pressure check to determine appropriate refrigerant charge 12 Operational check of the unit to determine working con ditions Repair or adjustment should be made at this time 13 Your servicing dealer may offer an economical service contract that covers seasonal inspections Ask for further details Complete Service Instructions can be found in the unit Installation Start Up and Service Instructions literature BEFORE YOU CALL FOR SERVICE CHECK FOR SEVERAL EASILY SOLVED PROBLEMS If insufficient heating or cooling is suspected Check for sufficient airflow Check the air filter for dirt Check for blocked return or supply air grilles Be sure they are open and unobstructed If these checks do not reveal the cause call your servicing dealer If your unit is not operating at all check the following list for easy solutions Check to be sure that your thermostat temperature selector is set above the indoor temperature during the heating season or below the indoor temperature during the cooling season Be sure the SYSTEM switch is in the proper HEAT or COOL position and not in the OFF position Is the electrical supply switch ON Are any fuses blown or has the circuit breaker tripped During the heating season check the manual shutoff valve Is this lever parallel with the pipe indicating that the valve is open Or is the lever at a right angle indicating that
8. ector slightly above room temperature to start unit The induced draft combustion air fan will start Main burners light within 30 seconds Indoor blower will start within a few minutes of main gas ignition Step 11 Set the temperature selector on room thermostat to desired setting Manufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations Bookl1 4 PC 111 Tab 1a 6a Catalog No 534 80112 Printed in U S A Form 48TM 1SO Pg 1 5 02 Replaces New INTEGRATED GAS UNIT CONTROLLER HIDDEN INDUCED DRAFT MOTOR MN TARA SS Mini COMBUSTION MAIN BURNER FLUE BOX MAIN GAS FAN HOUSING SECTION COVER VALVE Fig 1 Typical Gas Heating Section A WARNING If the pilot fails to light the main burner fails to light or the blower fails to come on shut down gas heating section and call your dealer for service Failure to follow these require ments could result in serious personal injury TO SHUT UNIT OFF A WARNING Do not turn off the electrical power to unit without first turning off the gas supply Failure to follow these procedures can result in serious fire or personal injury See Fig 1 for location of gas valve Refer to Fig 3 while proceeding with the following steps Step 1 Set room thermostat to lowest temperature setting and set SYSTEM switch to OFF position Step 2
9. ginally supplied by the installer Units with outdoor air capability have a cleanable filter for the outdoor air This filter should be checked annually and cleaned as necessary Remove by removing screws in outdoor air filter retainer and sliding filters out of the unit A WARNING Never operate your unit without filters in place Failure to heed this warning may result in damage to the blower motor and or compressor An accumulation of dust and lint on internal parts of your unit can cause loss of efficiency and in some cases fire Table 1 Indoor Air Filter Data UNIT SIZE TYPE OF en Er QUANTITY SIZE in Fiberglass 4 20x20x2 When replacing filters always use the same type and size origi nally supplied tThe 48TM028 unit requires 2 in industrial grade filters capable of handling face velocities of up to 625 ft min such as American Air Filter no 5700 or equivalent MAIN ON OFF IEA STEP 2 STEP 3 STEP 8 STEP 10 Fig 2 To Light Unit 3 NUDO 50 60 70 80 Fig 3 To Shut Unit Off MAIN ON OFF STEP 3 MAIN STEP 7 BURNER ACCESS OPTION PANEL HIDDEN OUTDOOR AIR FILTER N RETAINER C OUTDOOR AIR MOTORS AND FILTER FILTERS ACCESS PANEL 48TMO16 020 HOOD BURNER ACCESS OPTION PANEL HIDDEN Te gt gt gt gt pa SS n S AA A OUTDOOR MOTOR AND AIR FILTER OUTDOOR FILTER RETAINER AI
10. he coils should only be done by qualified service personnel Con tact your dealer for the required annual maintenance Condensate Drain The drain pan and condensate drain line should be checked and cleaned at the same time the cooling coils are checked by your dealer Compressor All compressors are factory shipped with a normal charge of the correct type refrigeration grade oil in them and should rarely require additional oil The service tech nician must be certain the proper oil level is maintained in the compressor when it is installed and running Condenser Fan A WARNING Do not poke sticks screwdrivers or any other object into revolving fan blades Severe bodily injury may result The fan must be kept free of all obstructions to ensure proper cooling Contact your dealer for any required service Electrical Controls and Wiring Electrical controls are difficult to check without proper instrumentation therefore if there are any discrepancies in the operating cycle contact your dealer and request service Integrated Gas Controller IGC The IGC board incorporates an LED that emits a flashing light to indicate an alarm code If the furnace section will not operate and the LED is flashing a code 2 to 8 flashes in succession contact your dealer and request service See Fig 1 Refrigerant Circuit The refrigerant circuit is difficult to check for leaks without the proper equipment therefore if inade
11. quate cooling is suspected contact your dealer for service Combustion Area and Vent System The com bustion area and vent system should be visually inspected before each heating season The normal accumulation of dirt soot rust and scale can result in loss of efficiency and improp er performance if allowed to build up A CAUTION If your unit makes an especially loud noise when the main burners are ignited shut down the heating section and call your dealer See Fig 1 and proceed as follows to inspect the combustion area and power venting system of your unit 1 Turn off electrical power and gas supply to your unit 2 Remove burner compartment access panel 3 Using a flashlight carefully inspect the burner areas for dirt soot rust or scale 4 CAUTION If dirt soot rust or scale accumulations are found call your dealer and do not operate your heating section 4 When you have completed your inspection follow the start up procedures in this manual to restore your unit to operation 5 Observe unit heating operation and watch the burner flame with the access panel removed to see if it is bright blue If you observe a suspected malfunction or that the burner flames are not bright blue call your dealer See Fig 5 Some yellow flame may be present due to the pan el being removed 6 Replace burner compartment access panel BURNER FLAME TIP FLAME CORE Fig 5 Proper Flame Appearance Unit P
12. the valve is closed If closed has the gas been shut off for safety rea sons Otherwise you may open the valve and follow the start up procedures listed in this manual NOTE Before proceeding with the next check turn off the electrical power supply to the unit Remove the control access door During the heating season check the control dial on the gas valve Is it in the ON position If it is not be sure it has not been turned off for the purpose of safety If nothing else seems to be amiss follow the start up procedures in this manual If your unit still fails to operate call your servicing dealer for troubleshooting and repairs Specify the model and serial numbers of your unit Record them in this manual in the space provided If the dealer knows exactly which unit you have he may be able to offer suggestions over the phone or save valuable time through knowledgeable preparation for the service call IN CASE OF TROUBLE If after performing the above unit performance is unsatis factory shut off the unit and call your dealer Dealer s Name Telephone No Unit Model Unit Serial Number Copyright 2002 Carrier Corporation Manufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations Book 1 4 PC 111 Catalog No 534 80112 Printed in U S A Form 48TM 1SO Pg8 5 02 Replaces New Tab 1a 6a
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