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48TF004-014
48TM004-014
Single-Package Rooftop Heating/
Cooling Units
User’s Information Manual
NOTE TO INSTALLER TO LIGHT UNIT
This manual should be left with the equipment owner.
1. Do not turn off the electrical power to unit without
WARNING: If the information in this manual is
first turning off the gas supply.
not followed exactly, a fire or explosion may
2. Before attempting to start the gas heating section, fa-
result causing property damage, personal
miliarize yourself with all the proce
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Step 4 — Remove the burner access panel. Step 5 — Move the control on the gas valve to the OFF position. Step 6 — Replace the burner 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, GAS VALVE shut of
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MAIN ON OFF STEP 1 STEP 3 STEP 2 TWO-STAGE VALVE ONE-STAGE VALVE STEP 4 ONE STAGE TWO STAGE 48TFD,TMD005-009 48TFF,TMF004-006 (3 phase) 48TFE,TME004-007 48TFD,TMD012, 014 48TFF,TMF004-006 (single phase) 48TFE,TME008-014 48TFG,TMG005,006 48TFF,TMF007-014 ONE-STAGE VALVE TWO-STAGE VALVE 48TFH,TMH004-006 48TFK,TMK004-006 48TFL,TML005,006 48TFM,TMM004-006 48TFN,TMN004-006 STEP 5 ONE STAGE TWO STAGE 48TFD,TMD005-009 48TFF,TMF004-006 (3 phase) 48TFE,TME004-007 48TFD,TMD012, 014 48TFF,TMF004-006 (singl
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MAIN ON OFF STEP 1 STEP 2 STEP 3 STEP 2 STEP 1 STEP 3 TWO-STAGE VALVE ONE-STAGE VALVE 48TFD005-009 48TFF004-012 48TFE004-007 STEP 4 48TFD012,014 48TFL005,006 48TFE008,014 48TFM004-006 48TFN004-006 STEP 5 ONE STAGE TWO STAGE 48TFD,TMD005-009 48TFF,TMF004-006 (3 phase) 48TFE,TME004-007 48TFD,TMD012, 014 STEP 4 48TFF,TMF004-006 (single phase) 48TFE,TME008-014 48TFG,TMG005,006 48TFF,TMF007-014 48TFH,TMH004-006 48TFK,TMK004-006 48TFL,TML005,006 48TFM,TMM004-006 48TFN,TMN004-006 STEP 5 48TFD005-009 48
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Air Filter(s) — Air filter(s) should be checked at least ev- Heat Exchanger — To ensure dependable and efficient ery 3 or 4 weeks and changed or cleaned when necessary. heating operation, the heat exchanger should be checked by a Table 1 indicates the correct filter size for your unit. See Fig. 4 qualified maintenance person before each heating season, and for filter access door location. cleaned when necessary. This checkout should not be attempt- ed by anyone not having the required expertise
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Combustion Area and Vent System — The com- Unit Panels — After performing any maintenance or bustion area and vent system should be visually inspected service on the unit, be sure all panels are securely fastened in before each heating season. The normal accumulation of dirt, place to prevent rain from entering unit cabinet and to prevent soot, rust, and scale can result in loss of efficiency and improp- disruption of the correct unit airflow pattern. er performance if allowed to build up. REGUL
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NOTE: Before proceeding with the next check, turn OFF the BEFORE YOU CALL FOR SERVICE, CHECK electrical power supply to the unit. Remove the control access FOR PROBLEMS THAT CAN BE door. EASILY SOLVED ( ) During the heating season, check the control dial on the If insufficient heating or cooling is suspected: gas valve. Is it in the ON position? If it is not, be sure it has not ( ) Check for sufficient airflow. Check the air filter for dirt. been turned off for safety reasons. If no safety
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CARRIER CORPORATION ® IF YOUR UNIT DOES NOT WORK, FOLLOW THESE STEPS IN ORDER: FIRST: Contact the installer. You may find his name on the product or in your Homeowner's Packet. If his name is not known, call your builder if yours is a new residence. SECOND: Contact the nearest CARRIER distributor. (See telephone yellow pages.) THIRD: Contact: CARRIER CORPORATION Consumer Relations Department P.O. Box 4808 Syracuse, New York 13221 Phone: 1-800-CARRIER (227-7437) Model No. Unit Serial No. Date of
