Carrier 48TM020 user manual

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48TM016-028
Combination
Heating/Cooling Units
User’s Information Manual
NOTE TO INSTALLER TO LIGHT UNIT
This manual should be left with the equipment owner.
WARNING: If the information in this man- 1. Do not turn off the electrical power to unit without
first turning off the gas supply.
ual is not followed exactly, a fire or explo-
2. Before attempting to start the gas heating section,
sion may result causing property dam-
familiarize yourself with all the procedures that must
age, personal inju

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MAINTAINING YOUR UNIT INDUCED DRAFT INTEGRATED GAS MOTOR UNIT CONTROLLER (HIDDEN) 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

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STEP 1 STEP 2 STEP 3 STEP 4 STEP 5 STEP 7 STEP 6 STEP 9 STEP 10 STEP 8 Fig. 2 — To Light Unit 3

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STEP 1 STEP 2 STEP 3 STEP 2 STEP 3 STEP 1 48TFD005-009 48TFF004-012 48TFE004-007 STEP 4 48TFD012,014 48TFL005,006 48TFE008,014 48TFM004-006 48TFN004-006 STEP 5 STEP 4 48TFD005-009 48TFF004-012 48TFE004-007 48TFD012,014 48TFL005,006 48TFE008,014 48TFM004-006 48TFN004-006 STEP 7 STEP 6 STEP 5 STEP 6 STEP 7 STEP 9 STEP 8 STEP 10 Fig. 3 — To Shut Unit Off Fig. 2 — To Light Unit 4

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seal is maintained. Contact your dealer for the required period- BURNER ACCESS HOOD PANEL (HIDDEN) ic maintenance. (OPTION) 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 require lubrication for at least 5 years of normal opera- tion. After 5 years, motor life can be extended by having the motors se

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3. Using a flashlight, carefully inspect the burner areas for 10. Inspection of all electrical wiring and components to dirt, soot, rust, or scale. assure proper connection. 11. Inspection for leaks in the refrigerant circuit. Pressure- check to determine appropriate refrigerant charge. 12. Operational check of the unit to determine working con- If dirt, soot, rust, or scale accumulations are found, call ditions. Repair or adjustment should be made at this time. your dealer and do not operate yo

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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 Pg 8 5-02 Replaces: New Tab 1a 6a