From inside (document excerpt):
58CLR Low Boy Oil Furnace Input Capacities: 70,000 thru 154,000 Btuh Series 120 Product Data 58CLR FEATURES/BENEFITS Riello Oil Burner and UTEC Controls S High quality Riello oil burner allows safe and efficient combustion of oil. S UTEC ignition control and fan timer board provide reliable operation and easy connection of thermostat and accessory wiring. Casing S Made of 18–gauge painted steel for years of durability.
S Cabinet features an insulated enclosure for the burner and controls. Insulation and Soundproofing S Unique sound trap along with insulated walls efficiently capture most combustion noise and vibration make this unit one of the quietest on the market. A06626 THE LATEST IN OIL FURNACE TECHNOLOGY The model 58CLR combines high efficiency and quiet operation with oil heating technology. The 58CLR is available in 2 sizes. Each size can be fired at 3 different rates by a simple nozzle change. Unit 58CLR105 covers input ranges from 70,000 to 105,000 Btuh. Unit 58CLR120 covers input ranges from 119,000 to 154,000 Btuh. The furnace design is a low-boy style for upflow applications where overhead space is limited. The components of the 58CLR are the finest in the industry. The unit uses a Riello oil burner with a UTEC fan timer board. The 58CLR is a standard part of a quality-built home. This high efficiency furnace will provide years of quality service to home builders and homeowners alike. As with other Carrier furnaces, this model is designed to work as part of a total home comfort system which includes elements for cooling, air cleaning, humidification, ventilation, and zoning. S Flue silence baffle ensures quiet operation. Combustion Products Venting S Rear flue outlet. S Unit may be vented using Type L vent material and a factory-built metal or masonry chimney. S Unit may also be sidewall vented with an approved power venter. Adjustable Blower Speed S 4–speed blower for precise airflow selection of heating or cooling operation. Constant Low-Speed Blower Switch S Allows continual low–speed air circulation through the home to efficiency. maximize comfort while maintaining S Air is constantly filtered and stagnant air is avoided. S This option can be controlled by the homeowner. Combustion Chamber/Heat Exchanger S Composed mainly of stainless and aluminized steel, the unique combination combustion chamber/heat exchanger resists corrosion, overheating, and deterioration. S Heat transfer properties make it highly efficient. S All seams are tightly welded for leak–free operation. Certifications S 58CLR unit is CSA certified. S The efficiency is GAMA efficiency rating certified. 1 UNUSEDLEADS S 2 E A C C O N T C O O L H E A T N 6 7 C ON 1 2 58CLR G W R Y C A96369 A96370 A06115 COMBUSTION CHAMBER/ HEAT EXCHANGER CONTROL CENTER OIL BURNER MODEL NUMBER NOMENCLATURE 58CLR 105 120 12 Riello Burner Low Boy Oil Furnace Series Cooling Size Airflow (Nominal 400 CFM per 12,000 Btuh Cooling) 12 1200 CFM Input Capacity 105 70,000 Btuh with 0.40 gph nozzle 91,000 Btuh with 0.50 gph nozzle 105,000 Btuh with 0.65 gph nozzle 120 119,000 Btuh with 0.75 gph nozzle 140,000 Btuh with 0.85 gph nozzle 154,000 Btuh with 1.00 gph nozzle ama C US UNUSED COOL HEAT S CONT LEADS 2 EAC ON 1 Y 2 C R W G 14 A96281 Heavy-duty blower circulates air across the heat exchanger to transfer heat into the home. Access door to air filters and blower. Air filters. Unique silencer system controls combustion noise. Return- plenum. -air Stainless steel combustion chamber. Heat exchanger designed and shaped to efficiently transfer heat from furnace into the home. Supply- plenum. -air Fully insulated internal walls to minimize heat loss.