From inside (document excerpt):
Product Data 58CLA Low-Boy Oil Furnace Series 110 Input Capacities: 70,000 thru 154,000 Btuh The Latest in Oil Furnace Technology The model 58CLA combines high efficiency and quiet operation with oil heating technology. The 58CLA is available in 2 sizes. Each size can be fired at 3 different rates by a simple nozzle and pump pressure change. Unit 58CLA105 covers input ranges from 70,000 to 105,000 Btuh.
Unit 58CLA120 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 58CLA are the finest in the industry. The unit uses a Beckett oil burner with a Honeywell R7184 ignition controller, “clean-cut ” oil pump and fan cycler timer. The 58CLA is a standard part of a quality-built home. This highefficiency 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. 58CLA FEATURES/ BENEFITS Casing — Made of 18 gage painted steel for years of durability. The cabinet features an insulated enclosure for the burner and controls. Certifications — The 58CLA unit is UL and ULC certified. The efficiency is GAMA efficiency rating certified. 2003 Carrier Corporation Form 58CLA-3PD Warranties — Limited Lifetime Warranty on combustion chamber/ heat exchanger. Five-year Warranty on Beckett burner. Two-year Warranty on Honeywell ignition control. Contact your dealer for details. Combustion Products Venting — Rear flue outlet. Unit may be vented using Type L vent material and a factory-built metal or masonry chimney. The unit may also be sidewall vented with an approved power venter. Insulation and Soundproofing — A unique sound trap along with insulated walls efficiently captures most combustion noise and vibrations and makes this unit 1 of the quietest on the market. Adjustable Blower Speed — Fourspeed blower for precise airflow selection of heating or cooling operation. Constant Low-Speed Blower Switch