(For counterflow / horizontal units, refer to the section of the furnace instruction manual entitled “Horizontal / Counterflow Furnace Setup”) Figure 2: Installing and Securing the Oil Burner to the Furnace Mounting Plate Only qualified service personnel shall perform installation and service. 5 8) The burner and wiring harness are equipped with mating, three (3) pole, quickconnect, electrical couplings. To make the connection between the burner wiring harness and the furnace wiring harness, ope

3) On highboy furnace models, remove the burner access panel. This panel will be the upper access panel on the front of the furnace. On lowboy models, remove the front access panel. On horizontal / counterflow models, the burner is mounted on the front surface of the furnace. 4) Remove the three (3), 5/16 in. brass hex machine screw nuts and the three (3) steel flat washers from the threaded studs protruding through the burner mounting plate on the furnace. Retain this hardware for later reuse.

Base oil nozzle selection (i.e. heating capacity of the furnace) on a rate of heat loss (heating load) calculation performed for the building. Use the procedures developed in manuals provided by the Air Conditioning Contractors of America (ACCA) or the American Society of Heating, Refrigeration and Air Conditioning Engineers, Inc. (ASHRAE) to make these calculations. Refer to the Residential Load Calculation, Manual J, from the ACCA, and the ASHRAE Handbook Fundamentals volume, from ASHRAE, for

What to do if you find an oil leak: • DO NOT try to operate this appliance. • If possible, close the manual fuel shutoff valve on the oil supply tank. • Immediately call your oil supplier. Follow the oil supplier’s instructions. • If you cannot reach your oil supplier, call the fire department. A qualified installer, service agency, or the oil supplier must perform installation and service. These instructions should be: • read prior to installation. • retained for qualified service personnel • r