Replace disposable air filters at least twice a year. Make certain the replacement filter is the same size as the one being replaced. The filter size is marked on the outer edge of the air filter. Install the filter with the arrow marked on the filter pointing toward the furnace. Oil Burner NOTICE: A qualified heating contractor MUST service the oil burner in this furnace at least once a year. Generally, service to the burner will involve a thorough inspection and cleaning of the burner, replace

inch per foot from the furnace to the vent termination. Long horizontal sections of the venting system must be supported at least every five (5) feet with metal straps to prevent sagging of the vent piping. Secure all joints in the vent connector with sheet metal screws or equivalent fasteners. Vent piping must not be inserted beyond the inside wall of the chimney flue. Power (Side-Wall) Venting – Important Note Regarding c CAUTION: Crown Boiler Company will NOT assume responsibility for damage

• Improper installation, adjustment, alteration, service, or maintenance can cause a fire or explosion resulting in property damage, personal injury, or loss of life. For assistance or additional information consult a qualified installer or service agency. These instructions should be: • read prior to installing the furnace. • retained for reference by qualified service personnel. • reviewed before performing any service or maintenance. Crown Boiler Company 3633 “I” Street Philadelphia, Pennsylv

A CO2 reading within the limits of Table 1 with no measurable CO is desirable. The maximum acceptable CO reading is about 50 PPM. If the CO reading is too high, open the burner air shutter, or air band, slightly to permit more combustion air to the flame. Recheck the CO level and adjust as required. NOTICE: On the Riello 40-F3 burner only, it will be necessary to remove the oil burner sound cover to make adjustments to the oil pump pressure and airflow. The presence of the burner sound cover ove