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Manafacture: Crown Boiler File size: 219.07 kb File name: Language of manual:

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. 5) Rough handling of the furnace may occur while in transit. Under some conditions, the combustion chamber can shift out of position. The chamber should seat properly on the base of the heat exchanger. Check for proper alignment of the burner air tube with the circular opening in the combustion chamber and trial fit the burner to check the insertion depth of the oil burner into the combustion chamber. It may be necessary to remove the burner mounting plate to get sufficient access to the chamber. The end of the burner air tube should be inserted no farther than 1/4 inch back from the inside surface of the combustion chamber, refer to Figure 1. DO NOT allow the burner head, at the end of the burner air tube, to physically touch or protrude into the chamber. High temperatures in the combustion chamber can result in damage to the tube, the burner head, or both. A distance greater than 1/4 inch back from the inside chamber wall may cause oil spray impingement on the combustion chamber wall and subsequent sooting and the formation of carbon char deposits. 3 Only qualified service personnel shall perform installation and service. 4 Figure 1: Side View of Correct Burner Insertion into Combustion Chamber 6) Reinstall the burner mounting plate, if removed, and push the burner flange gasket (included with the burner) on to the burner mounting plate threaded studs. Seat the gasket against the mounting plate. 7) Reusing the fasteners removed in step (4) [three (3), 5/16 in. brass hex nuts and three (3) steel flat washers], install and secure the burner to the mounting studs protruding through the burner mounting plate, refer to Figure 2. (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, open the burner junction box cover (the oil primary control serves as the cover) and remove a knockout slug from the right-hand side of the burner junction box. 9) Insert the electrical coupling from the furnace wiring harness through the knockout hole in the burner junction box. Snap together the furnace electrical coupling with the oil burner el...

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