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NORA Oilheat Technicians Manual

Shut Off Valve Auxiliary Filter Chapter 4—Fuel Units and Oil Valves 4-9 Figure 4-10: Booster fuel unit Aux. Tank Tank Tank Chapter 4 Fuel Units and Oil Valves 1/2 in. O.D. Tubing—Inlet Line Suntec Boost Pump and Motorset 1/2 in. O.D. Tubing— Return Line Approx. 3 inches Figure 4-11: Booster fuel unit; low pressure side installation Filter H (15 Ft. Max.) Figure 4-12: Booster fuel unit; auxiliary tank installation for multiple furnaces Vent 2 Ft. Min. Feeder Lines Suspended Furnaces 1-1/4 In. Pipe Suntec Boost Pump & Motorset Approx. 3 Inches 15 Ft. Max. Lift 1/2 In. O.D. Tubing— Return Line 1/2 In. O.D. Tubing— Inlet Line 35 Ft. Max. Booster fuel units Booster fuel units are normally used to assure an adequate supply of oil to one or more overhead furnaces. They are usually capable of lifting oil 15 feet and supplying the oil up to 35 feet above the pump. They can be used as continuous or intermittent duty transfer units for filling a small overhead feeder tank or for other similar purposes. Booster pumps are a fuel unit and motor. Figure 4-10 shows a Booster Fuel Unit. The pressure regulating valve assembly functions as a relief valve. A vacuum breaker is recommended as a protection to insure an instantaneous supply of oil when more than one burner is being supplied. Piping: Suction and return lines should be sized to the specific model boost pump and lift location. Follow manufacturers’ instructions. All fittings should be of the flare type. A return line from the fuel pump bypass connection to the tank is required in all installations. Extend the return line to the same depth in the tank as the suction line. Also check local code before making the installation. Figure 4-11 shows the input or low pressure side of the installation. The Auxiliary Tank Installation shown in Figure 4-12 is another way of hooking up multiple suspended furnaces. Figure 4-13 on following page shows a Pressurized System installation. R


NORA Oilheat Technicians Manual
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