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The oil burner is equipped with a primary relay. An aquastat with immersion well is packed with the burner. The thermostat is factory set at 120°F for residential use (see caution on page 1 regarding temperature variations). Install the immersion well with the aquastat and check the bulb length (see “Burner & Controls” section, page 10). Remove the cardboard core from the burner opening. Mount the burner on stud bolts and place the gasket (supplied) between the burner flange and the heater. Secure the burner to the heater with 1/4 -20 nuts (supplied). Open the inspection door on the heater and check the burner tube with a mirror before firing to be sure the opening is not blocked (see Maintenance and Service sections on pages 6 and 7 for troubleshooting). All wiring must comply with applicable codes and ordinances. The primary relay is wired to the burner at the factory. Install the aquastat well in the 3/4" tapping at the front of the heater. Be sure the sensing bulb is inserted all the way into the well. For Honeywell aquastats, tighten the screw on top of the aquastat to secure the control to the well. For Carlin EZ-Temp aquastats, refer to the pre-packaged installation guide for proper set-up procedure. Refer to drawings for correct models. Connect the power supply to the aquastat and run through a fused disconnect switch (attached to heater in field). See Figure 1. Gravity System: The oil burner is normally equipped with a single-stage pump equipped for one line (gravity) flow. Use 1/2" O.D. soft copper tubing and attach with flared fittings. DO NOT USE COMPRESSION FITTINGS. Install the shut off valve and oil filter in the oil line. Follow the pump manufacturer’s instructions (attached to the pump). Lift System: The burner should be ordered with a 2-stage pump. Run a 2-line system (suction and return lines). Install the bypass plug according to the instructions attached to pump (plug is in a bag with an instruction sheet). – 5 – PLACE THE WATER SYSTEM IN OPERATION Warning: Handhole cover may loosen during shipping – check for tightness before putting heater in operation. – 5 – PLACE THE WATER SYSTEM IN OPERATION Warning: Handhole cover may loosen during shipping – check for tightness before putting heater in operation. For any horizontal run exceeding the maximum length specified in Figure 4, or any lift of more than 10 feet, a booster pump must be used. Booster pumps may be obtained from Sun Tec Hydraulics, Rockford, Illinois. Booster pumps must be installed as close to the oil supply tank as possible. Suction and return lines should be the same diameter and both go within 6” of the bottom of the tank. The return line should stop slightly above the suction line. Use a minimum of fittings. Make bends in the tubing with as large a radius as possible. DO NOT USE COMPRESSION FITTINGS. Caution must be used in the final connection to the burner so as not to strain the fuel unit. Before attaching the tubing to the burner, form a coil in the tubing...

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