Product Manual

Section 10 - Priming The Fuel Pump

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Priming The Fuel Pump

1. The fuel level in the supply tank must be

above the check valve on the pick-up tube.

2. Remove the bowl of the suction line strainer,

and fill with clean fuel. Replace the strainer

bowl.

3. Remove the two yellow wires from the F-F

terminal on the oil primary control. Install a

jumper wire between the F-F terminals (see

Figs. 8 & 9).

4. Adjust the air filter/regulator on the heater

to 15 PSI.

5. Remove the fuel supply line from the burner,

and position a container to catch the fuel.

6. Back the thumb screw out (CCW) on the by-

pass regulator until it is free, the turn (CW)

two turns to seat the diaphragm.

7. Loosen the bleeder screw on the pump one

turn, and attach a piece of 3/16” ID clear

plastic tubing.The tubing should be long

enough to allow the

fuel to be returned to

the tank.

8. Turn the room thermostat above room temperature, or to the “ON” position.

9. Momentarily disconnect one end of the jumper wire at the F-F terminals on the oil pri-

mary. The fuel pump will now start.

10. Observe the clear tubing attached to the bleeder screw on the pump.When a steady

stream of fuel (no air bubbles) flows close the bleeder screw. Remove the tubing from

the bleeder screw.

11. Observe the end of the fuel supply line that is disconnected from the burner. Allow a

steady stream (no air bubbles) of fuel to flow into the container for several minutes.This

will flush any debris from the fuel line that could potentially plug the nozzle. The vacu-

um gauge reading should not exceed 5” HG of vacuum.

Figure 8

Remove two yellow wires

Figure 9

Install jumper wire