Lanair DHI 300 - Manual (Page 26)

Section 10 - Priming The Fuel Pump
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12. Turn the room thermostat below room temperature or “OFF”. The fuel supply pump will
now stop.
13. Reconnect the fuel supply line to the burner.
14. Remove the jumper wire from the F-F terminals on the oil primary control, reattach the
yellow cad cell wires.
15. Adjust the burner air filter/regulator to 15 PSI.
16. If the fuel supply pump prime, or fuel stream has air in it (spurting, fluctuating flow) there
is likely a leak in the suction side of the plumbing. Refer to section 14, Trouble-shooting.
The burner should now be ready to fire.
Section 11 - Burner Start-Up Procedure
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Waste Oil Burner Start-Up
1. Make sure the main electrical service for the heater is turned off, and locked out.
2. Fill the oil supply tank with an approved fuel to a level that is above the pick-up tube
check valve.
3. Check for proper draft in the chimney. The draft must read -.02 W.C. cold.
4. Make sure there is air pressure at the heaters air filter/regulator, set at 15 PSI. Set the pri-
mary regulator on the air supply line to 30 PSI.
5. Set the fan/limit control slide switch to automatic.
6. Check the combustion air adjustment baffle for proper setting. Refer to Section 15 Flame
adjustment.
7. Set the room thermostat below room temperature (OFF).
8. Push the reset button on the oil primary control for 3 seconds.
9. Turn the main electrical service ON.
10. Flip the lighted rocker switch for preheating on the burner electrical box to the ON posi-
tion (pre-heater OFF the light is off, pre-heater ON the light is on.).
11. Prime the fuel supply pump. Refer to Section 10, Priming the Fuel Supply Pump.
12. If using waste 5W-50W oil or automatic transmission fluid for fuel, flip the pre-heater
rocker switch on (light ON, and wait 5-7 minutes for the pre-heater assembly to reach
operating temperature. Leave the pre-heater switch OFF if using No. 1 or No. 2 fuel oil.).
13. Turn the room thermostat up above the room temperature. The burner will now fire,
check the sight glass on the rear of the burner also inspect the flame through the flame
view port on the heater. (See page 29-31, flame adjustment).
14. Adjust the burner air filter/regulator to 15 PSI, and the primary air regulator to 30 PSI.
NOTE: 15 PSI on the air filter/regulator is the starting point, you may need to adjust from
there when VISUALLY SETTING THE FLAME (See page 29-31, flame adjustment).