OPERATION OF OIL BURNER

Once the furnace flue pipe, electrical and oil line connections have been made, use the following instructions to set the burner:

Shut off the electrical power to the furnace.

Install an oil pressure gauge to the pressure port on the oil pump. (Refer to the oil pump specification sheet included with the burner instructions).

Restore electrical power to the furnace.

Start the furnace and bleed all air from the fuel oil lines.

Close the purge valve and fire the unit.

Allow the furnace to warm up to normal operating temperatures. During this time, set the pump pressure in accordance with the data provided in Appendix A, Table A-2, and A-5.

When the furnace has reached "steady state" (after approximately 15 minutes). Set combustion air damper to get a TRACE of smoke.

Check the system temperature rise. The temperature rise is the difference between the return air temperature measured at a point near the return air inlet, and the supply air temperature measured near the furnace outlet. If the temperature rise is too high, the airflow must be increased. If the temperature rise is too low, the fan should be slowed down.

Turn off the burner. Observing the duct thermometer in the supply air stream, note the temperature at which the blower fan stops. The fan adjustments can be made by moving the dipswitch settings on the timer control board for fan off delay.

To check the operation of the limit switch, shut off power to the furnace. Temporarily remove the neutral wire from the direct drive blower motor. Restore the electrical power to the furnace and set the thermostat above room temperature. After three or four minutes of burner operation, the limit control should turn the burner off. When the limit function test is complete, shut off electrical power to the furnace, replace the neutral wire to the blower fan motor, and then restore power. The blower fan will start up immediately. Once the temperature has dropped and the limit control has reset, the fan will operate until the fan off time is achieved. The oil burner will then

resume operation and continue until the thermostat is satisfied. Restore the thermostat setting to a comfortable temperature.

Set the heat anticipator adjustment in the thermostat (if so equipped), by removing the "R" or "W" wire to the thermostat, then reading the amperage draw between the two wires. Failure to remove one of the wires from the thermostat while performing this test could burn out the heat anticipator. Set the heat anticipator to the amperage measured.

NOTE: THE FURNACE SHOULD BE RUN THROUGH AT LEAST THREE FULL CYCLES BEFORE LEAVING THE INSTALLATION, TO ENSURE THAT ALL CONTROLS ARE OPERATING PROPERLY AND AS EXPECTED.

NOTE: ALL JOINTS IN ANY POSITIVE PRESSURE VENTING SYSTEM MUST BE CHECKED FOR LEAKS BEFORE LEAVING THE INSTALLATION SITE.

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30318 R4 9/9/2005

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Field Controls MPL-B, WML-C manual Operation of OIL Burner
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MPL-B, WML-C specifications

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