Lanair MX 75, Installation & Operation Manual

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5.4 Heater Startup
Prior to the initial startup of the heater, make sure the power has been on at least 10 minutes
for the nozzle block to heat up. Once the burner is operating, the system should be checked
and necessary adjustments made. It takes some time for fuel to reach the nozzle and push all
the air out of the system.
DO NOT START THE BURNER UNLESS ALL CLEANOUT COVERS
AND THE FLUE PIPE ARE SECURELY IN PLACE.
5.4.1 Priming and Starting the Heater
This section explains how to prime the metering pump and start the heater.
1. Make sure the used oil storage tank has adequate oil, with oil level above the low fuel
cut off float switch. Do NOT fill with new motor oil as it will not burn properly!
2. If power to the heater is off, switch it on. Wait 10 minutes for the oil preheater to heat up.
3. Verify that the primary control is not displaying any errors or lockouts. You may need
to reset the controller by pressing the reset button.
4. Bridge the T1 and T2 terminals of the primary control with an alligator clip or short wire.
5. Once the burner motor starts running, bridge the F1 and F2 terminals of the primary control.
6. Monitor the view port on the side of the heater to confirm the presence of ignition spark
and observe the status of the flame. If no spark is visible in the view port, remove the
F1-F2 bridge and allow the primary control to automatically reset and reattempt light
off, then replace F1-F2 bridge and confirm that continuous spark has now been
established. If continuous spark cannot be established, stop priming by removing both
bridges and turning off the thermostat; troubleshoot the issue to restore ignition spark,
then return to Step 3.
7. If no fuel sprays from the burner nozzle after 10 minutes of priming, call for technical
support to troubleshoot the issue to restore fuel delivery to the system.
8. When priming is achieved, the flame should light right away. Do not continue to spray
fuel into the chamber if it is not burning!
9. Remove the T1-T2 and F1-F2 bridges to return the unit to normal operation.
Continue to the next section for important checks and adjustments.
10. If the heater will not light, call for technical support.