Reason 1: The burner's damper opening is too large or the chimney damper opening is too large, causing too much air to enter the furnace.
Solution: Reduce the burner's damper opening and the chimney damper opening, and adjust the damper and damper to a suitable opening after ignition.
Reason 2: When the fuel oil pressure is greater than the atomizing steam pressure, the burner is not easy to ignite.
Solution: Adjust the fuel oil pressure to about 98kPa less than the atomizing steam pressure.
Reason 3: The burner nozzle does not spray oil.
1. Possible reasons include oil supply pipeline blockage, oil pump failure to pump oil, vacuum leakage in the oil supply pipeline, etc. Remove the high-pressure oil outlet pipe to check the oil pumping condition of the oil pump. When pumping oil normally, there should be an oil column spraying out.
2. The oil cut-off solenoid valve is not energized. When the oil cut-off solenoid valve loses power, even if the oil pump operates normally, the high-pressure end will not supply oil to the injector nozzle. Only when the controller energizes the oil cut-off solenoid valve will the fuel oil be allowed to spray out.
Reason 4: No ignition high voltage.
1. The ignition transformer is not powered on, which may be due to poor contact of the power supply line or the relay in the controller);
2. The insulation between the two ignition electrodes is poor due to carbon deposition, and the high pressure is leaked, and no discharge spark is generated.
The distance between the ignition electrodes should be about 3mm, and the distance between the ignition electrode and the front end of the nozzle is about 5~7mm. The insulation between the two electrodes must be good.
Reason 5: Low pressure of the burner oil pump
After long-term use and wear, the maximum pressure of the oil pump will gradually decrease, resulting in poor atomization of the oil spray, difficulty in ignition, and a large amount of thick smoke after ignition. The flame is unstable, and adjusting the oil pump pressure is useless.
There are two most basic conditions, one is to have well-atomized fuel oil, and the other is to have high-voltage sparks. The fuel pump supplies sufficient fuel, and a stable injection pressure difference can be established before and after the fuel injector to form fine fuel mist. The air supply volume during ignition should be small to prevent sparks and fuel mist from being blown away;
Reason 1: The burner's damper opening is too large or the chimney damper opening is too large, causing too much air to enter the furnace.
Solution: Reduce the burner's damper opening and the chimney damper opening, and adjust the damper and damper to a suitable opening after ignition.
Reason 2: When the fuel oil pressure is greater than the atomizing steam pressure, the burner is not easy to ignite.
Solution: Adjust the fuel oil pressure to about 98kPa less than the atomizing steam pressure.
Reason 3: The burner nozzle does not spray oil.
1. Possible reasons include oil supply pipeline blockage, oil pump failure to pump oil, vacuum leakage in the oil supply pipeline, etc. Remove the high-pressure oil outlet pipe to check the oil pumping condition of the oil pump. When pumping oil normally, there should be an oil column spraying out.
2. The oil cut-off solenoid valve is not energized. When the oil cut-off solenoid valve loses power, even if the oil pump operates normally, the high-pressure end will not supply oil to the injector nozzle. Only when the controller energizes the oil cut-off solenoid valve will the fuel oil be allowed to spray out.
Reason 4: No ignition high voltage.
1. The ignition transformer is not powered on, which may be due to poor contact of the power supply line or the relay in the controller);
2. The insulation between the two ignition electrodes is poor due to carbon deposition, and the high pressure is leaked, and no discharge spark is generated.
The distance between the ignition electrodes should be about 3mm, and the distance between the ignition electrode and the front end of the nozzle is about 5~7mm. The insulation between the two electrodes must be good.
Reason 5: Low pressure of the burner oil pump
After long-term use and wear, the maximum pressure of the oil pump will gradually decrease, resulting in poor atomization of the oil spray, difficulty in ignition, and a large amount of thick smoke after ignition. The flame is unstable, and adjusting the oil pump pressure is useless.
There are two most basic conditions, one is to have well-atomized fuel oil, and the other is to have high-voltage sparks. The fuel pump supplies sufficient fuel, and a stable injection pressure difference can be established before and after the fuel injector to form fine fuel mist. The air supply volume during ignition should be small to prevent sparks and fuel mist from being blown away;