New York Codes, Rules and Regulations
Title 12 - DEPARTMENT OF LABOR
Chapter I - Industrial Board Of Appeals
Subchapter A - The Industrial Code
Part 4 - Low Pressure Boilers
Subpart 4-11 - Flame Safeguard Control Requirements For All Oil Burners Installed Before March 31, 1965
Section 4-11.6 - Automatic-maximum firing rate over 33 gallons per hour

The main flame trial-for-ignition period shall not exceed 30 seconds when the burner has a low firing rate start under 16 gallons per hour and shall not exceed 15 seconds when the burner does not have such a low firing rate start. The main flame shall be supervised continually while the burner is firing. The electrical circuit to the main fuel valve shall be automatically de-energized within four seconds after flame failure and the de-energized valve shall automatically close within the next five seconds. The burner may make one attempt to relight automatically during this flame failure reaction time before the valve closes.