New York Low Pressure Boiler Certificate of Fitness (COF) Practice Test

When mechanical ventilation is supplied, what electrical action is required with the burner?

1. Must be synchronized

2. Must be electrically interlocked

3. Must be continuously monitored

4. Must be manually operated

The correct answer is: Must be electrically interlocked

The requirement for electrical interlocking between mechanical ventilation and the burner is crucial for safety and operational integrity. An electrical interlock ensures that the burner can only operate when the mechanical ventilation system is functioning properly. This prevents dangerous situations such as potential backdrafts, where combustion gases could escape into occupied spaces if the ventilation is not adequate. When the burner is interlocked with the mechanical ventilation, if the ventilation system fails or is turned off, the interlock will shut down the burner automatically. This is essential in maintaining safe combustion conditions and protecting against fire hazards and carbon monoxide buildup. Hence, the correct answer highlights the necessary safety feature of ensuring that both systems work in tandem to promote safe operation of the low-pressure boiler system.