Which devices should be tested for proper operation during an annual tune-up?

During an annual tune-up, it is essential to test all the limits and safeties to ensure the safe and efficient operation of an oil heating system. These safety devices are designed to prevent hazardous conditions, such as overheating or unsafe pressure levels. Testing ensures that they function properly and will activate if a fault occurs, thus protecting both the system and the occupants of the building.

For instance, high limit switches, low-water cutoffs, and emergency shut-off switches should all be checked. If any of these devices are malfunctioning, it could lead to serious safety risks, including fire hazards or system failures. Regular testing of limits and safeties as part of a tune-up helps maintain compliance with safety regulations and promotes the longevity and reliability of the heating system.

Other choices, such as focusing solely on burner controls, pump functions, or line voltage readings, do not provide a comprehensive assessment of the system’s safety. While each of those aspects is important, they do not encompass the full range of protective devices necessary for proper operation. Therefore, testing all limits and safeties is a critical component of an effective annual tune-up.