Florida Home Inspector Practice Test

What is the purpose of a Hartford Loop?

1. To increase water pressure

2. To preclude siphon action if the unit develops a leak

3. To ensure efficient drainage

4. To enhance air circulation

The correct answer is: To preclude siphon action if the unit develops a leak

The Hartford Loop is a critical component in heating systems, particularly in steam heating installations. Its primary function is to prevent siphoning action that could occur if there is a leak in the system. When a heating unit, such as a boiler, is operational, water and steam move through the system. If a leak develops, it can create a drop in pressure that causes the remaining water to be siphoned out of the boiler through the leak. The Hartford Loop includes a vertical pipe that connects the boiler’s water outlet to the drop header, which helps to maintain a level of water in the boiler while also allowing steam to escape. By implementing this design, the system is able to prevent the unintended siphoning of water, thus ensuring the boiler remains filled with an adequate amount of water for safe operation. This protective measure is essential for maintaining the integrity and safety of steam heating systems. Other options are not aligned with the specific function of the Hartford Loop. While increasing water pressure, ensuring efficient drainage, and enhancing air circulation might be important in other contexts, they do not relate to the primary purpose of preventing siphon action in a heating system.