This project included the complete removal and replacement of the existing outdated boiler and domestic water heater with new equipment. All near-boiler piping and wiring were upgraded to ensure safe, reliable, and code-compliant operation. The supply and return manifolds were replaced to improve system performance and overall heat distribution. A scale prevention device and thermostatic mixing valve were installed on the new water heater to enhance longevity and provide consistent water temperature control. The water heater tank temperature was set to 140°F, and the mixing valve was calibrated to 4.5, delivering 120°F water to all fixtures for optimal safety and comfort. All heating zones were thoroughly purged to remove trapped air, ensuring proper circulation and balanced heat distribution throughout the system. System flow and operation were verified to confirm each zone is functioning as designed. A boiler treatment inhibitor was added to the system to help prevent corrosion and
