Performed annual tune up on a Viessmann propane boiler. Cleaned the burner, heat exchanger, igniter, flame sensor, and condensate trap. Inspected combustion, safety controls, relief valve, expansion tank, neutralizer pellets, venting, and overall hydronic system operation. Performed a bubble test on the gas line and checked CO levels—no leaks detected. Verified operation and system is working properly at this time.
