Thermocouple Neutralizer 1 Gas Hot Water Boiler: Burnham Series 3 Boiler- Perform a tune-up and cleaning to help ensure reliable and safe operation. Inspect for cracks & deterioration of Heat Exchanger Check and clean Burners tubes and heat exchanger- ok, vacuumed-ok Check and clean flame sensor/flame rod and ignition Assembly-ok Spark igniter. Replace thermocouple on steam boiler. Check Safety Controls-ok Check electrical wiring and components-ok Check Gas valve & Gas Line-ok Check Combustion Air & Exhaust-ok Check Temperatures & Water pressure settings; 18psi Performance-ok Check and run Thermostats- operating well at this time. Check zoning operation-isolate and run zoning. Check circulator pumps-ok amps and voltage check. Check water feeder, low water cut off, relief valve and expansion tank. Check for water leak no leakage at this time. Ran and monitored for good operations. All zones are fine supply and return lines getting hot. Perform check for HWH. Check for water leak, no