Gas Steam 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, vacuumed-ok Check and cleaned flame sensor & Pilot Assembly-ok Note: the thermocouple was replaced with a new one on this visit Check Safety Controls-ok Check electrical wiring and components-ok Check Gas valve & Gas Line-ok Check Combustion Air & Flue Pipe-ok Check GVD- Flue Damper-N/A Check LWCO-okay Check and cleaned pressuretrol pigtail-ok Check and make leak test-ok, it is not leak at this moment Check relief valve-ok Check and clean pressure retrol-ok Check Automatic water feeder-N/A Check Temperatures & settings-ok Flush boiler twice. Check and run Thermostat- operating Check and checked HWH. Check for leak, no leakage at this moment. Check gas control valve-ok Check safeties-ok Check air combustion and draft-ok HWH operating fine at this moment. Run and test system, runs fine, left system operating wel