Maintenance on steam boiler 1 Gas Hot Water Steam Boiler: Carrier 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 tubes and heat exchanger- ok, vacuumed-ok Check ignition Assembly-ok thermocouple in good condition. Customer also has replacement in stock. 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; Performance-ok Check and run Thermostats- operating well at this time. Check Automatic water feeder, Automatic low water cut off, Flush boiler multiple times. Check for water leak no leakage at this moment. Run and monitored for good operations. All zones are fine supply and return lines getting hot. Perform check for HWH. Check for water leak, no leakage at this time. Check control gas valve-ok Check air Combustion and Draft-ok Run and monitor