High efficiency Hot Water 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 an heat exchanger- ok, vacuumed-ok Checked and cleaned flame sensor and ignition Assembly-ok Note: igniter rod need to be replaced SAP. Check Safety Controls-ok Check electrical wiring and components-ok Check Gas valve & Gas Line-ok Check Combustion Air & Exhaust, intake lines-okay Check GVD Damper-N/A Check Temperatures & Water pressure settings; Performance-ok Check and run Thermostats- operating well at this moment. Check circulation pumps-ok 2x zones Check and clean condensation trap of the boiler-ok Check and clean condensate pump and drain line-okay Check and cleaned NC1 neutralizer kit-okay Replaced rocks minerals on this occasion. Check for water leaks, no leakage at this moment Check o take & exhaust lines and combustion-okay Run and monitoring for goop operation-okay Left heating system oper