Perform heating maintenance on Navien Combi boiler: - shut system down at arrival - Open boiler cabinet door - Remove the fresh air intake screen: washed clean and installed back - Remove the flame rod and spark igniter: these components are showing extremely heavy wear and warping- replacement is recommended - Cleaned flame rod and igniter with copper bristle brush, and polish clean with steel wool - Vacuum and blew out inside of the Navy and boiler cabinet - Remove the bottom of the condensate trap, dumping all dirty water, and sediment - Customer approved neutralizer mineral replacement - Dump the minerals from the existing condensate pump, perform full condensate pump cleaning, install new minerals, and reassemble pump - The condensate drain line off the boiler is leaking and corroded- copper fittings - Remove the copper fittings off the navy and boiler and pipe the condensate drain in PVC from the boiler to the condensate pump - Isolate the domestic hot water side of the boiler