Performed heating maintenance on one burnham hot water boiler with indirect domestic hot water tank removed and cleaned the burners and the electronic spark igniter and checked electrical and mechanical components and connections also checked automatic flue damper and checked the expansion tanks also flushed the domestic hot water indirect tank and covered the condensers and turned the power off at the disconnect at the condensers checked boiler and domestic hot water left systems operational View visual findings from this job here - https://visionshare.xoi.io/?id=XA-EE1C-6844012A1CCD4C488E74A1BD4F8E3A75