Preform maintenance on Burnham K2 boiler with DHW zone and (2) Unico hydro air handlers: GAS WATER BOILER: * shut power to boiler * removed cover door and open up access to heat exchanger * removed flame rod and igniter- both showing heavy ware * cleaned both components with copper bristle brush and polished with steel wool * reinstalled igniter and flame rod securing electrical connections * removed bottom of condensate trap- removed all dirty condensate water * prime trap with clean water * removed neutralizer kit from drain line piping: dump old minerals, wash canister and screen, install new neutralizer minerals, put kit back together and pipe back into drain line securing all connections * test / check expansion tank, water feed, back flow preventer, air vent and reliefs- okay * confirm boiler pressure is normal * clean and secured all electrical wiring, connections and components * inspected inside of boiler cabinet for any leaks- none * venting has been inspected and is good sh