Preform maintenance on one well McLean propane fired water boiler with two baseboard heating zones and indirect storage tank: * shut power to boiler * Remove the rollout switch, Flame guard on top and on bottom and pilot assembly * vacuumed and dusted out burner section of boiler under heat exchanger * vacuumed and brushed burners clean and clear * vacuumed and dusted boiler cabinet, piping and all components clean and clear * test and check expansion tank, water feed / back flow preventer, air vent and relief valves * confirm boiler pressure is normal 18psi * Secured all electrical, wiring, and components and polished clean * Check and inspect all piping, Circulator pump and components * Cleaned spark igniter and flame sensor with copper bristle brush and polish clean with steel wool * Reinstalled and secured pilot assembly back in place along with both flame guards and rollout switch * Return power to boiler * Test domestic hot water zone on boiler- System fires and is operating n