Boiler Drain Pump Flange Gaskets Pump Return Sensor Supply Sensor Burner Gasket Blower Gasket Bottom Combustion Chamber Burner Coin Vent Safety Limit 230 F Top Combustion Chamber BlowerCombustion Air InletIgnitor Ignitor GasketBoiler Coil, InsulationBoiler Coil Gas Valve Coil Cover, Insulation Reset Switch Control PanelControl Panel Gas Shutoff Valve Gas Shutoff Valve Gas Valve Coin VentBurnerIgnitor Return Sensor Supply SensorPumpBlower Boiler Drain Reset Switch