Blower Vacuum Switch Transformer Terminal Block Field Wiring Panel-FD Integrated Control Board-FD Header Hardware Kit Header Mounting Base Kit 1/8 in NPT Brass Plug Water Pressure Switch Heat Exchanger Assembly High Limit 135F Bypass Cartridge Kit Header Cartridge Retaining Nut Header Assembly Header Only 3/4 in NPT Brass Plug Drain Plug with Gasket Thermistor Ignitor-FD Ignitor Access Cover Control Box Cover Assembly Gas Manifold Burner Orifice Kit Gas Valve-FD Blower Inlet Baffle Combustion Blower-FD Flame Sensor Lower End Cap-FD Header Assembly Header Only Thermistor High Limit 135F Front Access Door Assembly Base Leg-FD Left/Right Connection/Junction Box Water Pressure Switch Blower Vacuum Switch Left Trim Panel Kit Left/Right Connection/Junction Box Gasket, CC Front/Air Box Top and Front Panel Gasket, Bezel/Top-FD Display Board Only Bezel and Keypad Assembly Water Pressure Switch Heat Exchanger Assembly Heat Exchanger Assembly Flue Collector Side Panel Rain Guard Assembly Heat Barrier Panel Jacket Top and Flue Cover Rear Access Door Assembly Upper End Cap-FD Right Trim Panel Kit Top/Flue Cover Terminal Block Top/Flue Cover Jacket Top and Flue Cover Front Access Door Assembly Rear Access Door Assembly Top and Front Panel Upper End Cap-FD Lower End Cap-FD Right Trim Panel Kit Left Trim Panel Kit Left/Right Connection/Junction Box Left/Right Connection/Junction Box Base Leg-FD Flue Collector Side Panel Rain Guard Assembly Heat Barrier Panel Combustion Blower-FD Ignitor Access Cover Control Box Cover Assembly Terminal Block Burner Orifice Kit Gas Manifold Gas Valve-FD Ignitor-FD Flame Sensor Blower Vacuum Switch Transformer Terminal Block Integrated Control Board-FD Field Wiring Panel-FD Heat Exchanger Assembly 3/4 in NPT Brass Plug 1/8 in NPT Brass Plug Drain Plug with Gasket Header Assembly High Limit 135F Water Pressure Switch Bypass Cartridge Kit Bezel and Keypad Assembly Blower Vacuum Switch Water Pressure Switch Header Assembly Thermistor