Go Back Return Side Gap Closure 1/4 inch Plug Return Header Drain Cock Return Header Header Bolt/Washer/Nut Tube Baffles Clip Syphon Loop Insulation Block, Front and Rear Cover Syphon Loop Insulation, Fiberglass Drain Plug Grommet Gasket Header Baffle, Heat Exchanger Insulation Block Temp. Control Assembly Rain Shield Bezel ON-OFF Switch Thermostat Dial Temp-Lock Stop Plate Black Knob Painter Plate Assembly Electronic Temp Control Assy. Fusible Link Assy. Transformer Electronic Fuse Assembly Fuse Packet Ignition Control Gas Valve Pilot Gas Tube Gas Orifice Ceramic Insulator Assy. Pilot Burner/Electrode Door w/ Latch Burner Tray Assembly O-Ring Temp. Sensor Bulb Protector Sleeve Temp. Sensor Retainer Clip 3/4 Inch Header Restrictor Flow Control Cap Flow Control Gasket Flow Control Shaft Flow Control Spring Flow Control Disk Temperature Sensor In/Out Header Flange Packing Collar Sleeve Flange Flange Flange Bolt Gap Closure In/Out High-Limit Retainer Clip High-Limit Cover High-Limit 150F Switch High-Limit 135F Switch High-Limit Wire Harness 1/4 inch Drain Cock Drain Cock Bushing Drain Plug Grommet Side Assy. tile Cover Pressure Switch Sides Block Insulation Ignition Control Wire Harness High Voltage Ignitor Assy. Jacket Assembly Main Pilot w/ Burner Main Burner Burner Tray