27PARTS LISTItem Description Part No.1 Venturi Tube and Burner Assembly 232612 Thermocouple Retaining Nut 095763 Thermocouple with Fusible Link 095964 Injector Casting with Air Register Plate Propane Gas 09555Natural Gas 097785 Retaining Screw for Injector Tube 095726 Primary Burner Orifice (Low Heat) Propane Gas 09563Natural Gas 097767 Injector Tube 095629 Pressure Valve 0986111 Safety Control Valve Zone Control Heaters 22285Individual Control Heaters 2228615 Retaining Screw for Control Assembly and Thermocouple 0957516 Thermocouple Fuse Clip 0956518 Keyring 0962024 Tubing, Pilot Safety Valve to Pressure Valve 0956925 Secondary Orifice (High Heat) Propane Gas 23211Natural Gas 2123626 Thermostatic Head with Sensor, Individual Control 0941527 Valve, Modulating Propane Gas 09748Natural Gas 0974928 Sleeve, Adapter 0968229 Kit, Combustion Cones and Gasket 24214Consisting of:29A Gasket 0956029B Inner Cone 0955729C Outer Cone 2454331 Screw, 10-32 x 1 1/2 2363632 Nut, 10-32 0957833 Spacer 0956834 Filter Kit 2042834A Filter Adapter 2393134B Filter 2395335 Burner Plate 23201-0136 Cover Plate, Thermocouple 2331537 Orifice, Bypass (Individual Control) Propane Gas 09744Natural Gas 0974538 Truss Clip 24486OPTIONS (Not Illustrated):Item Description Part No.Coupling, Quick Disconnect, Kit 21335Consisting Of:Shut-Off Valve 05548Nipple, 1/4 in. Close 01142Coupling, Quick Disconnect 21328Bushing, 1/2 x 1/4 01519Hoses 1/4 in. x 6 ft., Rigid x Swivel, Poultry 204951/4 in. x 10 ft., Rigid x Swivel, Poultry 204961/4 in. x 12 ft., Rigid x Swivel, Poultry 204971/4 in. x 6 ft., Swivel Both Ends, Swine 204991/4 in. x 10 ft., Swivel Both Ends, Swine 202421/4 in. x 15 ft., Swivel Both Ends, Swine 20500Kit, !/8 NPT Fitting ( Not Illustrated) 20406