42002-0024S GENUINE MasterTemp Max-E-Therm Heater Stack Flue Sensor

ORIGINAL Pentair MasterTemp Sta-Rite Max-E-Therm Swimming Pool and Spa Heater Stack Flue Sensor 42002-0024S

Used on the following models:

• 460730 200K BTU NG IID MASTERTEMP LOW NOX HEATER
• 460731 200K BTU LP IID MASTERTEMP LOW NOX HEATER
• 460732 250K BTU NG IID MASTERTEMP LOW NOX HEATER
• 460733 250K BTU LP IID MASTERTEMP LOW NOX HEATER
• 460734 300K BTU NG IID MASTERTEMP LOW NOX HEATER
• 460735 300K BTU LP IID MASTERTEMP LOW NOX HEATER
• 460736 400K BTU NG IID MASTERTEMP LOW NOX HEATER
• 460737 400K BTU LP IID MASTERTEMP LOW NOX HEATER
• 460771 250K BTU NG IID ASME MASTERTEMP LOW NOX HEATER
• 460772 250K BTU LP IID ASME MASTERTEMP LOW NOX HEATER
• 460775 400K BTU NG IID ASME MASTERTEMP LOW NOX HEATER
• 460776 400K BTU LP IID ASME MASTERTEMP LOW NOX HEATER
• 461020 250K BTU NG IID ASME HD CU-NI MASTERTEMP LO NOX HEATER
• 461021 400K BTU NG IID ASME HD CU-NI MASTERTEMP LO NOX HEATER
• 461058 125K BTU NG IID MASTERTEMP 125 HEATER
• 461059 125K BTU NG IID MASTERTEMP 125 HEATER W/ CORD
• 461060 125K BTU LP IID MASTERTEMP 125 HEATER
• 461061 125K BTU LP IID MASTERTEMP 125 HEATER W/ CORD
• 460792 175K BTU NG IID MASTERTEMP LOW NOX HEATER
• 460793 175K BTU LP IID MASTERTEMP LOW NOX HEATER
• 460805 400K BTU NG IID HD CU-NI MASTERTEMP LO NOX HEATER
• 460806 250K BTU NG IID HD CU-NI MASTERTEMP LO NOX HEATER
• 461000 200K BTU NG IID ASME MASTERTEMP LOW NOX HEATER
• 460763 400K BTU NG IID ASME MAX-E-THERM LOW NOX HEATER
• 460764 400K BTU LP IID ASME MAX-E-THERM LOW NOX HEATER
• 460767 250K BTU NG IID ASME MAX-E-THERM LOW NOX HEATER
• 460768 250K BTU LP IID ASME MAX-E-THERM LOW NOX HEATER
• SR200NA 200K BTU NG IID MAX-E-THERM LOW NOX HEATER
• SR200LP 200K BTU LP IID MAX-E-THERM LOW NOX HEATER
• SR333NA 333K BTU NG IID MAX-E-THERM LOW NOX HEATER
• SR333LP 333K BTU LP IID MAX-E-THERM LOW NOX HEATER
• SR400NA 400K BTU NG IID MAX-E-THERM LOW NOX HEATER
• SR400LP 400K BTU LP IID MAX-E-THERM LOW NOX HEATER
• SR400HD 400K BTU NG IID CU-NI MAX-E-THERM LOW NOX HEATER
• SR333HD 333K BTU NG IID CU-NI MAX-E-THERM LOW NOX HEATER
• SR200HD 200K BTU NG IID CU-NI MAX-E-THERM LOW NOX HEATER

Location
The Indoor Stack Flue Switch (ES2)/Stack Flue Sensor (SFS) Is Located on the Exhaust Elbow.

Function
The Stack Flue Sensor Prevents the flue gas output from exceeding 500F+-18F