Ao Smith 100293455 Pilot Thermopile Kit Natural Gas

Product Description

The AO SMITH 100293455 is a pilot and thermopile replacement kit with tubing, configured for natural gas applications. This kit includes the pilot assembly and thermopile components needed to restore ignition and flame-sensing function in a water heater or similar gas-fired appliance. The thermopile generates the millivolt signal that powers the gas valve control circuit, while the pilot assembly delivers the standing pilot flame. Licensed plumbers and HVAC technicians performing water heater service or gas appliance repair are the primary installers of this kit.

This kit is suited for natural gas systems where the original pilot assembly or thermopile has failed, producing symptoms such as a pilot that will not stay lit, a gas valve that does not open, or insufficient millivolt output at the gas valve terminals. The included tubing simplifies reinstallation by providing the correct gas supply line for the pilot burner, reducing the need for field-fabricated connections.

Key Features

• Complete pilot and thermopile assembly with tubing included for a direct replacement install
• Configured for natural gas fuel type
• Thermopile generates millivolt output to power the gas valve control circuit
• Standing pilot design maintains continuous ignition reference flame
• Kit format reduces sourcing of individual components during service calls

Compatibility

Designed as an OEM-style replacement pilot and thermopile kit for natural gas water heaters and gas-fired appliances requiring this assembly type.

Installation Notes

Installation should be performed by a licensed plumber or qualified HVAC technician in accordance with local gas codes and the appliance manufacturer's service documentation. Shut off the gas supply at the service valve and allow the appliance to cool completely before beginning disassembly. Verify the new thermopile millivolt output at the gas valve terminals after lighting the pilot to confirm proper operation before returning the appliance to service. Do not modify the tubing routing or substitute non-OEM components for gas-side connections.

Technical Specifications

• Fuel Type: Natural Gas
• Kit Contents: Pilot assembly, thermopile, tubing

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100293455