A.o. Smith 100093983 Pilot Assembly Thermopile Propane

Product Description

The A.O. SMITH 100093983 is a propane pilot assembly with thermopile and tubing, designed for use in propane-fired water heaters. The thermopile generates a low-voltage electrical signal from the pilot flame, which powers the gas valve and safety controls without requiring external electricity. This assembly includes the necessary tubing for a complete pilot circuit replacement. It is typically installed by licensed plumbers or gas appliance technicians performing water heater service or repair.

This pilot assembly is suited for propane gas water heater applications where the original pilot assembly has failed or degraded. The thermopile design is common in self-powered, non-electric water heaters that rely on millivolt control systems. Installers replacing a faulty pilot or thermopile will find this assembly provides the pilot burner, thermopile generator, and connecting tubing as a single serviceable unit.

Key Features

• Propane-rated pilot assembly for LP gas water heater applications
• Includes thermopile generator for millivolt-based gas valve control
• Tubing included for complete pilot circuit replacement
• OEM-style replacement designed to restore original pilot function
• No external power source required — thermopile generates operating voltage from pilot flame

Compatibility

Designed as an OEM-style replacement pilot assembly for A.O. SMITH propane-fired water heaters equipped with thermopile millivolt control systems.

Installation Notes

Installation should be performed by a licensed plumber or qualified gas appliance technician in accordance with local codes and the appliance manufacturer's service documentation. Shut off the propane gas supply at the valve and allow the unit to cool before beginning disassembly. Verify all tubing connections are secure and leak-free using an approved gas leak detection solution before relighting the pilot. Follow the water heater's pilot lighting instructions carefully after reassembly.

Technical Specifications

• Fuel Type: Propane (LP)
• Assembly Type: Pilot Assembly with Thermopile and Tubing

Standard Information

• Brand: A.O. SMITH
• Manufacturer Part Number: 100093983