A.o. Smith 100074224 High Voltage Igniter Cable Kit

Product Description

The A.O. SMITH 100074224 is a high voltage igniter cable kit designed for use in A.O. SMITH tankless water heaters. This kit provides the high voltage cable connection between the ignition control and the igniter, enabling reliable spark ignition of the burner assembly. It is a direct OEM replacement component installed by licensed plumbers or water heater service technicians during routine maintenance or ignition system repair. Correct igniter cable condition is critical to consistent burner startup and overall heater reliability.

This cable kit is applicable to a wide range of A.O. SMITH Voltex and Takagi-style tankless water heater models, covering both natural gas and liquid propane configurations. It is suited for residential and light commercial tankless installations including indoor, outdoor, direct vent, and open combustion applications. Service technicians encountering ignition failure, intermittent spark, or damaged cable insulation will find this kit a necessary replacement component.

Key Features

• High voltage construction rated for reliable igniter spark delivery
• OEM replacement kit ensures proper fit and function in supported A.O. SMITH tankless models
• Compatible with both natural gas and liquid propane model variants
• Covers indoor, outdoor, direct vent, and open combustion installation configurations
• Addresses ignition failure and intermittent spark conditions during service calls

Compatibility

Compatible with the following A.O. SMITH tankless water heater models: T-M50 (NG), T-M50 (LP), T-M50-ASME (NG), T-M50-ASME (LP), T-H2S-OS (LP), T-H2S-OS (NG), T-H2-DV (NG), T-H2-DV (LP), T-H2-OS (LP), T-H2-OS (NG), T-H2S-DV (NG), T-H2S-DV (LP), T-D2-OS (LP), T-D2-OS (NG), T-D2-IN (LP), T-D2-IN (NG), T-K4-OS (LP), T-K4-OS (NG), T-K4-IN (NG), T-K4-IN (LP), T-K3-OS (LP), T-K3-OS (NG), T-K3-PRO (LP), T-K3-PRO (NG), T-K3-SP (NG), T-K3-SP (LP), T-K3 (NG), T-K3 (LP), T-KJR2-IN (NG), T-KJR2-IN (LP), T-KJR2-OS (LP), T-KJR2-OS (NG).

Installation Notes

Installation should be performed by a licensed plumber or qualified water heater service technician. Before servicing, shut off the gas supply and disconnect electrical power to the unit. Inspect the igniter and ignition control terminals for corrosion or damage before installing the new cable. Follow the manufacturer service documentation and all applicable local plumbing and gas codes during replacement.

Technical Specifications

• Component Type: High Voltage Igniter Cable Kit
• Fuel Type Compatibility: Natural Gas, Liquid Propane

Standard Information

• Brand: A.O. SMITH
• Manufacturer Part Number: 100074224