Robertshaw 10-428 Lead Wire

The Robertshaw 10-428 Lead Wire is a 36-inch high-limit ECO lead engineered for high-temperature safety circuits in commercial water heating and boiler applications. Designed specifically for integration with Robertshaw 700 series gas valves and compatible Energy Cut-Off (ECO) sensors, this HI-limit lead wire ensures a reliable electrical path to interrupt gas flow should the system exceed its thermal safety setpoint. The 36-inch length provides ample reach for complex manifold configurations, while the specialized insulation handles the demanding ambient heat found near combustion chambers. Technicians often source this replacement ECO lead when troubleshooting intermittent gas valve dropouts or during a full thermostat and safety pilot assembly overhaul. Its precise conductivity rating minimizes resistance in the millivolt safety circuit, preventing nuisance shutdowns. Utilizing a robust Robertshaw water heater lead ensures the HVAC safety circuit maintains its integrity, meeting OEM specifications for critical fire-safety interventions in pressurized vessels.

• 36-Inch Reach: Provides sufficient length for versatile routing in large commercial boiler housings and water heater jackets.
• 700 Series Compatibility: Direct fit for Robertshaw 700-series millivolt valves utilizing an ECO safety connection.
• High-Temperature Durability: Engineered insulation protects the lead from thermal degradation in high-ambient environments.
• Reliable Continuity: Low-resistance internal conductor ensures consistent millivolt signal transmission to the electromagnetic power unit.

Will this lead wire work with any Robertshaw gas valve?
This lead is specifically designed for valves equipped with ECO terminals, primarily within the 700 series and specific Unitrol configurations used in commercial boilers.

Can I cut or shorten this wire if the 36-inch length is too long?
It is recommended to coil and secure excess wire rather than cutting it. Altering the factory terminal connections can increase resistance and cause the safety magnet to drop out prematurely.

What are the symptoms of a failing ECO lead wire?
Failing leads often present as a pilot that will not stay lit or a main burner that shuts down unexpectedly due to a break in the millivolt loop or poor terminal contact.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.