this assembly integrates a durable rolled steel frame and an aluminum flange to resist corrosion in demanding mechanical rooms

reducing electrical strain on the control board

not the coil

and circulator fans in residential furnaces

or structurally compromised

Patterson-Kelley 10-0370-0713 Relay 320788-704 this assembly integrates a durableThe Patterson Kelley 10 0370 0713 Time Delay Relay is a critical control component designed for high efficiency boiler systems and water heaters. Engineered for 120V AC applications, this relay provides precise timing intervals to manage sequence of operations, preventing short cycling and ensuring proper post purge or pre purge cycles in the combustion chamber. As a direct OEM replacement part, it maintains the integrity of the original control