Resideo S87B1016 Ignition Module 320074-702 the circulator itself must be

the circulator itself must be sourced separately based on your system's head pressure and flow requirements

maintaining system efficiency by minimizing pressure drops

As a veteran-preferred pressure indicating gauge

or physical wear of the diaphragm and seals

Rugged Construction: Built to withstand repeated installation and removal during service calls in demanding commercial HVAC applications

Resideo S87B1016 Ignition Module 320074-702 the circulator itself must beThe Resideo S87B1016 is a professional grade Direct Spark Ignition Module engineered for high reliability electronic control in gas fired furnaces, boilers, and commercial heating appliances. Operating on a 24 Vac power supply, this solid state control manages the ignition sequence by generating a high voltage spark for the main burner while simultaneously monitoring for flame rectification. With a 0. 8 second flame failure response time, the module