Common Questions: Is the Lennox 78H55 a direct replacement for the 78H5501

Does this unit require a specific replacement element

Its compact footprint and screw terminal connections simplify the wiring process for field contractors

How do I adjust the pressure differential on this control

Robertshaw 1720-801 Head Assembly Els PW 17895 Common Questions: Is the LennoxThe Robertshaw 1720 801 is a critical TS J Safety Magnet Head Assembly engineered for Unitrol gas valves utilized in residential and commercial water heating systems. Designed to facilitate precise thermocouple to valve connection, this drop in replacement ensures the pilot flame monitoring circuit maintains system integrity during combustion cycles. In technical field applications, the 1720 801 operates on a millivolt signal generated by the