Robertshaw 780-790 HSI Module Els PW 17895 this is the direct manufacturer-specified

this is the direct manufacturer-specified upgrade

The Schneider Electric (Erie) VT3213G13B020 Valve Assembly is a contractor-grade solution for precise hydronic flow control in fan coils

it is built to handle elevated operating temperatures in continuous duty cycles

Is the 93J3901 different from the 93J39

capable of handling deep vacuum and high-side pressures up to 5

Robertshaw 780-790 HSI Module Els PW 17895 this is the direct manufacturer-specifiedFor field techs dealing with intermittent ignition failures or flame sensing issues on gas fired heating systems, the Robertshaw 780 790 HSI Module provides a reliable, direct replacement solution. This hot surface ignition control is engineered to drop into tight control cabinets, serving as the primary replacement for the HS780 17NL 304A as well as the 104A and 108A variants. Operating on a standard 120V AC ignition system, the module features a