Johnson Controls R-3710-2010 Restrictor

The control manages a standard induction-type circulating fan with a 5-second cool fan on delay and a selectable 0 or 60-second cool fan off delay to maximize system efficiency

This specific power assembly is charged and calibrated specifically for R12 refrigerant applications to maintain the correct pressure-temperature relationship

Can I use this on different Ultra boiler sizes

This SPST (Single Pole Single Throw) fixed-temperature high-limit switch is calibrated to trigger at 250 degrees Fahrenheit

Watts 0226080 Low Water Cut Off R-410A Johnson Controls R-3710-2010 RestrictorAs a veteran tech, you know that keeping a steam boiler safe means having a reliable low water cut off you can trust. The Watts 0226080, specifically the SAN89S model, is a heavy duty float and switch assembly designed for rapid field servicing without disturbing your existing pipework. This single switch assembly features a rugged SPST switch (Single Pole Single Throw) configuration, making it the industry standard for 15 psi steam applications where