As a veteran-grade Raypak replacement part

When the temperature drops to the 26°F setpoint

Common Questions & Technical Insights: Is the 168078 compatible with R-410A systems

standard HVAC practice is to inspect the existing limit switch (often part number 626513R) and reuse or replace it separately depending on its condition

making it a staple for any industrial steam system maintenance professional

Burnham Boiler 8010801 Aquastat 30067439-890 As a veteran-grade Raypak replacementThe Burnham Boiler 8010801 Aquastat is a high limit immersion controller engineered for precision temperature regulation in hydronic heating systems. Calibrated specifically for a 150F temperature setpoint, this OEM component is a critical safety and efficiency device for Burnham Alliance water heaters and compatible boiler configurations. It functions as a single pole, single throw (SPST) switch that breaks the circuit on temperature rise, preventing