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This furnace flame sensor acts as a primary safety component
The control is a true delay-on-make
Standard Compliance: Fully meets ASME B16
the PT1 maintains thermal stability for hot pipes up to 158°F (70°C)
operating on either 12Vdc or 24Vdc regulated power supplies or full-wave rectified (FWR) unfiltered circuits
Rheem-Ruud 42-21593-02 Sequencing Relay This furnace flame sensor actsFor service technicians managing multi stage electric heat or residential blower delays, the Rheem Ruud 42 21593 02 Sequencing Relay functions as a critical OEM control component. This 24V SPDT Sequencing Relay is engineered with a C65 95 timing specification, ensuring precise contact closure and opening cycles to prevent line side surges during startup. The device features a single pole double throw configuration, allowing for versatile field wiring
