The unit supports up to 3 ON/3 OFF settings per day using removable trippers

this 7/8" sweat ODF unit eliminates the need for external check valves

which is critical for consistent thermocouple heating and rapid main burner ignition

you must never replace a 440V unit with a 370V unit

Reznor 193806 Switch Els PW 17895 The unit supports up toEnsure reliable sequence of operation with the Reznor 193806 Switch, an OEM grade low air pressure switch kit engineered for precise combustion airflow monitoring. Designed with a dual SPDT (Single Pole Double Throw) contact form, this field replaceable component features a fixed 0. 20" WC sensitivity, serving as a critical safety interlock to verify proper inducer draft before burner ignition. The Reznor 193806 is built with a rugged housing and a 1