The S1-025-31813-000 ensures that if the system experiences restricted airflow—often due to a clogged filter or a failing secondary heat exchanger—the circuit breaks before the unit sustains damage

compatibility is based on the sleeve diameter and height

System Security: Prevents hazardous gas accumulation by initiating an immediate safety shutdown if the flame is not detected within seconds of ignition

Smith high-efficiency water heating units

the MARS 12745 includes an internal UL-recognized pressure-sensitive interrupter for fail-safe protection

Veris Industries H-921 Current Transducer 30067439-890 The S1-025-31813-000 ensures that ifThe Veris Industries H 921 Current Transducer, also referred to as the H921, is a high performance split core current sensor designed for accurate load trending in industrial and commercial building automation systems. Built for the veteran technician, this loop powered device eliminates the need for separate external power supplies by inducing energy directly from the monitored conductor to generate a proportional 4 20mA output. This 2 wire