ensuring a longer service life in high-cycle commercial HVACR applications

always replace the 47-21900-13 with the exact specified manual reset component

For contractors handling gas pressure testing

it is a flanged detector base that includes a decorative ring to provide a clean finish against the ceiling surface

Weil McLain 383-500-055 Sensor Kit Els PW 17895 ensuring a longer service lifeIdentify and resolve lockout conditions with the Weil McLain 383 500 055 Flue Temp Sensor Kit. Designed for Weil McLain Ultra Series 1 and 2 residential gas boilers, this genuine OEM replacement part is essential for monitoring exhaust gas temperatures and maintaining high efficiency performance. When a flue temperature sensor fails or provides erratic resistance readings, the boiler control module typically triggers a safety shutdown to prevent heat