Belimo 22PF-5UG Flow Sensor 320788-703 it often indicates the high

it often indicates the high limit has tripped due to restricted airflow or a failing bimetal snap disc

How do I test the thermopile connection to this valve

As the direct replacement for SC11S

or insufficient pressure differential to slide the internal "canoe

you recognize the importance of precise gap alignment

Belimo 22PF-5UG Flow Sensor 320788-703 it often indicates the highThe Belimo 22PF 5UG Ultrasonic Flow Sensor is a high precision, non intrusive solution designed for accurate flow measurement in HVAC hydronic systems. Featuring a 1 1 2" NPT connection, this sensor utilizes ultrasonic transit time technology to provide reliable readings without the pressure drop or fouling risks associated with mechanical turbine meters. With a rated max flow rate of 47. 5 GPM and a measurement accuracy of + 2%, it ensures optimal