Belimo AFRBUP Actuator R-410A it provides various airflow taps

it provides various airflow taps to optimize cooling and heating BTUs

a dedicated flame sensor for flame rectification monitoring

What is the thread size for identifying this ignitor

What is the benefit of using a prefilter vs

Belimo AFRBUP Actuator R-410A it provides various airflow tapsThe Belimo AFRBUP Actuator is a heavy duty spring return damper actuator designed for reliable fail safe operation in commercial HVAC systems. Delivering 180 in lb torque, this unit provides the necessary force for positive close off on airtight dampers. A key technical advantage is its universal power supply, accepting 24 to 240 VAC (or 24 to 125 VDC), which simplifies inventory for technicians and ensures compatibility across various job site