The FC charge signifies a medium temperature liquid charge

Industrial Durability: Machined from high-grade brass to resist corrosion and thermal degradation in the burner manifold

ensuring seamless HVAC part compatibility during maintenance or new installations

If the existing burner ports are warped or the spark bracket is bent

Cleveland Control AFS-181-43 Switch The FC charge signifies aThe Cleveland Controls AFS 181 43 is a professional grade air flow switch engineered for high accuracy pressure sensing in HVAC, industrial air handling, and process control applications. Functioning as a Single Pole Double Throw (SPDT switch), this unit is designed to monitor positive, negative, or differential air pressure. It features a field adjustable setpoint range of 0. 05" . 02 to 2. 0" w. c., allowing for precise calibration to meet specific