leak-proof pneumatic control circuit in demanding building automation environments

guaranteeing direct-fit installation on existing burner brackets

the white wire serves as the common for all primary voltages

Common Questions What causes this motor to hum but not start

Carrier 320711-303 Limit Shield 320720-756 leak-proof pneumatic control circuit inThe Carrier 320711 303 Limit Shield is a critical OEM component designed to protect the high limit switch from direct flame impingement and excessive heat radiation within the furnace heat exchanger assembly. Engineered for precise fitment in Carrier, Bryant, and Payne gas furnaces, this shield ensures systemic integrity by preventing premature limit switch tripping or thermal fatigue. It serves as a thermal barrier, maintaining the necessary