this brass air vent is specifically engineered for hydronic (water and glycol) systems

Installation should follow the schematic on the 70556312 nameplate

maintaining a low power footprint of 3 VA (nominal) and 4 VA (inrush)

Technicians typically look for evaporator coil icing

Johnson Controls A-4000-146 Filter

Siemens Building Technology SKC62UA Actuator 322055-301 this brass air vent isEngineered for high performance fluid control, the Siemens SKC62UA actuator is a heavy duty electro hydraulic valve actuator designed for seamless integration with Siemens Flowrite and other 40mm stroke globe valves. Operating on a 24VAC actuator power supply, this unit provides a formidable 1000 lbf (2800 N) of positioning force, making it the standard for critical HVAC and industrial applications where reliable shut off is non negotiable. The