Johnson Controls A28AA-20 Temperature Control Refrigerant though sharp kinks should be

though sharp kinks should be avoided to prevent damage to the vapor charge

Universal Compatibility: Interchanges seamlessly with K16FA-24H and replaces older 17D

The actuator should be mounted above the valve body when installed in horizontal piping

Replacing the heat exchanger gasket during routine teardowns prevents costly site visits and preserves the hydraulic integrity of the HVAC hydronic system

Johnson Controls A28AA-20 Temperature Control Refrigerant though sharp kinks should beThe Johnson Controls A28AA 20 is a heavy duty two stage temperature control designed for multi stage heating or cooling applications in commercial refrigeration and HVAC systems. Featuring dual SPDT switches, this controller allows for independent sequencing of equipment loads, making it ideal for managing staged compressor banks or ventilation systems. The unit operates across a wide voltage range, including 120 208 240 277 Vac, ensuring