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

featuring a fixed 165 psi opening point and a 130 psi closing point

the 1-5/8 inch copper tee represents the industry standard for durability and dimensional accuracy in complex piping layouts

The unit covers a wide 30 to 110 degree F setpoint range with a tight 2 degree F fixed differential

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