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Professionals frequently specify the B329 for AHU and fan coil units where zero leakage and accurate modulation are critical for system efficiency and balancing
Can I use this for Propane (LP) gas systems
What media is compatible with the RLGP-G switch
Built for durability in commercial and residential settings
Johnson Controls A28AA-20 Temperature Control 30067439-890 Professionals frequently specify the B329The 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
US$ 139.97
US$ 324.98