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The 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
the switch itself is typically a separate component unless otherwise specified in your model's parts breakdown
The robust construction includes screw terminal connections and 1/4 inch quick-connect coil terminals
Common Questions: Is the York S1-129334 compatible with R-410A systems
Durable SPST Design: Features robust internal contacts designed for high-cycle industrial and commercial environments
Modine 3H0372660006 Conversion Kit 321894-708 The Johnson Controls A28AA-20 isThe Modine 3H0372660006 Conversion Kit is a critical OEM component designed for the precision field conversion of select Modine unit heaters from natural gas to liquid propane. For technicians managing fuel source transitions in commercial or residential settings, this Modine LP conversion kit provides the exact gas orifices and regulator spring required to maintain proper manifold pressure. Engineered for high efficiency HVAC performance, the kit