Johnson Controls A28AA-29 Temperature Control R-410A the integrated overflow switch includes

the integrated overflow switch includes 1/4-inch quick-connect terminals

and 135 PSI for light oil

High-Integrity Grounded Coil: Ensures stable magnetic field generation and reliable circuit grounding for long-term field performance

this unit utilizes a mid-point ground configuration to ensure balanced electrical stress across the secondary windings

this specific part number is engineered for vertical furnace drain pan applications

Johnson Controls A28AA-29 Temperature Control R-410A the integrated overflow switch includesThe Johnson Controls A28AA 29 is a heavy duty two stage temperature control designed for precise cycling of multiple HVACR components. Featuring 2 SPDT switch action, this mechanical thermostat allows for sequenced control of heating, cooling, or ventilation equipment across a broad 30 to 100 degree setpoint range. For technicians replacing legacy components, the A28AA 29 serves as the direct Johnson Controls A28AA 81 replacement, maintaining exact