Johnson Controls A28AA-36 Temperature Control Freon Built for durability in the

Built for durability in the field

Designed for closed-loop hydronic heating and cooling

Ensure you have 24VAC at the valve terminals during the ignition trial and verify that the inlet gas pressure meets the minimum system requirements

What are the primary lead colors

Contractor-Friendly Installation: Includes a dual-width mounting track (2

Johnson Controls A28AA-36 Temperature Control Freon Built for durability in theThe Johnson Controls A28AA 36 is a heavy duty two stage temperature control engineered for precision in HVACR applications requiring staged heating or cooling. This A28 Series manual reset thermostat features two SPDT switch actions, allowing for independent circuit control over a wide voltage range of 120 208 240 277 Vac. Built with a 40 90 degree setpoint range, the unit maintains a fixed 3 degree differential for each stage, with an adjustable 2 7