Johnson Controls A28AA-36 Temperature Control Els PW 29614 As an essential boiler replacement

As an essential boiler replacement part

ensuring reliable performance in closed-loop chilled and hot water systems

blocked return

As the direct updated replacement for the 033199-0539

Johnson Controls A28AA-36 Temperature Control Els PW 29614 As an essential boiler replacementThe 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