Johnson Controls A19EAF-2 SPDT Flange Mounted Duct Temperature Thermostat 30°F/110°F

The Johnson Controls A19EAF-2 SPDT Flange Mounted Duct Temperature Thermostat is a single-stage remote bulb thermostat designed to manage temperature within air handling units, rooftop units, make-up heaters, and duct heaters [1]. It uses a remote temperature sensor bulb placed directly in the airflow to monitor air temperature. Once the temperature reaches the user-set limits, the thermostat triggers the connected HVAC equipment to turn on or off, maintaining consistent temperature. This single-stage operation means the heating or cooling system will operate at full capacity until the desired temperature is reached. The A19EAF-2 boasts a wide temperature range of 30°F to 110°F, making it suitable for various heating and cooling applications. Due to its flange-mounted design, the A19EAF-2 offers adjustable positioning of the temperature bulb within the duct for optimal temperature sensing.