Description
The AERCO 18557-2 is a reverse-acting remote bulb temperature controller engineered for precise temperature sensing and control in commercial hydronic and boiler systems. With a wide operating range of -20°F to 240°F, this control is well suited for demanding heating applications where accurate, reliable temperature management is essential.
Key Features
- Wide temperature sensing range: -20°F to 240°F
- Reverse-acting operation — output decreases as sensed temperature rises
- Remote bulb design allows temperature sensing at a distance from the control body
- Designed for use in commercial HVAC, hydronic heating, and boiler control applications
- OEM-quality AERCO replacement part for compatible systems
Application
The remote bulb configuration allows the sensing element to be installed directly in the medium being monitored — such as a pipe, tank, or duct — while the control body is mounted in a convenient location. The reverse-acting design is ideal for applications where a rise in temperature should trigger a reduction in output, such as cooling valve control or high-limit safety functions in hydronic systems.
Specifications
- SKU: 18557-2
- Brand: AERCO
- Temperature Range: -20°F to 240°F
- Action Type: Reverse Acting
- Sensor Type: Remote Bulb
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