Zone Thermal Actuator

An Introduction to Zone Thermal Actuator

What is it?

Zone thermal actuators, also known as thermoelectric actuators or thermal valves, are devices that regulate the flow of hot water or chilled water in heating and cooling systems. They can be used to control temperature levels in different zones or areas of a building.

Why we use it?

We use zone thermal actuators to improve occupant comfort, optimize energy usage, and ensure system performance by regulating the flow of water in HVAC systems.

How it works?

The actuator typically contains a thermoelectric element, which expands or contracts based on the temperature of the water flowing through it. This movement is translated into linear motion, which moves a valve to control the flow of water.

Major brands that manufacture it

Some of the major brands that manufacture zone thermal actuators include Caleffi, Danfoss, Honeywell, and Siemens.


There are different types of zone thermal actuators, including on/off and proportional models, with various voltage and current ratings to fit different applications.

How do we select it?

When selecting a zone thermal actuator, consider factors such as response time, power supply requirements, compatibility with the valve assembly, and communication protocols. Also, make sure the actuator is compatible with your existing control and automation systems.

How to install it?

Zone thermal actuators should be installed on the valve assembly according to the manufacturer's recommendations. They should be securely mounted using appropriate fittings or adapters, and any necessary wiring connections should be made to the building automation system or controller.

Wire connections required to receive the signals

The wire connections required to receive the signals from a zone thermal actuator may vary depending on the specific device and building automation system. Typically, they will require a power supply connection and a communication signal wire that connects to the building automation system or controller. It's important to refer to the manufacturer's installation instructions for proper wiring connections.

in MEP
Zone Thermal Actuator
Administrator December 22, 2023
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