Description
The Taco SR503-5 3-zone Next Generation Switching Relay is an electrical control component that manages multiple heating or cooling zones within HVAC systems. It is installed in hydronic heating systems, radiant floor loops, or multi-zone air handling units to control zone valves and circulator pumps based on thermostat signals. This coordinates up to three zones, provides priority for designated circuits, and can be expanded to accommodate additional zones. It enables precise temperature control across different areas, ensuring that each zone receives the required heating applications.
