Description
The Tekmar Controls 303V 3-Zone Valve Control is a control panel that manages multiple zone valves and coordinates heating demand in hydronic HVAC systems. This unit supports up to three thermostats and operates three zone valves, with 24V control compatibility and integrated end switches rated at 24 VAC, 5 A for system coordination. It also provides features such as zone priority, pump control, and a 0–10V or 4–20 mA signal for modulating boiler communication. Placed in boiler or mechanical rooms, it acts as the central control interface for zoning, ensuring proper distribution of heat and coordinated pump operation.
