Tekmar Controls 303P 3-Zone Priority Switching Relay

The Tekmar Controls 303P 3-Zone Priority Switching Relay is an essential part used in HVAC systems. It effectively controls zone pumps and prioritizes domestic hot water to provide hot water without sacrificing heating performance. It is compatible with boilers and other HVAC equipment, simplifies wiring, and improves system durability. Savings in energy use stem from the relay activating pumps only when the need arises and improving equipment life. It has been designed as a perfect match for residential or light commercial applications with quiet operation, clear diagnostics, and improved comfort when control is achieved to the last zone.