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The Tekmar Controls 303V is a zone valve control designed to operate multiple zone valves in a hydronic heating system. It connects to three thermostats to provide heating where needed. The 303V activates a system pump when any zone valve opens, ensuring efficient heat distribution. Zone 1 has the option to control either a valve or a circulator, giving it priority for heating an indirect domestic hot water tank. This model includes features to prevent pump seizure during inactive periods, and it has post-purge capabilities for maximum energy efficiency.
Optimized for hydronic heating systems, the Tekmar Controls 303V provides flexibility and efficiency in managing multiple heating zones.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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