Tekmar Controls 306V Control Panel 321142-301 Replacing a compromised link with

Replacing a compromised link with a genuine 128C rated component is vital for maintaining the secondary limit safety string and preventing permanent damage to the heating elements

also identified as the Series 740 high capacity water relief valve

Technicians must verify furnace model compatibility—including TUD-R-K

Using an AC coil relay will cause chatter or failure of the DC control signal from the logic board

Tekmar Controls 306V Control Panel 321142-301 Replacing a compromised link withThe Tekmar 306V Control Panel is a professional grade, microprocessor based 6 zone valve control designed to manage multi zone hydronic heating systems with precision. As a veteran preferred solution for complex residential and light commercial layouts, this hydronic zone controller supports up to six thermostats and operates six independent 24V zone valves. The unit features a dedicated priority on Zone 1, allowing for seamless integration of an