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or a failure to open when the 120V signal is confirmed at the terminals
crisp response to thermostat signals
the 1000-ohm reference at 32°F ensures reliable building automation integration and energy-efficient climate control
The B330 typically supports a close-off pressure of 200 psi
Tekmar Controls 402 Control 322055-301 or a failure to openThe Tekmar 402 House Control provides precise management for hydronic heating systems, operating on a 24Vac power supply. This versatile tN2 communication hub is engineered to coordinate a single boiler, domestic hot water (DHW) generation, and a setpoint load. It is capable of managing mixing valve control or up to four zone valves directly. The unit supports outdoor reset technology to optimize fuel efficiency by adjusting boiler water temperatures
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