Tekmar 403 tN2 House Control – Boiler, DHW & Setpoint, Mixing, Four zone pumps
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The tekmarNet® 2 House Control 403 is designed to operate all of the mechanical equipment in a residential hydronic heating system, coordinating their operation through network communication. It can be used in applications ranging from a single zone of baseboard with an on/off boiler, to multiple fan coils, mixed radiant floor heating zones, and a modulating/condensing boiler. This control regulates up to two heating water temperatures through Outdoor Temperature Reset and Indoor Temperature Feedback. It is capable of controlling a single on/off, two stage, or modulating boiler, a mixing device, Domestic Hot Water, setpoint loads, 4 on-board zone pumps, and can expand up to 24 zones in total for each space heating water temperature.
Features • Automatic Boiler Differential • Boiler Protection • DHW Post Purge • DHW Priority (optional) • DHW control • Exercising • Expandable up to 48 zones • For use with tekmarNet®2 thermostats ONLY • Four 115 V (ac) powered zone outputs • Indoor Temperature Feedback • One touch overrides (with optional User Switch) • Only requires 2 Wires Per Zone • Outdoor Temperature Reset • Powered pump outputs • Setpoint operation • Single on/off, two stage, or modulating boiler control • System Setback (with optional Timer) • Variable speed, floating action, or proportional mixing control • Warm Weather Shut Down • Zone Synchronization • tN4 expansion terminals