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Tekmar 420 Boiler Reset Module - One tN4, Boiler, DHW & Setpoint

$ 423.90

The Boiler Reset Module 420 is designed to operate all of the mechanical equipment in a hydronic heating system, except for zones, 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 radiant floor zones with a modulating/condensing boiler. This control regulates one space heating water temperature through Outdoor Temperature Reset and Indoor Temperature Feedback. It is capable of controlling a single on/off or modulating boiler, Domestic Hot Water, setpoint loads, and can expand up to 24 zones in total.

Features
• Automatic Boiler Differential
• Boiler Protection
• DHW Post Purge
• DHW Priority (optional)
• DHW control
• Exercising
• Indoor Temperature Feedback
• One touch overrides (with optional User Switch)
• Outdoor Temperature Reset
• Powered pump outputs
• Setpoint operation
• Single on/off, or modulating boiler control
• System Setback (with optional Timer)
• System control for up to 24 zones
• Warm Weather Shut Down
• Zone Synchronization

Click to View Submittal Sheet
Click to View Installation Manual
Click to View Wiring Brochure

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