• Argo Universal Control unit
  • Argo UZ3 Unit Interior
  • UZ3 Connections Diagram

Universal Zone Control Series

UZ3 / UZ4 / UZ6

The Universal Zone Control can control your zone pumps, zone valves or both. It is a perfect companion for condensing boilers with three (3) programmable end switches – allowing users to configure a condensing boiler that has multiple inputs such as central heating, DHW and low temperature zone. The control has a dedicated 115 Vac terminal to supply power to a boiler loop pump for primary/secondary piping system. The thermostat connection: Tr-Tw-C can be used to power digital Wi-Fi thermostats as well as power robbing thermostats. It can also be used with any standard efficiency or tankless coil boiler. During a power loss, the digital LCD user display and programming interface maintains programming.


  • 3, 4 or 6- zone control - expandable to 15 zones with plug-in slave modules
  • Control pumps and zone valves within the same system
  • Programmable priority (ON/OFF) for either pumps or zone valves
  • Connects to all types of 24-volt zone valves (two, three or four wire)


EZ1 - 1 Zone Expansion Module

EZ3 - 3 Zone Expansion Module


  • Always have the right control on your service truck
  • Self-diagnostics provide zone status and error messages in text format
  • Installer Test Mode:  Exercises zones and control functions to confirm
    operation without engaging the thermostat
  • Plug-in port to connect to Argo DPM-2 outdoor reset control
  • Clearly marked terminals for easy and accurate installation
  • 100% factory tested
  • 5-Year limited warranty

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