Zone Valve Controller with Circulator Priority.

Argo AZ-4CP 4-Zone Valve Control – 120V Panel for Hydronic Zone Management

The Argo AZ-4CP is a 120V zone valve control panel designed to manage up to four hydronic heating zones. Engineered for use in multi-zone residential and light commercial systems, it offers centralized control of low-voltage zone valves with integrated priority settings and pump relay management.

This unit features SPST relay switching, a 40 VA transformer, isolated end switches, and LED indicators for each zone. Field-selectable configurations allow system adaptation based on jobsite requirements. The AZ-4CP supports seamless wiring to thermostats, zone valves, and circulator pumps while providing boiler and pump call outputs.

System Features

• Zone Capacity: Controls up to four separate hydronic heating zones
• Pump Priority Control: Assigns priority to the system pump or indirect domestic hot water zone
• LED Status Indicators: Green zone call LEDs provide visual feedback through the panel cover
• Relay Type: SPST (Single Pole, Single Throw) per zone
• Isolated End Switch: Ensures electrical separation between the boiler and control logic
• Field-Selectable Options: Configurable priority and post-purge settings

Technical Specifications

• Model: AZ-4CP
• Primary Voltage: 120 VAC
• Control Voltage Output: 24 VAC (via internal 40 VA transformer)
• Total Current Draw: 7.2 A
• Frequency: 60 Hz
• Dimensions: 8 in W × 4 in H

Installation Requirements

The AZ-4CP is designed for surface mounting near the boiler or system control center. All terminals are labeled for compatibility with thermostats, actuators, and boiler inputs. Installation should be performed by licensed HVAC technicians to ensure system integrity, proper wiring, and code compliance.

Additional Capabilities

• Zone Valve Terminals: Simplifies wiring and provides consistent terminal layout for all zones
• Data Port Terminal: Allows connection to the Argo DPM-2 panel-mounted display module for advanced monitoring
• Priority Pump Relay: Enables isolation or emphasis of a specific zone or system pump

Professional Use Notes

The Argo AZ-4CP is built to streamline hydronic zone valve integration in multi-zone systems. Its modular layout and diagnostic indicators reduce setup time and support field service efficiency. The panel is ideal for projects requiring direct control of 24V zone actuators with integrated priority logic.