Taco®, ZVC406-5, Zone Valve Control Module, 6, 120 V

Taco ZVC406-5 – 6-Zone Valve Control Module, 24V with Priority and Diagnostic Features

The Taco ZVC406-5 is a 6-zone valve control panel engineered for hydronic heating systems that utilize 2-, 3-, or 4-wire zone valves. This control module consolidates wiring and streamlines zone management by integrating thermostat, transformer, and valve connections into a single, contractor-friendly enclosure.

Designed to support up to six individual heating zones, the ZVC406-5 features priority override, end switches, and external diagnostics to aid in installation and service. The PC board layout is optimized to reduce wiring errors and installation time on site.

Key Features

• Six-Zone Capacity: Supports up to six 24V zone valves with individual thermostat inputs
• Built-In Transformer: Factory-installed 40VA transformer powers thermostats and valve actuators
• Switchable Priority Zone: Dedicated DHW or priority heating zone can be enabled or disabled as needed
• Dual Isolated End Switches: Allows independent control signal outputs to boilers or pumps
• LED Indicators: Provides real-time feedback on zone call and end switch status for faster troubleshooting
• Fuse Protection: Field-replaceable fuses safeguard control and transformer circuits
• Expandable: Compatible with additional ZVC or SR series panels for multi-zone systems

Technical Specifications

• Model: ZVC406-5
• Zones: 6
• Voltage Input: 120V AC
• Control Voltage: 24V AC
• Output Power: 40VA
• Mounting: Wall-mounted enclosure with terminal screw connections
• Agency Listings: UL and CSA certified

Installation Considerations

The Taco ZVC406-5 is intended for professional installation in residential or light commercial hydronic heating systems. All thermostat and valve wiring should be performed with power disconnected. Follow VA load requirements to avoid transformer overload. The enclosure is designed for indoor use and surface mounting in mechanical rooms or equipment closets.

Application Notes

This model is ideal for zoned baseboard, radiant, fan coil, or panel radiator systems requiring centralized valve control. The integrated end switches provide reliable boiler or circulator actuation without the need for additional relays.