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Modern Hotel Room

7-Wire FCU + Integrated ERV Control Board

Integrated Comfort Control. Fresh Air Management. Proven Reliability.

Comfort & Ventilation Control on a Single Platform

The Omachron® Controls 7-Wire FCU + Integrated ERV Control Board combines fan coil control and energy recovery ventilation management on a single platform, providing manufacturers with a practical solution for applications that require both occupant comfort and controlled fresh air delivery. Built around conventional 24VAC 7-wire architecture, it delivers the reliability, familiarity, and serviceability HVAC professionals depend on while supporting modern indoor air quality requirements

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Reducing Complexity Through Integration

Supporting four-speed fan operation, heating and cooling control, fresh air management, ECM motor control, 6-way valve integration, dedicated ventilation outputs, and comprehensive equipment protection functions, the 7-Wire FCU + Integrated ERV Control Board is well suited for residential, healthcare, and education-focused HVAC applications.

Control

Conventional parallel using 7-Wire 24VAC

Analog Inputs

ERV Fresh Air Temperature 10k Thermistor

Auxiliary Temperature Input 1 (Future Freeze)

Auxiliary Temperature Input 2 (Future Supply Temperature)

Digital Inputs

Flood

Float

Low Voltage Timer

Freeze

Aquastat

Auxiliary Input

Analog Outputs

ERV Fresh-air Fan (0-10VDC)

ERV Stale-air Fan (0-10VDC)

ECM Control (0-10VDC)

6-Way Valve Control (0-10VDC)

Digital Outputs

W/Y Valve

Y Valve

E-Heat

Damper

Fan High

Fan Medium

Fan Low

Fan Ultra-Low

Certifications

UL 94V-0 Flame Retardant Certified

Designed for Manufacturers. Built for Reliability.

The Omachron® Controls 7-Wire FCU + Integrated ERV combines proven thermostat compatibility with advanced ventilation and hydronic control capabilities, delivering a dependable platform for OEMs developing next-generation fan coil systems.

Integrated ERV & Ventilation Management

Dedicated 0-10VDC outputs support both fresh-air and stale-air ventilation fans, while integrated damper control helps coordinate airflow management. Additional temperature sensing capabilities enable more intelligent ventilation operation and improved indoor air quality performance.

EC Motor & 6-Way Valve Compatibility

Integrated 0-10VDC outputs provide direct support for ECM blower motors and 6-way valves, enabling precise airflow and hydronic control. Manufacturers can support modern HVAC system architectures without requiring additional control hardware.

Expanded Temperature Monitoring

In addition to ERV fresh-air temperature sensing, the board supports auxiliary temperature inputs for future freeze protection and supply air monitoring applications. These capabilities provide greater flexibility for evolving equipment designs and operating sequences.

​Comprehensive Equipment Protection

Integrated flood detection, float monitoring, freeze protection, aquastat functionality, low-voltage timer inputs, and auxiliary safety monitoring help protect equipment and support dependable operation throughout the life of the system.

Have Questions About The 7-Wire FCU + Integrated ERV Control Board?

Selecting the right control platform is critical to equipment performance, ventilation effectiveness, and long-term serviceability. Whether you're developing new HVAC equipment, integrating energy recovery ventilation into a fan coil platform, or evaluating control options for a specific application, our team is here to help. Submit your project details below and we'll work with you to identify the best Omachron® Controls solution for your requirements.

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