KMC Controls REE-4002 Relay Module

The KMC Controls REE-4002 Relay Module is a purpose-built control interface designed for VAV fan-powered induction boxes and terminal unit management. Engineered for precise coordination between airflow and thermal demands, this module integrates a single-stage fan control with 2-stage electric reheat capabilities. When paired with a direct-acting CTE series room thermostat, the REE-4002 allows technicians to fine-tune the fan start point between 0 to 3,000 FPM using an onboard potentiometer and a standard voltmeter. This adjustability ensures the system maximizes the use of warm return air from the plenum before energizing the reheat coils, significantly improving operational efficiency.

Built for the rigors of commercial HVACR environments, the REE-4002 features three triac outputs, each rated for 10 VA @ 24 VAC. The low-voltage 24 VAC supply and flame-retardant plastic enclosure make it a standard choice for field replacements and new installations alike. The two reheat stages are factory-calibrated to actuate sequentially following the fan start, providing a staged response if the ambient temperature continues to drop. For contractors, the terminal block supports 14-22 AWG wiring, facilitating a clean and reliable connection within the control cabinet.

• Adjustable Airflow Logic: Onboard potentiometer allows the fan start point to be set between 0 and 3,000 FPM for optimized plenum heat recovery.
• Multi-Stage Control: Manages a single-stage fan and two sequential stages of electric reheat from a single low-voltage relay module.
• Reliable Triac Outputs: Each of the three circuits is capable of handling contactors up to 10 VA at 24 VAC, ensuring stable switching for heating components.
• VAV Compatibility: Designed specifically for seamless integration with VAV fan box systems and direct-acting thermostats.

How do I adjust the fan start point on the REE-4002?
Technicians can calibrate the fan output by using a voltmeter in conjunction with the onboard potentiometer. This allows you to scale the start point to the specific airflow requirements (0-3,000 FPM) of the induction box.

What thermostat is compatible with this relay module?
The REE-4002 is designed to function with direct-acting CTE series room thermostats or similar controllers providing a compatible VDC signal for 2-stage reheat sequences.

Can this module handle high-voltage heating elements directly?
No, this is a pilot-duty control module. The triac outputs are rated for 10 VA @ 24 VAC and are intended to switch the coils of larger contactors that handle the primary heating load.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.