ICM Controls ICM325A Pressure Control

For technicians maintaining head pressure in demanding conditions, the ICM325A Low Ambient Head Pressure Control provides a professional-grade solution for single-phase motor speed modulation. This unit is a direct replacement for ICM325HN-LF, ICM325HNV-LF, CNT6622, and CNT08566, allowing for seamless field upgrades. Unlike basic on/off switches that cause system hunting, the ICM325A utilizes NFC technology via the ICM OMNI App for precise configuration of parameters. It manages line voltages from 120-600 VAC and includes an integral heat pump bypass to ensure the speed control is neutralized during the heating cycle. By monitoring liquid line temperature or pressure across up to three circuits, it eliminates evaporator freeze-ups and compressor slugging. The hard start feature ensures the fan motor overcomes initial inertia, while the low-temperature bypass provides flexibility during extreme cold starts.

• Universal Voltage Compatibility: Operates on 120-600 VAC line voltage and 24-240 VAC control voltage with jumper-enabled settings.
• Dynamic Modulation: Provides precise fan speed modulation based on a 70?F to 100?F range, maintaining stable head pressure.
• NFC Configuration: Simplifies setup by allowing technicians to adjust hard start times and low-speed cutoffs via a smartphone.
• Multi-Circuit Support: Capable of controlling up to three separate refrigeration circuits for commercial A/C and heat pump systems.
• Robust Environmental Rating: Built to operate in ambient temperatures ranging from -40?F to +176?F.

Is the ICM325A compatible with PSC and ECM motors?
The ICM325A is designed for single-phase PSC (Permanent Split Capacitor) motors. Always verify that the motor is rated for speed control via voltage reduction before installation.

Does this unit require a separate transformer for the control circuit?
No, it features an isolated 24 VAC power supply and can accept a wide range of control voltages (24-240 VAC), making it adaptable to most logic circuits.

How do I bypass the control during the heat pump heating mode?
The unit includes dedicated heat pump bypass circuitry. When energized by the reversing valve signal, it forces the fan to full speed to prevent high-pressure trips during heating.

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.