ICM870-9A MOTOR STARTER soft start

he ICM870 series soft starts ARE compatible with 2-stage HVAC units. If your 2-stage unit has two compressors, you will need two ICM870 units.

The ICM870 Soft Start is intended for residential, commercial, RV & marine applications. The ICM870 integrates compressor or motor in-rush current over startup time, thus reducing peak current demand on a power supply source by up to 70%.

Effectively reducing power draw to the A/C, the ICM870 utilizes a built-in self learning algorithm to deliver the optimal in-rush current per application. The ICM870 will monitor system health including voltage, current, compressor startup and integrity. Upon a fault condition, it will halt operation and initiate a 4 minute anti-short cycle routine while providing diagnostic fault information by means of an LED indicator.

NOTE:

The ICM870 Series Soft Starts are NOT recommended to be used with air conditioners or heat pumps which have control boards that sense compressor current and perform a lock out for fault conditions.

Any Air Conditioner or Heat Pump which has a Comfort Alert control board or an Emerson Core Sense Module installed are not directly compatible for use with the ICM870 Series Soft Start.

The Emerson CoreSense module can be bypassed when using the ICM870 Series Soft Starts. Unfortunately, the circuit board and kit style Comfort Alert cannot be bypassed and therefore, ICM870 cannot be used.

Examples of a Control that can be Bypassed:

Features & Benefits

• Reduces in-rush current/draw necessary at startup by up to 70%
• Prolong the life of the A/C by reducing excessive torque, wear and tear
• Built-in dynamic start delay
• Reduce loud noises, light flickering, and breaker trips
• Built-in self-learning algorithm 
• Over-current protection 
• Over/under voltage monitoring 
• Built-in start capacitor 
• LED fault indicators 
• Ultrasonic sealed tamper-proof enclosure
• Installation hardware is included

Which Model Do I Need?

Refer to your service panel or user manual to determine your actual RLA rating.

ICM870-9A: For use with a Compressor Load Amp Rating (RLA) of up to Maximum of 9A

ICM870-16A: For use with a Compressor Load Amp Rating (RLA) of 9.1-16A Maximum

ICM870-32A: For use with a Compressor Load Amp Rating (RLA) of 16.1-32A Maximum

Please DO NOT assume it is acceptable to upsize the ICM870-9A or ICM870-16A to the largest size (ICM870-32A) when you are unsure of the RLA current or when the current is close to the limit of the ICM870-16A. This practice will defeat the benefit of the Inrush reduction on smaller systems under 16 Amps and defeat the over current safety limit by allowing for a 20A trip point for over current on the ICM870-32A compared to an 11.25A trip point on the ICM870-16A. PLEASE choose the ICM870 based on RLA or by using the size vs tonnage chart shown.

*This chart is intended as a quick reference only. It reflects the average Single-Phase Air Conditioning and Heat Pump conversions of Tonnage, BTU’s, and RLA. Please refer to your service panel or user manual to determine your equipment’s actual RLA rating before deciding which model ICM870 you need.

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