ICM870-32A Soft Start

Important Safety Information

HIGH VOLTAGE WARNING – Always turn off power at the main service panel before installing.

CAUTION: The ICM870-32A must be mounted in an area where it will not be exposed to water or the elements. Exposure of the ICM870-32A soft start to water can cause failure of the control and is a risk for fire or other electrical safety hazards.

Suitable for use on a circuit capable of delivering not more than 5,000 rms symmetrical Amperes, 240 V maximum when protected by a circuit breaker having not more than 40 A, 240 volts maximum.

Installation of any ICM870-32A soft start must be done by a certified HVAC technician or licensed electrician. All installations are to be done in accordance with local, state, and national electrical codes.

Features

• Starting current reduction and self-learning algorithm
• Built-in start capacitor
• Over-current protection
• Over/under voltage monitoring
• Diagnostic indicators
• Sealed enclosure

Application

The ICM870-32A is intended for Marine, Recreational Vehicle, HVAC and commercial applications. The ICM870-32A integrates compressor in-rush current over startup time, thus reducing peak current demand on a power supply source (generator or other). The ICM870-32A will monitor system health including voltage, current, compressor startup and self integrity. Upon a fault condition, the ICM870-32A will halt operation and initiate a 3 minute anti-short cycle routine while providing diagnostic fault information by means of an LED indicator.

Specifications

Semi-Conductor Soft-Start Motor Controller, Form 2, Bypassed Controller

• SCCR: 5kA
• Ue = 240 VAC
• Ui = 240 VAC
• Uimp = 4kv
• Pollution degree 3

Input (L1, L2) – 100-240 VAC 50/60Hz

• Over voltage limits: 115 VAC nominal = 140 VAC, 240 VAC nominal = 264 VAC
• Under voltage limits: 115 VAC nominal = 95 VAC, 240 VAC nominal = 195 VAC

Outputs: Compressor

• Solid state/relay
• Current: Max. nominal = 32A
• Over current limits: ICM870-32A = 40A

Environmental:

• Ambient temperature: 40°C @ 32 FLA, 8 hour duty
• Storage temperature: -40°F to 149°F (-40°C to 65°C)
• Humidity: 0-95% non-condensing
• Enclosure: IP65
• Dimensions: 7.94" x 4.20" x 2.10"
• Screw hole center points: 7.36" x 2.97"

ICM870-32A Comparable Amperage Crosses

The ICM870-32A model crosses to the comparable amperage models from the following manufacturer's:

• Micro-Air (Easy Start)
• Dometic (Smart Start)
• Network RV (Soft Start)
• Hyper Engineering (Sure Start)

Standard and Test Results

• UL 60947-1
• UL 60947-4-2
• Altitude: 2000 m
• IP65
• CSA C22.2 NO. 60947-1
• CSA C22.2 NO. 60947-4-2

LED Indicators

START = Green • RUN = Green • FAULT = Red (flashing)

Fault Codes

Wiring Diagrams

For Residential A/C's

Wiring Diagram (General Layout)

A diagram shows the ICM870-32A Soft Start connected to a compressor, capacitor, and contactor for a residential A/C unit. It illustrates the connections for the black, red, blue, and brown wires from the Soft Start to the respective terminals on the compressor and capacitor.

For RV & Marine A/C's

Wiring Diagram (General Layout)

A diagram shows the ICM870-32A Soft Start connected to a compressor, capacitor, and contactor for an RV or Marine A/C unit. It illustrates the connections for the black, red, blue, and brown wires from the Soft Start to the respective terminals on the compressor and capacitor. A note indicates to remove the compressor run winding wire from the common run capacitor / L2 terminal and splice it to the ICM870 Brown Wire.

Special attention should be made with respect to the termination of the field wiring leads. When these leads are terminated at a terminal, they shall terminate only at a terminal suitable for minimum 90°C wire.

Installation

For Residential A/C's

1. Connect the (ICM870 RED WIRE) > to the run capacitor terminal (c/common/T2)
2. a) Disconnect factory installed compressor run wire from the contactor terminal (T2/L2)
3. b) Splice the (ICM870 BROWN WIRE) > to the compressor run wire previously disconnected in (Step 2A). If there is a Start Capacitor and or PTCR already in place, additional steps will be required to disconnect.
4. Connect the (ICM870 BLUE WIRE) > to the run capacitor terminal (herm/hermetic/start)
5. Connect or splice the (ICM870 BLACK WIRE) > to the contactor terminal (T1)

For RV & Marine A/C's

1. a) Disconnect factory installed compressor run wire from the common run capacitor / L2 terminal
2. b) Splice the ICM870 BROWN WIRE > to the factory installed compressor run wire previously disconnected in step #1A. If there is a Start Capacitor and or PTCR already in place, additional steps will be required to disconnect them.
3. ICM870 RED WIRE > to the run capacitor (c/common/L2) terminal
4. Connect the ICM870 BLUE WIRE > to the run capacitor (herm/hermetic/start) terminal
5. Splice the ICM870 BLACK WIRE > with the factory install compressor Overload Switch wire (OL/L1)

Which Model Do I Need?

• ICM870-9A: For AC's with a Compressor Rated Load Amps (RLA) of up to 9A
• ICM870-16A: For AC's with a Compressor Rated Load Amps (RLA) of 9.1-16A
• ICM870-32A: For AC's with a Compressor Rated Load Amps (RLA) of 16.1-32A

This chart reflects average conversions of Single-Phase Air Conditioning and Heat Pump Tonnage, BTU's, HP, and RLA. Please refer to your user manual or service panel to determine your actual RLA before deciding which model ICM870 you need.

Air Conditioning & Heat Pump Loads - Average