User Guide

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All features and speciﬁcations subject to change without notice.

ICM334

EAD PRESSURE CONTROL

with Temperature and Pressure Inputs

Mode of Operation

After properly installing the ICM334, the three phase motor switch will control a connected motor. Using a temperature sensor and two

pressure sensors, the device will monitor the ambient temperature and pressure inside the system. The monitor will be energized when

there is a Y call.

When the ambient temperature is above 50°F (10°C), the motor will be energized continuously. When the ambient temperature is

below 50°F, the pressure sensor is used to determine whether the motor is turned on or off. When the pressure is 15 psi below the set

pressure, according to the highest reading of the two pressure sensors, the motor will be turned off. When the pressure is 15 psi above

the set pressure, according to the highest reading of the two pressure sensors, the motor will be turned on.

When there is a new Y call the load will energize for 10 seconds.

• Line voltage: 208 - 600 VAC

• Control voltage: 18 - 30 VAC

• Frequency: 50-60 Hz

• Operating temperature: -40ºF to +140ºF (-40°C to +60°C)

• Probes:

– Ambient temperature: Thermistor, 10K ohm at 77°F (25°C)

– Pressure: ICM380

• Heat pump override: 24 VAC N.C. or N.O.

• Weight: 12 ounces (341 grams)

• Mounting:

– Surface mount using (2) #8 screws

– The ICM334 should be surface mounted to a clean metal

or other thermally conductive surface for maximum heat

dissipation

– It is recommended that the ICM334 be mounted away

from the condenser exhaust air in order to maintain lower

operating temperatures

Specifications

• One Temperature and Two Pressure Inputs

• Integral Heat Pump Bypass Circuitry

– Allows you to electronically bypass the speed

control during heat pump operations

• Solid Start 10 Amp Load Carrying Capability

• Hard Start – Ten second hard start

• 208-600 VAC

• High Temperature Bypass

– Applies full voltage to the motor under normal conditions

Wiring Diagram

T-Stat

Motor

ICM380 ICM380

Summary of content (1 pages)

PAGE 1
ICM334 H EAD P RESSURE C ONTROL with Temperature and Pressure Inputs • One Temperature and Two Pressure Inputs • Integral Heat Pump Bypass Circuitry – Allows you to electronically bypass the speed control during heat pump operations • Solid Start 10 Amp Load Carrying Capability • Hard Start – Ten second hard start • 208-600 VAC • High Temperature Bypass – Applies full voltage to the motor under normal conditions Mode of Operation After properly installing the ICM334, the three phase motor switch will cont