ICM Controls ICM325HN Installation, Operation & Application Manual

Also see for ICM325HN: User manual

Contents

ICM Controls ICM325HN Installation, Operation & Application Manual Manual pdf 1 page image

• Line voltage: 120, 208, 240, and 480 VAC• Control voltage: 18-30 VAC• Frequency: 50-60 Hz• Operating temperature: -40ºF to +176ºF (-40°C to +75°C)• Sensors: 10K ohms at 77°F (25°C)• Heat pump override: 24 VAC N.C. or N.O.Note: A maximum of three sensors can be connected to the control.• Weight: 12 ounces (341 grams)Note: The ICM325HN should be applied to motors and equipment that have been designated by theirrespective manufacturers as capable of being speed controlled.• Mounting:– Surface mount using (4) #8 screws– The ICM325HN should be surface mounted to a clean metal or other thermally conductive surface formaximum heat dissipation– It is recommended that the ICM325HN be mounted away from the condenser exhaust air in order to maintainlower operating temperaturesSpecificationsInstallation of the ICM325HN shall be performed by trained technicians only. Adhere to all local and nationalelectric codes.Disconnect all power to the system before making any connections.Caution!ICM325HNInstallation, Operation & Application GuideFor more information on our complete range of American-madeproducts – plus wiring diagrams, troubleshooting tips and more,visit us at www.icmcontrols.comHead PressureControl withOptionalHeat Pump OverrideTemperature sensitivecontrol regulateshead pressure1. Remove power from system.2. Field install a wire from Line 1 wire to Line 1 terminal.3. Cut Line 2 wire; affix motor side to Motor 2 terminal and lineside to Line 2 terminal.4. Make 24 VAC, probe and HP connections.5. Verify wiring is correct.6. Power up system and check operation.Connections for ICM325HN at 480 VACPSCFanMotorRunCapacitor480 VACTypical condenser fanLine1480 VACLine2Motor2PSCFanMotorRunCapacitor480 VACFieldInstalledWireTypical condenserfan with ICM325HNinstalledConnections for ICM325HN at 120/208/240 VAC1. Remove power from system.2. Field install a wire from Line 1 wire to Line 1 terminal.3. Cut Line 2 wire; affix motor side to Motor 2 terminal and lineside to Line 2 terminal.4. Make 24 VAC, probe and HP connections.5. Verify wiring is correct.6. Power up system and check operation. PSCFanMotorRunCapacitorLine1120/240VACLine2Motor2PSCFanMotorRunCapacitorFieldInstalledWireTypical condenserfan with ICM325HNinstalled120/208/240VACTypical condenser fan120/208/240VACConnecting the ProbeExample1. Install the temperature probe several bends into the condenser. It can be attached to theU-bend or placed between the fins in the upper 1/3 of the condenser (see other side formore information).Note:The response of the system can be fine tuned by repositioning the probe. Placethe probe on the condenser where it is 100°F when pressures are correct forbest response.2. Connect the two wires from the sensor to the terminalblock where it is marked PROBE S1. If additional probes are necessary for multiplerefrigerant circuits, they may be attached to terminals marked PROBE S2 and PROBE S3.Note:The control will respond to the probe that senses the highest temperature.Connections for Air Conditioning Only1. For non-heat pump applications, the heatpump select jumper must be in the Default(N.O.) position, and the HP terminals mustbe left unconnected.2. Set the Cutout Speed and the Hard StartTime to the appropriate positions for the typeof motor you have (see other side).Temperature Probe24 VACAdditionalProbesProbe S1HPHeat PumpSelect JumperDefault PositionICM325HN Typical Installation

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