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Distech Controls LC-3 User Manual
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Distech Controls LC-3 User Manual

Psychrometric controls
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PC-3

User Guide

© 2018 AbsolutAire, Inc.
112018

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Summary of Contents for Distech Controls LC-3

  • Page 1: User Guide

    PC-3 User Guide © 2018 AbsolutAire, Inc. 112018...

  • Page 2: Table Of Contents

    Table of Contents Page Title Preface Introduction Operation Menu Tree Network Integration Images Figure 1 – Main Screen...

  • Page 3: Preface

    Preface The LC-3 Psychrometric Controls Package is a cost-effective system that will control discharge conditions for installations that need discharge control of temperature, de-humidification and/or humidification. All calculations are performed internally so the user only needs to input their desired discharge conditions.

  • Page 4: Introduction

    Introduction The Smart-Vue User Interface (UI) for the LC-3 Control System displays the information necessary to operate and diagnose the Discharge Temperature and Humidity Control Unit. Figure 1 At the top left corner of the display there is a bell symbol. This is the system alarm indicator.

  • Page 5: Operation

    Operation The system has a scrolling display which displays the current Discharge Temperature, as well as Relative Humidity and Airflow CFM (if equipped with airflow monitoring and control). The menu is separated into sub-menus for ease of use, and only the options the unit is equipped with will be displayed.

  • Page 6: Menu Tree

    Menu Tree Scrolling Display Discharge_Temp – Current discharge temperature at the unit discharge (if more than one discharge sensor is used this will be an averaged value of the sensors). Discharge_Humidity – Current discharge humidity at the unit discharge (if more than one discharge sensor is used this will be an averaged value of the sensors).
  • Page 7 OA_Humidity – Current outside air humidity. Coil_Temp – Current cooling coil exit temperature. Preheat_Temp – Current preheat exit temperature. DA_Temp – Current discharge air temperature (if more than one discharge sensor is used this will be an averaged value). DA_Humidity – Current discharge humidity (if more than one discharge sensor is used this will be an averaged value).
  • Page 8 Pre_Heat_Sensor – Preheat temperature sensor alarm status. Enumerated “no-fault/open/short”. Check sensor wiring. DA_Temp_Sensor_1 – Discharge sensor #1 alarm status. Enumerated “no-fault/open/short”. Check sensor wiring. DA_Temp_Sensor_2 – Discharge sensor #2 alarm status. Enumerated “no-fault/open/short”. Check sensor wiring. DA_Hum_Sensor_1 – Discharge humidity sensor #1 alarm status. Enumerated “no-fault/open/short”.
  • Page 9 Advanced Menu (Press and hold “menu” button for 5 seconds to enter) Date Time Year – Set the real time clock year. Date – Set the real time clock date. Time – Set the real time clock time. Advanced Config – (Password Protected, Factory Only)

  • Page 10: Network Integration

    Network Integration The controller in this unit can easily be integrated into a BACnet MS/TP Building Management System. The controller will automatically detect the baud rate of the network it is connected to after a power cycle, and will automatically begin communications. The MAC Address is set via the dip switches on the front of the controller.
  • Page 11 object- object- object-name type instance description commandable Outside Temperature Inlet Temperature Sensor Outside Humidity Inlet Humidity Sensor Cooling Coil Temperature Coil Exit Temperature Preheat Exit Pre-Heat Exit Temperature Temperature Sensor Discharge Temperature Discharge Temperature 1 Sensor 1 Discharge Humidity Discharge Humidity 1 Sensor 1 Discharge Temperature Discharge Temperature 2...
  • Page 12 Discharge Temp Sensor Alarm [MSV DischargeSensorAlarm Enumerated] Outside Temp Sensor Alarm [MSV OutsideTempSensorAlarm Enumerated] Outside Humidity Sensor Alarm [MSV OutsideHumiditySensorAlarm Enumerated] Burner Lockout Alarm PreheatBurnerLockoutAlarm [MSV Enumerated] Motor Not Responding Alarm [MSV Enumerated] (unit was commanded on for 2 minutes and fan motor MotorNotRespondingAlarm did not start) Reheat Burner ON...
  • Page 13 Number of Discharge Temp/Humidity Sensors DischargeSensorCount Available Airflow (DFM) Monitoring and Control AirflowAvailable Available Discharge Temperature DischargeeTempSetPoint Set Point Discharge Humidity Set DischargeHumiditySetPoint Point Discharge Airflow (DM) DischargeAirflowSetPoint Set Point Preheat Burner Reset PreHeatBurnerReset Command Reheat Burner Reset ReheatBurnerReset Command OutsideTemperature Outside Temperature OutsideHumidity...
  • Page 14 Discharge Humidity Sensor Alarm [MSV DischargeHumiditySensorAlarm_1 Enumerated] Discharge Humidity Sensor Alarm [MSV DischargeHumiditySensorAlarm_2 Enumerated] Reheat Burner Lockout Alarm [MSV Enumerated] (unit was commanded on for 2 minutes and fan motor ReheatBurnerLockoutAlarm did not start) Dirty Filter Alarm [MSV DirtyFinalFitlerAlarm Enumerated] Return Temp Sensor Alarm [MSV OutsideHumiditySensorAlarm 1...
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