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American Power Conversion DX, FM manual Functional tests, Verify the following modes of operation

Models: DX FM

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Functional tests

Verify the following modes of operation:

•Full cooling

•Full reheat

•Humidification

•Dehumidification

•MultiCool

•Economizer

Verify the operation of these actuators:

•MultiCool or Economizer

•Head pressure control valve (water/glycol modules)

72	NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting

Image 82

American Power Conversion DX, FM manual Functional tests, Verify the following modes of operation, MultiCool or Economizer

Contents

Operation, Maintenance, and Troubleshooting 60 HzNetworkAIR FM DX Precision Air Conditioner Page American Power Conversion Legal Disclaimer Page Operation SafetyGeneral Information ContentsMechanical and Refrigeration Inspection Checklist Temperature alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Humidity alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Maintenance intervals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Alarm delay Maintenance Network Management CardTroubleshooting WarrantyPage Module General InformationModules, Systems, and Groups SystemGroup Safety symbols that may be used in this manual SafetySymbols Used in this Manual Cross-referencesymbols used in this manualElectrical hazards Safety HazardsLockout/tagout Static dischargeDisplay Interface OperationFunction Status Screen Name Using the Display InterfaceScrolling status screens Status Information DisplayedMain menu screen Password entryNavigating the interface Start the System Change settingsFactory default settings Stop the SystemCommissioning Power on Power On/Off ProcedurePower off Commissioning Checklists Initial Inspection ChecklistEnsure that Electrical Inspection ChecklistMechanical and Refrigeration Inspection Checklist Ensure thatEnsure that Mechanical Inspection Air-cooledChecklistUser Interface Box Inspection Checklist Ensure thatStart-upInspection Checklist While the equipment is operating, ensure thatEnsure that Final Inspection ChecklistOwner Acceptance System Configuration System optionsPage Up Down System delays Sensor setup Building managementApplicable Settings Settings for fluid-cooledoptionsFluid-CoilType Actuator types Flow Switch Multi Cndsr Vlv 3-wayValve types Coil Fluid 3-wayEconomizer isolation valve optional Econ Isolator Valve EnableEcon Isolator Close Dly Econ Isolator Open Dly Page Contacts and Relays Input contactsDescription/Function Output relays Configure Module Module ConfigurationAlarm detectors Calibrate airflow manually Module ControlCalibrate airflow automatically Reset humidifier Reset Variable Frequency DriveSet up humidifier Control the Environment How the modes workDX Dehumidify. Similar to DX cooling, the output for dehumidification is determined by the difference between the setpoint and the average return humidity from each of the Modules in the System if more than one Module is present. The deadband is used to engage both compressors incrementally with increasing demand. Each Module in the System is assigned an equal division of the deadband a percentage of relative humidity. Both compressors in a Module are engaged when the assigned division of the deadband above the setpoint is reached. If the average return humidity reaches the setpoint plus the entire deadband, all of the compressors will be engaged until the humidity drops below the setpoint plus the deadband. Unlike DX cooling, the compressors in each Module are normally set to work as a single unit instead of separately. The use of one or two compressors per Module is based on the Dehum. Capacity setting Path Main Menu Setup System # System Config System Options Setpoints Deadbands Cool Deadband Compressor Allocation Two-ModuleSystemTo set the dehumidify deadband for your System Modes Essential functionsHow to tune the PIDs PID controlsProportional PID Tuning CorrectionControl IntegralHumidity alarms AlarmsTemperature alarms Maintenance intervalsAlarm delay Group Group configurationRange Group settingsMode Share ifSystem failure events Temperature and pressure units DisplayPassword and time-out Date and timeAdjust display How to update the firmwareReset to defaults Product dataNetwork Configuration Network configurationScrolling status screens View Status ReadingsModule status Path Main Status System # System statusGroup status Path: Main > Status > GroupView Event Log View logView active alarms Respond to AlarmsMajor or minor alarm LEDs Clear active alarmsDisplayed Alarm Message Alarm messages and suggested actionsAction Required Action Required Displayed Alarm MessageCondensate Pump Fail Env Temperature Low Displayed Alarm MessageAction Required Action Required Displayed Alarm MessageSystem Options Action Required Displayed Alarm MessageHumidifier Action Required Displayed Alarm MessageSystem Config System Options Comm Lost state, or OffAction Required Displayed Alarm MessageSupply Humidity High Action Required Displayed Alarm MessageSystem Comm Lost TCP/IP configuration methods Quick ConfigurationNetwork Management Card OverviewBOOTP and DHCP configuration APC Device IP Configuration WizardPath Setup System Network Config A Vendor Class Identifier APC by default Remote access to the control console Control console 1.Choose Network from the Control Console menuWeb interface Access a Configured UnitOverview Telnet/SSHSNMP FTP/SCPRecover From a Lost Password Cleanliness MaintenanceMonthly Preventive Maintenance EnvironmentMechanical ElectricalMechanical Quarterly Preventive MaintenanceElectrical Full cooling Full reheat Humidification Functional testsVerify the following modes of operation Dehumidification MultiCool EconomizerMechanical Semi-AnnualPreventive MaintenanceCleanliness ElectricalFunctional tests Measure the refrigerant pressuresPossible Cause TroubleshootingProblem Corrective ActionCorrective Action ProblemPossible Cause Compressor fails toCorrective Action ProblemPossible Cause Compressor noisyCorrective Action ProblemPossible Cause Head pressure tooCorrective Action ProblemPossible Cause Suction pressure tooPage Terms of warranty WarrantyOne-YearFactory Warranty Non-transferablewarrantyWarranty claims Claims Warranty ProceduresParts Page Page 990-3127 990-3127APC Worldwide Customer Support 10/2007