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Page 3 - American Power Conversion Legal Disclaimer; This Publication shall not be for resale in whole or in part.

American Power Conversion Legal Disclaimer The information presented in this manual is not warranted by the American Power Conversion Corporation to be authoritative, error free, or complete. This publication is not meant to be a substitute for a detailed operational and site specific development pl...

Page 5 - Contents

Contents NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting i General Information......................................................... 1 Modules, Systems, and Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Module . . . . . . . . . . . . . . . . . . . . . . ....

Page 11 - General Information; Module

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 1 General Information Modules, Systems, and Groups NetworkAIR Modules and Expansion Modules can be combined electronically to create Systems and Group s . Module A Module is an independent Computer Room Air Conditioner (CRAC) that op...

Page 12 - Group; is a set of two, three or

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 2 Group A Group is a set of two, three or four Systems that work together to provide redundancy and load sharing capabilities. To enable the Modules to work in a System or Group, the only requirement is to connect them together with ...

Page 13 - Safety; Symbols Used in this Manual; Save these instructions; damage to product or other property.; equipment or other property.; Cross-reference symbols used in this manual

3 NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting Safety Symbols Used in this Manual Save these instructions This manual contains important instructions that must be followed when servicing this equipment. Safety symbols that may be used in this manual Electrical Hazard: Indicates...

Page 14 - Safety Hazards; Electrical hazards; This equipment contains moving parts such as fans. Use care around; Tools and parts

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 4 Safety Hazards Lockout/tagout Warning: Make sure to follow the lockout/tagout procedures for your site to remove access to a device and physically label the device as intentionally out of service while servicing this equipment. Ele...

Page 15 - Operation; Display Interface; Item

5 NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting Operation Display Interface Item Function  Major Alarm LED When lit, a major alarm condition exists.  Minor Alarm LED When lit, a minor alarm condition exists.  Check Log LED When lit, at least one new major alarm or minor alarm...

Page 16 - Using the Display Interface; Scrolling status screens; key from the main menu screen.; Status Screen Name

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 6 Using the Display Interface Scrolling status screens The first time you apply power to the Module, the display initializes and runs an LED and alarm-tone test. After start-up, the interface displays the firmware revision number (if...

Page 18 - Start the System; On; Change settings; Numbers or text fields.; Stop the System; Off; Factory default settings

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 8 Start the System Path: Main Menu > On/Off To start the System, select the On/Off option on the main menu and change the setting to On . The System will run according to the current settings under Control Environment . Change set...

Page 19 - Commissioning; Electrical inspection.

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 9 Commissioning After installation, verify that all components are working properly and that the Module is ready to begin operation. Before you commission the Module, make sure that the following inspections are completed: • Initial ...

Page 20 - Power On/Off Procedure; Power on; breaker lever to the left.; Power off; See “Stop the System” on page 8.

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 10 Power On/Off Procedure Power on 1. Turn utility power on. 2. Set each main breaker located behind the left door to the “1” (ON) position by pushing each breaker lever to the left. Note: The main breakers may be in the trip positio...

Page 21 - Commissioning Checklists; Initial Inspection Checklist; R-22 for safe handling of the refrigerant.; Do not run service utilities in front of the fan outlets.

11 NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting Commissioning Checklists Initial Inspection Checklist Warning: Review the safety and data sheet (MSDS-Material Safety Data Sheet) for R-22 for safe handling of the refrigerant. The equipment operates under pressure — 276-2930 kPa ...

Page 22 - Electrical Inspection Checklist; All electrical wiring must comply with national and local codes.; Mechanical and Refrigeration Inspection Checklist

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 12 Electrical Inspection Checklist Electrical Hazard: All electrical wiring must comply with national and local codes. The equipment must be grounded to an earth ground (do not use a water-pipe ground).Three-phase electrical service ...

Page 24 - Start-up Inspection Checklist; While the equipment is operating, ensure that:

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 14 Start-up Inspection Checklist While the equipment is operating, ensure that:  The sight glass moisture sensor is green.  The current draw of all fan motors, heaters, compressors, humidifiers, transformers, and fans for each mode...

Page 26 - System Configuration; DX Precision Air Conditioner.; System options; The; System Options; the methods used to control that hardware.; DX; —Economizer and DX coils; MultiCool; —MultiCool

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 16 System Configuration The System configuration options are defined both at the factory and during the commissioning of the Modules in the System. Caution: Changing the settings incorrectly can cause serious malfunctions and damage ...

Page 27 - • Relative humidity (; RH; If there is no reheat mode, then the cooling setpoint is used.

17 NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting Humid Ctrl. Indicates the humidity control method. The System can control the humidity based on the relative humidity ( RH ) of the return air and the dew point ( DewPt ) of the return air. • Relative humidity ( RH ): The System a...

Page 28 - Fast Startup

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 18 # PCIOMs. Set the number of Programmable Customer Input/Output Modules (PCIOMs) installed in the user interface box. This setting controls the number of input contacts and output relays available in the Input/Output menu. See “Con...

Page 29 - System delays; Comp Min ON; Comp Min OFF

19 NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting System delays Path: Main > Setup > System # > System Config > System Delays The System Delays protect the Modules in the System from excessive wear and damage and keep the modes (cooling, reheat, and dehumidify) from w...

Page 30 - Building management; NetworkAIR FM DX 60 Hz Installation; Sensor setup; Max

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 20 Building management Path: Main > Setup > System # > System Config > Building Management If you are using a building management system with your Module, you must set the following values: Address. The address of the Mai...

Page 31 - Settings for fluid-cooled options; Applicable Settings

21 NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting Settings for fluid-cooled options Modules using the Economizer or MultiCool options have several settings that must be defined. To accommodate the heat of the rejection method, the valve and piping settings must be configured. The...

Page 33 - Econ Isolator Output Relay.

23 NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting Economizer isolation valve (optional) When multiple Modules having three-way valves are connected to a common coolant source, coolant flow through a Module exists even when there is no cooling demand. The Economizer (coolant) isol...

Page 34 - Coil fluid temperature activation threshold and deadband; Coil Fluid Options

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 24 Coil fluid temperature activation threshold and deadband Path: Main > Setup > System # > System Config > Coil Fluid Options The Coil Fluid Options help control the optional MultiCool coil or Economizer coil in equipped...

Page 35 - Contacts and Relays; NetworkAIR FM DX 60 Hz; Input contacts; Alarm Map

25 NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting Contacts and Relays The System can monitor external contact closure events for the following applications: • Magnetic contact switches • Window foil • Tamper switches • Heat detectors • Water sensors • Pressure sensors • Building ...

Page 36 - Map

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 26 Action. Set the System controller to respond to the change of status for an input in one of the following ways: Map Description/Function Status Only Displays the event on the Active Alarms screen. Status-only events are not logged...

Page 37 - Output relays

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 27 Output relays Path: Main >Setup >System # >Input/Output >Output Relays The Main Module supports up to 16 user-defined output relays. Output relays respond to internal alarms and events by changing states to notify outs...

Page 38 - Module Configuration; Configure Module

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 28 Module Configuration The Module configuration settings define which components are available and how the Module should operate. Caution: The settings in the Module Configuration menu are defined at the factory. Changing the settin...

Page 39 - Module Control; Calibrate airflow manually; Coil DP

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 29 Module Control The Module Control options are configured and tuned during the commissioning of each Module. Caution: The settings in the Module Control menu are defined at the factory. Changing the settings incorrectly can cause s...

Page 41 - Control the Environment; How the modes work

31 NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting Control the Environment The System controls the room environment by engaging one of four modes: Cool, Dehumidify, Reheat, or Humidify. These modes may work differently depending on the options and equipment installed in the Module...

Page 42 - MultiCool Dehumidify.

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 32 DX 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)...

Page 43 - Setpoints; Cool

33 NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting Setpoints Path: Main > Control Environment > Setpoints Setpoints are the target values each mode will maintain in the room. The default setpoints are appropriate for most precision cooling applications. The setpoint for each...

Page 44 - Deadbands

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 34 Deadbands Path: Main > Control Environment > Deadbands The deadband is the sensitivity range for a setpoint. It is the value above or below the setpoint at which the mode will output at full capacity. For the DX cool and DX ...

Page 45 - Return air temperature; Cool Deadband Compressor Allocation

35 NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting The following graphic is an example of a two-Module System (with four compressors). The setpoint is 21.1° C (70° F) and the deadband is 2.2° C (4° F). Each compressor engages as the return air temperature reaches its assigned segm...

Page 46 - Dehumidify deadband.; To set the dehumidify deadband for your System:

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 36 Dehumidify deadband. The Dehumidify mode splits the deadband into equal segments according to the number of Modules in the System. A Module is then assigned to each segment of the deadband above the setpoint. When the return air r...

Page 48 - PID controls; Choose which mode or actuator PID loop to tune, using the; How to tune the PIDs; temperature does not respond to this change, adjust the setpoint.

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 38 PID controls Path: Main > Setup > System # > System Config > PID Controls The Proportional plus Integral plus Derivative (PID) loop is used to control the output of the LiquidCool, reheat, and dehumidify modes. Choose ...

Page 49 - Set each constant according to these calculations.; Humidification sensitivity; Proportional

39 NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 6. Note the time, in minutes, between the peaks of the oscillations. This is the Ultimate Period, PU.7. Note the value of the proportional constant. This is the Ultimate Gain, GU.8. Compute the PID constants using the table below....

Page 50 - Alarms; Temperature alarms; Temperature Thresholds.; Set the low- and high-temperature alarms for the air at each of the; Humidity alarms; Humidity Thresholds.; Maintenance intervals; key to scroll

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 40 Alarms Set alarms to alert you to abnormal temperatures or humidity levels and the number of hours the components have been in operation. See “Respond to Alarms” on page 52 for information on how to correct these conditions. Alarm...

Page 51 - Alarm delay

41 NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting Component name. Scroll through the components to view the maintenance intervals: • Blower 1 • Blower 2 • Heater • Humidifier • Variable Frequency Drive 1 (VFD 1) • Variable Frequency Drive 2 (VFD 2) • Compressor 1 • Compressor 2 A...

Page 52 - Group configuration

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 42 Group Up to four Systems can be connected to form a redundant Group. Joining Systems together to form a Group provides the following: • Redundancy • A way for other Systems in the Group to assist with the room load • Demand fighti...

Page 53 - Group settings; Load Share Thrshlds.

43 NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting Comm Loss Failover. Decide if the Group considers a System in the Comm Lost state to be in a failed state. • Off —The Group will assume that the System is still operating normally. • On— A backup System will be moved to the online...

Page 54 - System Role Assignment.; System failure events

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 44 System Role Assignment. The System Role Assignment settings depend on the Run-time Balance ( Run-time Bal ) setting. • If Run-time Bal is set to On , each System is rotated between a primary and backup role in order to spread the ...

Page 55 - Display; Password and time-out; Invalidate Password.; Date and time; Temperature and pressure units

45 NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting Display Set display settings including the time and date, temperature units, passwords, and time-out settings. You can also reset settings to their default values and download new firmware. Password and time-out Path: Main > Se...

Page 56 - Adjust display; Set the LCD contrast.; How to update the firmware; YES

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 46 Adjust display Path: Main > Setup > System > Display > Display Adjust Set the LCD contrast. Adjust the visibility of the screen text. Lower numbered settings provide darker text; higher numbers provide lighter text. Se...

Page 57 - Reset to defaults; Reset User Parameters.; Product data; Product Data

47 NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting Reset to defaults Path: Main > Setup > System # > Display > Reset to Defaults Reset User Parameters. Return settings that can be modified with the user password to their factory default settings. Reset Srvc Parameters....

Page 58 - Network Configuration; Network configuration; Manual; You must select; Accept Changes; to save any modifications to the IP address, subnet

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 48 Network Configuration Configure the network settings for the Network Management Card from the display interface. The management card allows remote control and configuration of the System. Network configuration Path: Main > Setu...

Page 59 - View Status Readings; Main Module; Clear Total

49 NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting View Status Readings The display interface has several options for viewing the status of the System, its Modules, and the environment being controlled. The status readings for Modules are available under the Main Module and Expans...

Page 60 - View the run hours for each System in the Group.; Reset Local System Run Hours.; Reset the run hours of the local System. To reset the run hours for

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 50 System status Path: Main > Status > System # The System status screens include information about the entire System. Temp & Humidity. View the average temperature and humidity readings at the sensors in this System (same ...

Page 61 - View Event Log; View log; New Events

51 NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting View Event Log The event log saves status information and a message each time a change in the System is detected. Alarms and events are recorded in the log. However, status events (informational) are only displayed on the active a...

Page 62 - Respond to Alarms; Major or minor alarm LEDs; Clear active alarms

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 52 Respond to Alarms When an alarm is triggered, the Main Module alerts you through the display by the following methods: • Alarm beeper • Major or minor alarm LED • Active alarm screen • Alarm and event logs Major or minor alarm LED...

Page 63 - Alarm messages and suggested actions; Displayed Alarm Message

53 NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting Alarm messages and suggested actions Displayed Alarm Message Action Required Air Block Interlock Open • Verify that the air block panels are in place.• Confirm that the wiring connections for the air block interlock switches are s...

Page 65 - the low threshold for the fluid coil coolant temperature

55 NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting Env Temperature Low • Verify that no supply air is fed directly back into the return air.• Ensure that the alarm delay is not set too low. The delay should be long enough to allow the room temperature to stabilize after start-up. ...

Page 71 - Network Management Card; Quick Configuration; Overview; NetworkAIR FM User’s; TCP/IP configuration methods

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 61 Network Management Card Quick Configuration The NetworkAIR FM DX is shipped with a Network Management Card that enables you to manage the air conditioner over your network. You must set up the Network Management Card to control th...

Page 73 - User’s Guide

63 NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 2. When the Network Management Card reboots, the BOOTP server provides it with the TCP/IP settings. – If you specified a bootup file name, the Network Management Card attempts to transfer that file from the BOOTP server using TFTP...

Page 74 - Remote access to the control console; apc

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 64 Remote access to the control console From any computer on the same subnet as the Network Management Card, you can use ARP and Ping to assign an IP address to a Network Management Card, and then use Telnet to access the control con...

Page 75 - Control console

65 NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting Control console After you log on at the control console, as described in “Remote access to the control console” on page 64: 1. Choose Network from the Control Console menu. 2. Choose TCP/IP from the Network menu. 3. If you are not...

Page 76 - Access a Configured Unit; Web interface; Security Handbook; Telnet for basic access.

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 66 Access a Configured Unit Overview After the NetworkAIR FM DX is running on your network, you can use the interfaces summarized here to access the NetworkAIR FM DX. See the User’s Guide for more information on the interfaces. Web i...

Page 77 - SNMP

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 67 SSH for high-security access. If you use the high security of SSL for the Web interface, use Secure SHell (SSH) for access to the control console. SSH encrypts user names, passwords, and transmitted data. The interface, user accou...

Page 78 - Recover From a Lost Password

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 68 Recover From a Lost Password To access the control console, you can use a local computer (a computer that connects to the Network Management Card or other device through the serial port). 1. Select a serial port at the local compu...

Page 79 - Maintenance; Monthly Preventive Maintenance; Environment; In what type of room is the Module located?; Cleanliness; Check the condition of the return air filters. Change if necessary.

69 NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting Maintenance Monthly Preventive Maintenance The following pages can be photocopied and used during the maintenance procedures. After they have been filled out, save for future reference. Prepared by: _______________________________...

Page 80 - Mechanical; moving freely with no signs of binding or damage.; Electrical

70 NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting Mechanical  Check the evaporator fans and motors. All components should be moving freely with no signs of binding or damage.  Check the condenser fluid cooler motors, fan blades, and fan guards. All components should be moving f...

Page 81 - Quarterly Preventive Maintenance; * Perform all the Monthly Preventive Maintenance items; and; Check the refrigeration lines for leaks.; Record the amperages for the following components.; Component

71 NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting Quarterly Preventive Maintenance * Perform all the Monthly Preventive Maintenance items and the items below. Prepared by: _________________________________ Model Number: ______________________________ Serial Number: ______________...

Page 82 - Functional tests

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

Page 83 - Semi-Annual Preventive Maintenance

73 NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting Semi-Annual Preventive Maintenance * Perform all the Monthly/Quarterly Preventive Maintenance items and the items below. Prepared by: _________________________________ Model Number: ______________________________ Serial Number: __...

Page 84 - Measure the refrigerant pressures.; Head Pressure

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 74 Functional tests  Measure the refrigerant pressures.  Check the operation of the thermal expansion valve. Verify superheat and sub-cooling of the System in full cool mode: • Superheat ________________ • Sub-cooling _____________...

Page 85 - Troubleshooting; Problem

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 75 Troubleshooting Problem Possible Cause Corrective Action Airflow too low • Blower setting too low• Dirty or blocked air filters• External static pressure too high • Raised floor height too low • Return airflow restriction • Supply...

Page 91 - Warranty; One-Year Factory Warranty; The limited warranty provided by American Power Conversion (APC; Terms of warranty

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 81 Warranty One-Year Factory Warranty The limited warranty provided by American Power Conversion (APC ® ) in this Statement of Limited Factory Warranty applies only to products you purchase for your commercial or industrial use in th...

Page 92 - Warranty claims; . Select your country from the country

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 82 IN NO EVENT SHALL APC, ITS OFFICERS, DIRECTORS, AFFILIATES OR EMPLOYEES BE LIABLE FOR ANY FORM OF INDIRECT, SPECIAL, CONSEQUENTIAL OR PUNITIVE DAMAGES, ARISING OUT OF THE USE, SERVICE OR INSTALLATION, OF THE PRODUCTS, WHETHER SUCH...

Page 93 - Warranty Procedures; Claims

83 NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting Warranty Procedures Claims To obtain service under the warranty, contact APC Customer Support (see the back cover of this manual for contact information). You will need the model number of the Product, the serial number, and the d...

Page 96 - APC Worldwide Customer Support

10/2007 990-3127 *990-3127* APC Worldwide Customer Support Customer support for this or any other APC product is available at no charge in any of the following ways: • Visit the APC Web site to access documents in the APC Knowledge Base and to submit customer support requests. – www.apc.com (Corpora...