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Grp Smoke Alrm. Share smoke alarms among the Systems in this Group. If the Group Smoke Alarm setting is On, all Systems in the Group will shut down if a smoke alarm occurs in one System. 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 state. Caution: If Runtime Balancing is enabled, Comm Loss Failover must be On. Otherwise inadvertent System shutdowns may occur. Name. Set the name of this Group. The Group name also appears in the interfaces. Group settings Path: Main > Setup > Group > Group Settings The Group Settings define the load-sharing and System role-assignment functions of the Group. Load Share. Enable or disable load-sharing requests for each mode. If load-sharing is disabled, Systems cannot send requests for assistance to the Group. Load Share Thrshlds. Set the load-sharing thresholds for each mode. If the environmental temperature or humidity is outside the range determined by the setpoint and threshold, the System will generate a load-sharing request. Acceptable ranges for each mode are listed in the table below. Mode Range Share if Cool 0.0–11.1°C (0.0–20.0°F) Temperature > SetpointCool + ThresholdCool Reheat 0.0–11.1°C (0.0–20.0°F) Temperature < SetpointReheat – ThresholdReheat Dehumidify 0.0–20.0% RH Humidity > SetpointDehumidify + ThresholdDehumidify Humidify 0.0–20.0% RH Humidity < SetpointHumidify – ThresholdHumidify NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 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 run hours among all of the Systems in the Group. Rotation occurs when a primary system exceeds the runtime of a backup system by more than 72 hours. # Primary: Set the number of Systems to be designated as primary. The remaining Systems in the Group will assume the backup role. • If Run-time Bal is set to Off, you must designate the role of each System in the Group. The System will retain this role until you change the setting. Sys# Role: Set the role for each System. Back-up Systems only operate in the event of a failure or load-sharing request (if enabled). Caution: If Runtime Balancing is enabled, Comm Loss Failover must be On. Otherwise inadvertent System shutdowns may occur. System failure events Path: Main > Setup > Group > Group Settings Note: The System Failure Events must be configured at each System in the Group. Unlike other Group settings, the System Failure Events list is not copied to each System in the Group. Configure the list of System Failure Events. If a System failure event occurs, the System in which it occurs transitions to the failed state, and a backup System is engaged if available. Event. Scroll through the list of possible failure events. The first line indicates whether the event is System-level or Module-level and the second line indicates the event text. State. Set each event to Enabled or Disabled. If an enabled event occurs in a System, that System transitions to the failed state and stops running unless there is no backup System available. 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 > Setup > System > Display > Password & Time-out Note: The default user password is APC (upper-case). See “Password entry” on page 7 for more information on how to enter the password. Change passwords. Set the passwords necessary to change System settings. 1. Move the selector arrow next to the Change Password option and press the ENTER key. 2. Select the password to change (either Service or User). 3. Enter your current password; once this is entered, you will return to the Change Password screen. 4. Enter a new password (up to 8 characters). 5. Press the ENTER key to confirm. Note: If you do not want settings to be protected by a password, enter a blank space character for the password. Password and menu time-out. Set the time-out period during which settings can be changed after the password is entered. After the period has elapsed without a keypress, password entry will be required and the display interface will return to the scrolling status screens. Invalidate Password. Override the password time-out delay and make password entry required again with the Invalidate NOW option. Date and time Path: Main > Setup > System > Display > Date/Time Set the date. Enter the day, month, and year then press the ENTER key. The date is displayed on some status screens and is also used in the alarm/event...

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