American Power Conversion Central Air Conditioning System manual Maint intervals, Alarm delay

Operation: Set Up Alarms

Maint intervals

Path: Main > Setup > System # > Alarms > Maint Intervals

The System records the number of hours each of the eight components in each Module has operated. Set the maintenance interval for each type of component in the Modules of your System. Every time the run hours for a component in a Module elapse this number of hours, an alarm will occur. Move the selector arrow next to the component name (top line of the screen), and press the ENTER key to scroll through each of the eight components.

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

Alarm. Set the number of operating hours (in 100-hour increments) at which an alarm will occur to remind you of maintenance milestones.

Alarm delay

Path: Main > Setup > System # > Alarms > Alarm Delays

The alarm delay is the period between start-up and the enabling of alarms. The delay allows the modes (Cool, Reheat, Dehumidify, and Humidify) to take effect before alarms occur.

Temperature Delay. Set the temperature alarm delay. The maximum delay is 999 seconds (16 minutes, 39 seconds).

Humidity Delay. Set the humidity alarm delay. The maximum delay is 999 seconds (16 minutes, 39 seconds).

Coil fluid thresholds

Path: Main > Setup > System # > Alarms > Coil Fluid Thrshlds

The coil fluid coolant temperature thresholds set a range for temperatures at the coolant inlet (Water or Glycol) of the fluid coil (if equipped). An alarm occurs if the coolant temperatures move outside of this range.

Low Threshold. Set the coolant temperature at which you want a low temperature alarm to occur.

High Threshold. Set the coolant temperature at which you want a high temperature alarm to occur.

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