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NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting34
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 dehumidification modes, the compressor
stages are engaged one at a time as the temperature or humidity exceeds equal portions of the deadband
(above the setpoint).
Acceptable deadband ranges:
• Cool: 0.28 –5.6°C (0.5–10.0°F)
• Reheat: 0.28–5.6°C ( 0.5–10.0°F)
• Dehumidify 1–10% Relative Humidity
Cool deadband. The Cool mode splits the deadband into equal segments according to the number of
compressors in the System. A compressor is then assigned to each segment of the deadband above the
setpoint. When the return temperature exceeds the temperature associated with that segment, the
compressor engages and runs until the temperature drops below that segment.
To set the cool deadband for your System:
1. Determine the number of Modules in your System (1 – 3).
2. Multiply the number of Modules in your System by two.
3. Use this number as your cool deadband setting. This assigns each compressor a 1°F segment of
the deadband above the setpoint.
4. Adjust the deadband setting higher or lower to increase or decrease the speed at which the
System can respond to rising temperatures.
Cool: 02.0°F
Reheat: 02.0°F
Dehumid: 05.0%RH
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