Data Aire dap4 User Manual page 90

Dehumidification Operation (continued)
Dehumidification DX Unit: Operation is based on the mode selected in the
factory menu.
None – No dehumidification mode (default setting)
1C In Limit – One compressor may run as long as temperature does not
drop 2°F below the set point minus the dead band. Dehumidification will
resume when the temperature rises back to the set point.
1C No Limit – One compressor may run regardless of a drop in
temperature.
2C In Limit – (Not shown on IRDX models). Two compressors may run as
long as temperature does not drop 2°F below the set point minus the dead
band. Dehumidification will resume when the temperature rises back to the
set point.
2C No Limit – (Not shown on IRDX models). Two compressors may run
regardless of a drop in temperature.
Operation: The compressors are staged on for temperature or humidity control,
whichever has the greater demand. Dehumidification can be set to control:
Relative Humidity or Dew point. Please refer to the following section that covers
your factory setting and the type of compressor installed.
On/Off Compressors Controlling Relative Humidity:
When humidity is increasing:
Stage 1 ON at Setpoint + Deadband
Stage 2 ON at Setpoint + Deadband + 1%
Stage 3 ON at Setpoint + Deadband + 2%
Stage 4 ON at Setpoint + Deadband + 3%
When humidity is decreasing:
Stage 4 OFF at Setpoint + 3%
Stage 3 OFF at Setpoint + 2%
Stage 2 OFF at Setpoint + 1%
Stage 1 OFF at Setpoint
90