Install Manual

11.0 Dallas™ Microprocessor
The Dallas™ microprocessor combines simplicity with advanced controls to give the end user a
range of options that can meet most install situations. With the LED indicator board, unit status
can be easily checked by a technician and homeowner alike.
11.1 System Safeties
The Dallas board has multiple built-in safety inputs that allows multiple levels of protection on
the Geocool unit.
11.1.1 Dip-Switch Settings
The Dallas board has a set of 4 dip-switches that allow a range of features included in the board
to be accessed. These should only be field adjusted by a trained factory technician. The
first 2 switches are factory set, depending on what tonnage the unit is. These match pre-set
blower CFM’s with the appropriate compressor size. The 3rd switch allows the installer to select
a slower CFM range in the cooling mode that will slow the fan down providing more
dehumidification. The 4th switch is for future use and will allow the board to incorporate a
variable speed flow center or a modulating electronic water valve.
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