JOHNSON CONTROLS
12
FORM 145.05-SU2 (1207)
This feature enables the unit to lower the supply air
temperature to prevent the supply air dew point from
dropping below the under floor temperature.
Field Wiring
A 10K Type II thermistor must be located in the under
floor space and connected to IN-6 terminals 11 and 12
of the main control board.
Programming
The following items must be programmed through the
“
Setpoints
” section of the User Interface:
•
“AC-S/A Dew En”
must be set to ON
FLEXSYS DEW POINT TEMPERATURE CONTROL
•
“AC-S/A Dew Min”
set point must be pro-
grammed. The default value is 48.0˚ F. This is
the lowest supply air temperature the control can
use for dew point control.
•
“AC-S/A Dew Max”
set point must be pro-
grammed. The default value is 60.0˚ F. This is
the highest supply air temperature the control can
use for dew point control.
•
“AC-S/A Dew Dif”
set point must be pro-
grammed. The default value is 5.0˚ F. This value
is subtracted from the under floor temperature
and is used to establish a under floor dew point
supply air temperature set point.
