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A6 ENTHALPY CONTROLLER
A
B
C
D
Open
Min
Pos
FREE COOLING SETPOINT;
A=Completely counterclockwise
D=Completely clockwise
OUTDOOR AIR
SUITABLE LED
Free
Cool
DCV
EXH
EXH
Set
2V 10V
DCV
Max
2V 10V
DCV
Set
2V 10V
IAQ SETPOINT
IAQ READING IS
ABOVE SETPOINT
MUM POSITION
IAQ MAXIMUM
POSITION
(set higher than
minimum position)
FIGURE 22
A6 Enthalpy Control LEDs
Outdoor air is considered suitable when temperature and
completely clockwise to position “D”.
TABLE 16
ENTHALPY FREE COOLING SETPOINTS
Control Setting
A
B
C
D
*Setting A is recommended
Damper Minimum Position
NOTE - A jumper is factory-installed between TB1 R and
OC terminals to maintain occupied status (allowing min-
imum fresh air). When using an electronic thermostat or
energy management system with an occupied/unoccu-
pied feature, remove jumper.
available. Make sure jumper is in place between
NOTE - Damper minimum position can be set lower
than traditional minimum air requirements when
an IAQ sensor is specied. Dampers will open to
DCV MAX setting (if CO2 is above setpoint) to meet
traditional ventilation requirements.
Measure outdoor air temperature. Mark the point on
Measure return air temperature. Mark that point on
Draw a straight line between points A and B.
Draw a vertical line through point C.
Draw a horizontal line where the two lines meet.
.
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