© 2013 Agrowtek Inc.
www.agrowtek.com
| 83 Ambrogio Dr Suite H Gurnee, IL 60031 | [email protected]
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CO
2
Injection
CO
2
augmentation is controlled via a day-time ppm concentration set-point and the readings from the CO
2
sensor. Carbon
dioxide is not injected during the night time.
Day ppm: Enter the target CO
2
concentration for the day time.
Dead-band: CO2 ppm drop below ppm set-point before re-
activating CO
2
.
Example: Set point = 1000ppm, dead-band = 100ppm; Controller
activates CO
2
output at or below 900 and turns off at 1000.
Output#: Enter the output number that the CO
2
device being
controlled is connected to.
See “Interrupts” under “Output Controls” for disabling CO
2
output when ventilation output(s) turn on. Also see temperature
and humidity limit functions to cancel CO2 in anticipation of ventilation or to prevent combustion generators from operating
above a set limit temperature or humidity.
Touch Panel
The CO
2
controls are accessed from the “Controls” menu by touching the “CO2” button. Select between injection and
ventilation controls.
CO
2
Boost Timer
CO
2
Boost Timer allows the standard ppm set-point to be over-ridden by a “boost” (or starvation) set-point for a period of
time. Simply set the time band in which the over-ride should take place and the desired ppm set-point during that period.
Boost ppm: Enter the target CO
2
concentration during the boost timer duration. Note: the boost value may also be lower than
the standard set-point. When the boost timer period has ended, the CO2 set point will return to the standard set point.
CO2 Injection Control
Turn ON Output
If output # is not 0
Dead Band
ppm
Output #
CO2 Set Point
ppm
Day Mode
CO2 Reading
If sensor reading is low
Press “CO2” button to access the CO
2
controls.
Select injection settings.
Enter day ppm target, dead-band and
CO
2
output number. Press “boost
timer” button to modify boost settings.
Set Point
Output On
Off
Dead
Band
CO2 Injection
