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CO2 PPM setting - Press CO2 PPM, The current PPM setting
will be displayed. To change settings press the Up or Down
buttons. Press Enter to accept new setting.
CO2 dead band - Press button to display current setting.
Press the up or down button to change setting. Press Enter to
accept new setting
Temp & humid lock - use this function to interlock (COnnEct)
or split (SPLit) humidity and temperature. Press Temp &
humid lock button to display the setting. Press the Up and
Down buttons to change the setting. Press Enter to accept
new setting.
1) Select connect (COnnEct) if using ventilating fans only for
cooling and removing humidity. The fan will turn on when the
sensor detects a rise above the setting in either the humidity
or temperature.
2) Select split (SPLit) if using a ventilating fan or AC unit as a
cooling device and a dehumidifier to remove humidity. Each
device is controlled independently. The cooling device will turn
on when the temperature rises above the setting and the
dehumidifier will turn on when the humidity rises above the
setting.
3) Select split (SPLit) if using a fan or AC unit as a cooling
device and a humidifier to add humidity. Each device is
controlled independently. The cooling device will turn on when
the temperature rises above the setting and the humidifier will
turn on when the humidity lowers below the setting.
Temp & CO2 lock - Use this function to interlock (COnnEct)
or split (SPLit) the CO2 and temperature functions. They can
activate at the same time or independently. Press the Temp &
CO2 lock to display the setting. Press the Up or Down buttons
to change the setting. Press Enter to accept new setting.
Page 11 DDAC-1
1) Select connect mode (COnnEct) if using ventilating fans
(inside-to-outside growing area air exchange) for cooling and a
compressed CO2 setup. This will turn off the CO2 when the
fans are activated. The fans will exchange the warm-humid
inside air with the cooler-drier outside air while the CO2 is off
to prevent excess loss of CO2.
2) Select split mode (SPLit) if using a recycling air-conditioner
for cooling and compressed CO2 in the growing area where
there is no exchange of outside air. This will activate the air
conditioner independently from the CO2 allowing them to both
run at the same time.
3) Select split mode (SPLit) if using ventilating fans (inside-to-
outside growing area air exchange) for cooling and a CO2
generator. If set-up this way, the ventilation fans AND the CO2
generator will be allowed to operate simultaneously.
4) Select connect mode (COnnEct) if using a recycling air-
conditioner for cooling and a CO2 generator. This turn off the
CO2 generator when the air conditioner is operating to reduce
the amount of heat that needs to be removed by the air
conditioner.
Min/Max Recall - Press to “recall” or display the minimum and
maximum temperature, humidity, and CO2 recorded values.
Each time the button is pressed, the next setting will be
displayed.
The order of the recorded values is as follows:
Max temp, Min temp, Max humid, Min humid,
Max CO2, Min CO2
To reset the Min / Max values - Press the Enter / Reset
button and hold for 3 seconds.
