Instruction manual
GROW
BASE EC
PRO
19
the CO
₂
flow on the CO
₂
armature, the
room dimension and the desired CO
₂
concentration must be set in the menu. By
repeatedly dispensing CO
₂
to the room air,
the CO
₂
concentration will be kept at the
desired level. To compensate inaccuracy
regarding the actual CO
₂
flow and the
entered room dimensions, the controller
will learn from previous CO
₂
dispensing.
Thus, it will automatically rectify the
mentioned inaccuracies.
If
“sensor&generator”
is selected, the CO
₂
regulation will operate similar to the
description above. The only difference is
that the minimum time for a CO
₂
dosing is
higher given that it does not make sense to
trigger the CO
₂
generator for only a second,
for example.
The exact procedure of the
“time
controlled”
function depends on the
following settings. The procedures principal
is shown in the graph on page 21.
When “OFF” is selected, the CO
₂
function is
turned off.
While one of the CO
₂
functions is active, the
fans will run according to the settings
below.
Furthermore,
the “desired
temperature CO
₂
” will be used.
The CO
₂
dispensing will only occur during
daytime.
3.2
Desired temperature CO
₂
Set the desired temperature for CO
₂
mode.
When this temperature is exceeded, the fan
speeds will be increased as long the
settings following MIN/MAX settings allow..
To avoid high CO
₂
wastage, it makes sense
to turn off the fans during the CO
₂
mode. If
a negative pressure has to be maintained,
its also a good idea to let the exhaust fan
run on a very low speed.
3.3
Exhaust fan MAX CO
₂
Set the
maximum fan speed
of the
exhaust fan
during the
“CO
₂
period”
. This
fan speed will never be exceeded. Please
find additional information in chapter 8.
3.4
Exhaust fan MIN CO
₂
Set the
minimum airflow
of the
exhaust
fan
during the
“CO
₂
period
”. This set fan
speed will never* be undercut. Please find
additional information in chapter 8.
*during pressure, sensor calibration is in process,
all fans are turned off.
The minimum fan speed is 10%.
Additionally, “OFF” can be selected. This
means that the intake fan will be switched
off as long as the measured temperature is
below the desired temperature.
Ensure that the fan is still rotating at the set
minimum fan speed and the airflow is
sufficient for cooling the motor.
3.5
Intake fan MAX CO
₂
Set the maximum fan speed of the intake
fan during the CO
₂
period. The specified
value will never be exceeded.
Set intake
F
CO2 MAX
C
AUS
BC
Set exhaust
F
CO2 MIN
C
AUS
BC
Set exhaust
F
CO2 MAX
C
15
A
BC
Set desired
F
tempCO2
C
35
A
C
BC
