Instruction manual 1.0.0 rev1 en
GROW
BASE
20
airflow is sufficient for cooling the
motor. This applies for standard duct
fans (AC) only.
Set the maximum fan speed of the intake
fans. Separate values for day and night are
available.
To avoid the fans running on full speed
with only a small exceedance of the desired
temperature, an allowed deviation can be
set.
The actual fan speed within this allowed
deviation depends on the minimum and
maximum fan speeds set on the previous
screens.
Some other manufacturers call this
function hysteresis.
This setting has two different meanings
depending on whether a pressure sensor is
connected:
Without a pressure sensor connected:
With different fan speeds of the intake and
exhaust fans, a negative pressure is
maintained inside the room, which avoids
the escape of odours from the grow room.
With this value, the amount of negative
pressure can be set. Furthermore, the
intake and exhaust fans can be balanced if
different fans are used. For example, if a
value of 10% is set, this means that the
intake fan will always turn 10% less
compared to the exhaust fan.
With a pressure sensor connected:
The setting limits the speed of the intake
fan compared to the exhaust fan. For
example, with a value of 0%, the intake fan
will at a maximum go as fast as the exhaust
fan. With this setting, having positive
pressure can be avoided in case of an
inappropriately calibrated pressure sensor.
Set the desired negative pressure in Pa.
This setting is only relevant when a
pressure sensor is connected.
Pa = Pascal
One Pa is equivalent to the pressure
difference of approximately 7cm altitude in
the earth atmosphere.
Press the button while this screen is shown
to calibrate the pressure sensor. During
calibration (which takes about one minute_
all fans will be turned off. Further
information can be found in the pressure
sensor’s manual.
If “ON” is selected, the pressure sensor will
be automatically calibrated 10 minutes
before the “day period” starts (only when a
pressure sensor
PRES
SENSE
is connected)
Set intake
F
day MAX
C
50
A
BC
Deviation rpm
F
reduced
C
0.2
A
C
BC
Set negative
F
pressure
C
10
A
BC
Set negative
F
pressure
C
5Pa
BC
Cal. pressure
F
sensor
BC
Auto calibr.
C
F
ON
BC
