14
15
EN
EN
RH set
Min spd
fan
Max spd
fan night
Max spd
fan day
RH set
fan night
RH set
fan day
Temp set
fan
Set
Set
Set
Escape
Escape
Fan scr
Set
Set
Dehumidify
Manual
Set
- Tmp day
- Deh night
Set
Temperature
Set
Set mode
fan
Set
Set
Set RH +/-
+/-
+/-
+/-
+/-
+/-
+/-
+/-
+/-
+/-
+/-
+/-
+/-
Set min.
spd +/-
Set max
spd fan +/-
Set max
spd fan +/-
Set RH set
fan night +/-
Set RH set
fan day +/-
Set Tempset
fan +/-
Set
Set
Set
Set
Set
Set
Set
Set
Set type
-RH + RH
Heater
Set
Set
P/-
Set
Set
Set night
setp +/-
Controlled by RH aux port
Controlled by Heater aux port
Controlled by Fan aux port
The two aux settings can be used to control the heating systems and the humidifiers and dehumidifiers. The menu
structure is as follows:
Pre-heat
The pre-heat function enables you to pre-heat a room before the lights come on. This is to useful
for preventing problems relating to condensation, etc.
Heater (aux)
1x SET
Pre-heat
set point
Pr temp
down
Pr temp
up
1x SET to
attach
Night heater
The pre-heat function enables you to control a heater when the lights are off.
Heater (aux)
2x SET
Night heat
set point
Pr temp
down
Pr temp
up
1x SET to
attach
MENU & KEYS
MENU & KEYS
RH% (aux)
Using an optional aux box, the controller can humidify or dehumidify during the periods lights on and lights off or
always. The menu structure is as follows:
RH% (aux)
Set
Set
Set
RH Set point
Pr RH
up
+
+
+
Pressure - RH
down
-
-
-
Set RH type
RH on only @
RH +
= humidify
RH -
= dehumidify
Night
Day
Always
Confirm by using SET
Therefore, you can opt for humidifying or dehumidifying during the periods lights on and lights off or both.
Advanced VPD menu
AT 29°2 RH 60.2%
PT 22°8 VPD 1.10
You can read the room temperature (AT), relative humidity (RH%), plant temperature (PT), delta-T (DT) and the VPD value
on the VPD display screen. You can switch between PT and DT by pressing the + and – keys in this screen. PT is the
plant temperature measured with the plant temperature camera. Delta-T indicates the difference between AT and PT.
The difference between plant temperature and room temperature provides an indication of whether a plant vaporizes
or not. VPD provides an indication about the vaporization pressure. A crop that vaporizes normally is ca. 2 degrees
cooler than the room temperature. The vaporization pressure (VPD) is usually between 0.6 and 1.5 kPa.
Pressing the SET key on the VPD display screen will open the menu.
PT > AT Dim
PT>AT start dim
off
The crop does not vaporize adequately if the plant temperature is higher than the room temperature. The controller can
intervene by dimming the lights and turning off the CO2 dosing. The difference in temperature can be set by pressing
briefly on the SET key and using the + and – keys to fill in a value. A typical value is – for example, +2 degrees. The
controller will intervene if the leaves of the crop are 2 degrees warmer than the room.
PT>AT shutdown
PT>AT shut down
off
The plant temperature will increase further if the controller has intervened but no measures are taken to restart the
vaporization. The controller will then shut down the lights completely if the plant temperature rises. The difference in
temperature in which the controller shuts down all lights can be set in the PT>AT shut-down option. A typical value in
which the controller does this is u2 degrees higher than in PT>AT Dim (the4 degrees).
Summary of Contents for MAXI CONTROLLER EVO 1.2
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