iGrow 800 - Relative Humidity Staging & Advance Settings Tutorial

iGrow 800 - Relative Humidity Staging & Advance Settings Tutorial

With the iGrow 800, you can control Relative Humidity within your Greenhouse Environment.

Note:  Relative Humidity staging overrides Temperature staging.

Here is a video link that guides you through the control process.


To get to your Humidity staging screen, hit OK->4. Stages->2. Humidity Stages

Now in the Humidity Stages Screen you have:

Humidify: is engaged when the humidity is below the Humidify (Low humidity) setpoint.
Dehumidify: is engaged when the humidity goes above the Dehumidify(High Humidity) setpoint.
Cold De-humidify: is engaged when out temp goes below the threshold value set in advanced screen.

The arrows (buttons 5 thru 8) are used for moving the highlight to the desired stage. The Setup and OK buttons are used to select or deselect the highlighted stage for a device.  For dual channel devices (vents/curtains), the second channel is disabled as shown.

Humidification_Control_1.png

For Curtains:  0% curtain is uncovered, 99% curtain is covered, No Change: Device doesn’t have an affect in that stage.

For Vents:  0% vent is fully closed, 99% vent is fully open, No Change: Device doesn’t have an affect in that stage.

For On Off Devices:
Override Off: Indicates device is Off in that stage, Override On: Indicates device is on in that stage
No Change: Device doesn’t have an affect in that stage.

Advance Humidity Settings:

To get tot the advance Humidity Settings Screen:

From home screen, hit OK->3. System Setup->10. Advance Settings->1. Advance Humidity Settings.

With this screen you have the option of cycling the humidification and dehumidification stages.
For example, suppose the zone humidity exceeds the humidity threshold. Without the cycling option, your system will remain in the dehumidification stage until the humidity falls below the dehumidification threshold by at least 2% RH. In some cases it may be impossible to get below your humidity threshold. For these circumstances and for other cases, it would be helpful to cycle in and out of the humidity control override. This screen gives you the capability to do so.
The options are:
1. Set the override ON duration in minutes and seconds
2. Set the override OFF duration in minutes and seconds
3. Set a low temperature threshold.


Humidification_Control_2.png

Override On Duration: Is the time for the override to remain active
Override Off Duration: Is the time for override to remain inactive/off

Buttons #1 - #4 can be used to select override on/off. Wheel can be used to change the values.

LowOutTemp: If temperature falls below this value, override will trigger.
Button #5 is used to select low out temp option. Wheel can be used to change the values.

The LowOutTemp threshold is the outside temperature below which the dehumidification stage will revert to its Cold dehumidification state. For example, you may want to dehumidify but if it’s very cold outside, you may want to turn on the heat instead of open a vent and turning on a fan.

 

Cycling Program if no Humidity Sensor is present:  This humidity settings option can be useful in other applications even if you do not have a humidity sensor. For example, you may want to do misting control with a particular output, You can set up a “software” humidity sensor, a humidity time window and threshold so that the cycling will take place during your selected time period.

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