iGrow1400 - Dehumidification/Humidification Programming

iGrow1400 - Dehumidification/Humidification Programming

With The iGrow1400, the Dehumidify/Humidify option it takes you to a screen that lets you program the equipment you want to use in each of the four humidity override states.

Here is a video Link to give you a more in depth understanding of the iGrow1400 Dehumidification/Humidification Programming


To program, hit Enter/Menu -> and then highlight Dehumidify/Humidify and hit Enter/Menu

Dehum_1.png
Now the four states are:

DH1 is engaged when the zone’s humidity reading is immediately above the ‘High’ humidity setpoint. 

In the example, Fan1 will go on and Vent1 will go to 5%.

DH2 is engaged when the zone’s humidity reading is above the setpoint by 5%

DHLT is the dehumidification state that is engaged when the outside temperature is below a user set value on the next screen.

H or humidify stage is engaged when zone’s humidity is below the ‘Low’ Humidity Setpoint 

 Dehum_2.png

For On/Off equipment, a “1” indicates that the equipment is to be turned On in the override state.

A “0” would indicate that it is to go Off. 

The - - indicate that the equipment is not to be subject to the override. 

For proportional devices, a percentage open for vents and a percentage closed for curtains would be entered for the override.  

 Dehum_5.png

 For vents, the percentage open is a “minimum” value.  For example, if the vent is open to 30% because of cooling, then when the dehumidification state is active, the vent will stay at 30%.  However, if the vent were closed, and the DH1 state becomes active, the vent will go to 5% according to our example.

By pressing the “next” button to scroll to the next screen down lets you program some additional features for humidity control. When in a dehumidify override state you have the option of cycling the dehumidification state. 

Dehum_3.png

In the example, a Max On for 5 minutes and a Min Off for 10 minutes is programmed.  This means that if the humidity is above the target, the dehumidify state will cycle on for 5 minutes and off for ten.  If during the On time, the humidity drops below the target, the dehumidification state will end and the equipment will return to normal temperature control.

The Heat Boost is another means of reducing the humidity. You can automatically increase the setpoint by the amount entered. This adjustment is subject to the On/Off cycling. If you want to turn off the dehum cycling, then just set the Min Off to 0.

The final entry is the DHLT outside temperature below which the low temp dehum stage is enabled. From the example, when the outside temperature is less than 35 F, the exhaust fan will be turned off and Vent1 will go to a minimum of 5 % open.
Here is a view of Relative Humidity Control with LinkConn 1000 Software which a provides a more simpler control view.
Dehum_4.png

    • Related Articles

    • iGrow 1400 - Deadband Programming and Understanding

      With the iGrow1400 controller you can set up deadbands. Here is a video to give you a more deeper understanding. iGrow 1400 Deadband Programming and Understanding Now Deadband, sometimes called “hysteresis” band. For cooling, it is the number of ...

    • iGrow 800 Understanding Videos

      Please view the following videos in the order that there in, so you can program your controller with confidence, and also have an understanding of what Setpoints are for, Staging of your equipment in Temperature and Humidity Stages, as well as how to ...

    • iGrow 1400 Manual

      Attached, you will find the iGrow 1400 manual.

    • iGrow 800 Start Up Information

      Attached is an iGrow800 Manual, iDrive 300 Manual, wiring diagram for your Temperature & Humidity Senso

    • iGrow 1800 User Manual and Training Videos

      Attached is the iGrow 1800 User Manual Also here is a list of video links to assist you in obtaining a General understanding of how to program the iGrow1800 controller.