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
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
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.
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.
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 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.
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