iGrow1800 - Setpoint Overview and understanding
You will be able to use up to 8 setpoints in a 24 hour time period. Within each day Setpoints are based on time and temperature to produce an ideal environment. By placing setpoints during different times of the day you can regulate the temperature within a range for target temperatures and humidity. When a setpoint is in affect at a certain time length the controller will activate the necessary equipment in heating and cool stages to bring the environment back to Norm. The same applies when the humidity rises or falls beyond the target low/high setpoint. When one or more setpoints are used the second or subsequent setpoints will become the active setpoint at the start time and the previous setpoint will end.
To program hit Enter/Menu-> then highlight Setpoint/TimePeriod then Enter/Menu
You can cycle through each of the eight start times with the + or - keys.Pressing Enter takes you to the Enabled or Disabled option. Setpoint 1 is always enabled. Setpoint’s 2-4 are disabled. You may enable them by use of the + key.
The start time is either a fixed time or it can vary daily based on the increase or decrease in day length. This day length is an Astronomic Adjustment based on the latitude and longitude entries that you made as shown in the Setup Location portion of this manual. By pressing the + key at the Start Time entry, you will get the following:
Press + once = SRise Press + twice = SSet
You would use the Srise option for the setpoint that you program at the beginning of the day. Similarly, you would use the Sset option for the end of the day setpoint. The adjustment will be made each midnight and so everyday you will see a change in the “Start Time”.
Ramp Time
The ramp time enables a smooth transition of the target temperatures between the time periods. If the ramp time is set to 0 there will be an immediate step transition in the set points from the previous from the current setpoint to the following time period. If the ramp time is not zero, the ramping begins at the end of the time period
Heat and Cool Setpoints The third line is where you enter the heat and the cool setpoints, that is, the low temperature and the high temperature targets.
Humidity Setpoints The humidity range is shown on the fourth line. If the humidity is below the lower value, you enter the humidification stage. If humidity is above the higher number you go into the dehumidification stage
Here is a view of Setpoint Programming with LinkConn 1800 Software which a provides a more simpler control view.