Owner's Manual

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Zone / ET Data Menu
Note:
The controller is capable of running irrigation programs based on ET (evapotranspiration). When the ET
functions are activated, the controller automatically adjusts program run times according to the ET data. A weather
station or ET gauge needs to be connected to the sensor input terminals of the controller or at the central to provide
ET data.
Plant Factor: This menu item enables you to assign a percentage factor to any zone for the type of plant material that
the zone is irrigating. For instance, you may assign a bluegrass turf zone a factor of 100% and a ground cover zone
that needs less water a 50% factor. Use the Up and Down arrow keys to get to the station desired. Use the Right arrow
to place the cursor under the percentage field and edit as desired. Press ENTER to save.
Application Rate: This is the amount of water a zone applies in inches per hour. For example, a zone of fixed spray
heads may apply the water at the rate of 2" per hour while a rotary sprinkler zone may apply water at the rate of 0.50"
per hour.
You can determine a zone's application rate by multiplying it's gallons per minute by 96.3 and dividing that figure by the
square feet covered by the zone. To enter the application rate, use the Up and Down arrow keys to get to the station
desired.
Use the Right arrow key to move the cursor under the application rate field and edit the data. Press ENTER to save.
Default ET: This is the minimum ET figure (in inches) that is used as the default ET regardless of the weather
conditions or if data is missing from the ET gauge or weather station. ET can vary depending on the time of the season
and weather. Generally, daily ET can be from 0.00" to 0.50". Use the Up or Down arrows to toggle the value up or
down. Press ENTER to save.
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