6
Important Weather Reach Terminology
In order to help you better understand your Weather Reach Receiver, here is a simple list of the
terminology used with this product. Please refer to this glossary whenever necessary.
Sprinkler Controller:
The sprinkler controller manages your sprinkler valves. It should be
correctly wired to Weather Reach Receiver according to ET Enable specifications, please see the
Weather Reach Receiver Users Guide, page 17 for more detailed information. Your sprinkler
controller needs to be programmed with the following settings:
Available days to irrigate (typically set to every day)
Cycle start times
Valve run-times (which is enough time to apply the needed amount of water)
The Weather Reach Receiver will allow watering only on the days when watering is needed,
based on current weather conditions. The Weather Reach Receiver automates the sprinkler
management and works with your sprinkler controller to successfully water your landscape.
ET:
The abbreviation for evapotranspiration. (Please refer to Principle #3 on page 1, for more
information on ET.)
Start Threshold:
The amount of water that must evaporate before the Weather Reach Receiver
will allow watering to occur. The Start Threshold represents how many inches (or mm) of water
should be applied to your landscape during each watering cycle, that was lost due to evaporation.
This is a numerical value based on your soil type and the root depth of your plants. Please see
your Users Guide on page 44 for chart information to determine this value.
Soil Moisture Depletion Balance:
This is the amount of water depleted from your soil. This
balance is constantly changing because it is based on ET, rainfall, and residual from previous
watering cycles. When the Soil Moisture Depletion Balance reaches the programmed Start
Threshold, the Weather Reach Receiver will allow watering.
