10. Glossary
Rain Bird
®
ET Manager Series - Installation and Operation Manual 78
Slope: When sprinklers apply water faster than the soil
can absorb it, water can run-off. Sloping landscapes
increase the chance of run-off occurring.
Smart Control: The smart control term is used to des-
ignate water efficient systems which operate with your
sprinkler system by calculating the evapotranspiration
rate, or soil moisture.
Soil: Soil is a habitat for soil organisms and plant roots.
It functions as a storehouse for nutrients and a water
reservoir. It contains and supplies water, oxygen, nutri-
ents, and provides mechanical support for plant
growth.
Sprinkler Controller: A sprinkler controller is an elec-
tronic timer that activates automatic sprinkler control
valves within a sprinkler system.
Sprinkler System: A sprinkler system delivers water to
a landscape and consists of piping, sprinkler valves,
sprinkler heads, and a sprinkler controller. Rain and
water from the sprinkler system replaces water used in
the landscape.
Station: Stations on a sprinkler controller are connect-
ed to specific valves that are activated according to your
ET Manager. Each station should have plants with sim-
ilar water requirements within its area. Stations are
also referred to as “zones.” Stations must be assigned to
specific ET Manager Valve Groups A, B, or none.
Temperature Interrupt: If the hourly weather signal
contains air temperatures that reach the Temperature
Interrupt setting, watering is interrupted. The weather
interrupt is cancelled once the air temperature rises
above the programmed interrupt setting received in the
hourly weather signal.
Terminal Cover: The terminal cover protects the wire
terminal connections on your ET Manager. To access
the wire terminals, the terminal cover will have to be
removed.
Test Counter: The Test Counter registers every signal
received, increasing from 1 to 255 counts. If 255 signals
are received and counted, the Test Counter will reset to 0.
Tipping Rain Gauge (Model ETM-RG): A Rain Bird
approved, optional on-site tipping rain gauge (1mm/
tip) with 30' cable can be connected to the ET
Manager. The on-site rainfall value can be used in
place of the rainfall value broadcast in the weather
signal to provide accurate on-site rain data.
Units: The ET Manager can calculate and display val-
ues in either English or Metric units.
Valve Groups A and B: Your ET Manager controls two
Valve Groups (A and B) by enabling sprinkler controller
output to the valve common. Each valve group must
have separate common wires to the valves in the group.
For example, lawn valves could be in Valve Group A and
shrubs valves in Valve Group B.
Valve Group A & B Indicator Lights: There is one
Indicator Light for each valve group, A and B. A green
light indicates watering is enabled, allowing the sprin-
kler controller to activate the valve. A red light indicates
watering is suspended or interrupted until watering is
needed.
Water Window: The ET Manager Water Windows, the
Automatic and Daily Windows, must be synchronized
with the watering times set in your sprinkler controller.
The Watering Widows will not start a watering cycle but
are used by the ET Manager to control watering during
that programmed period of time.
Weather Info: You can view detailed weather informa-
tion and graphs of the current weather conditions. The
weather info is stored for fourteen days.
Weather Reach Signal Provider (WRSP): The role of
your Weather Reach Signal Provider (WRSP) is to
retrieve weather information from local weather sta-
tions and send the weather signal to your ET Manager.
Weather Reach Water Management System: The
Weather Reach Water Management System automates
commercial and residential sprinkler schedules using
real-time weather conditions which are sent to your ET
Manager via your local Weather Reach Signal Provider
(WRSP).
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