Getting Started
Page 6
Getting Started
Sprinkler System Basics
There are four main components to an Acclima SC24/36 automatic system, controller,
zone valves, sprinklers, and soil moisture sensors. The following is an example of a
typical installation.
Valve 1 – Zone One – Front
Side Lawn - Sensor Program
(S1)
Valve 2 – Zone Two – Front
Lawn – Sensor Program (S1)
Valve 3 – Zone Three – Side
Shrubs – Timer Program A
Valve 4 – Zone Four – Garden –
Timer Program B
Valve 5 – Zone Five – Back
Lawn – Sensor Program (S5)
The controller signals the zone valves when to start and stop the flow of water to the
sprinklers. The sensors communicate the soil moisture level to the controller, and the
sprinklers apply the water.
Each zone valve controls a group of sprinklers called a zone. The zones should be
planned and installed according to microclimates or the types of plants or turf being
watered, the sun/shade conditions, the amount of water delivered by the sprinklers and
the available water flow and pressure.
The watering schedule determines when and how long each zone will be watered. The
SC24/36 uses two types of watering schedules, timer programs and sensor programs.
The SC24/36 provides four independent timer watering programs (called A, B, C and D)
and up to 24/36 sensor programs (called S1, S2, S3…S24/36). Each zone is assigned to
one sensor Program or to one or more timer programs.
(except in cases of soak cycles and multi-zone watering). This is called a watering cycle.
About the Sensor
The Acclima Digital TDT™ soil moisture sensor accurately measures the volumetric
water content in the soil and communicates it to the controller.
Soil moisture is reported as a
percentage of water by volume. The
sensor automatically takes an
average moisture reading
over the length of the stainless steel rods every time a sensor program is scheduled to
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