6
Connecting an Earth Ground Device
Note: In order for the electrical surge components built into your Rain Dial-R to function
properly, the controller must be connected to an earth ground device, such as a copper-clad
ground rod or metal water pipe, using solid copper wire. This connection is especially important
when the controller is installed in a lightning-prone area.
1. Connect a 12–16
AWG ( 2mm2–
1.3mm2 ) solid-
copper wire to
the ground device
and route into the
controller through
an access opening
in the base of the
cabinet.
2. Secure the ground
wire to the terminal
labeled “Earth
Ground.”
Connecting the Power Source - Indoor Model
1. Route the plug-in
transformer cable
through the small hole
provided in the bottom
of the cabinet.
2. Tie a knot in the cable
to provide a strain
relief, and connect the
wires to the terminals
labeled “24 VAC” (in
either order).
3. Close the control
module and plug the
transformer into a wall
outlet. The controller is
now ready to program
and operate.
Note: To immediately
test-run the Rain
Dial-R irrigation control
system, refer to the
“Controller Station Test
Feature” on page 8.
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