Note: The built-in circuit protection in all Rain Dial controllers
requires an earth ground path, such as a copper-clad ground rod or
metal water pipe, to help protect the controller from power surges,
and is especially important in lightning-prone areas
.
1. Connect a 12–16 gauge solid-copper wire to the ground device
and route into the controller cabinet through the field wire opening.
2. Secure the ground wire to the terminal labeled “Earth Ground.”
EARTH
GROUND
MV/
PUMP
789101112
123456
24 VAC
VC
Connecting the Earth Ground
12
Metal Water Pipe
8' Copper-clad Ground Rod
(in moist soil)
Figure 5
66767_RainDial 0428A 3/28/07 2:24 PM Page 12
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