9. Appendices
Rain Bird
®
ET Manager Series - Installation and Operation Manual 70
Master valve and pump control can be utilized with
your ET Manager. Please carefully read the given meth-
ods below when using master valve and pump control
with your ET Manager.
Master Valve Control
There are three options for using the sprinkler master
valve:
1. Use two isolation relays and a separate com-
mon. This is the safest scheme to use the
sprinkler master valve.
2. Use a separate common only. This scheme is
constrained because the master valve will turn
on with every sprinkling cycle, even when
valves are not actually watering.
3. Use Valve Group A only by routing the same
common to the master valve and the sprinkler
valves. This method is limited to using only
one valve group.
See Figures 18, 19, and 20 for the wiring diagrams dis-
playing Options 1 through 3.
Appendix X. Master Valve and Pump Control Installation
with ET Manager
Figure 18. ET Manager Master Valve Wiring Diagram using Isolation Relays
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