Rain Bird ESP-SMT Installation & Operation Manual

Contents

Rain Bird ESP-SMT Installation & Operation Manual Manual pdf 66 page image

ESP-SMT Smart Modular Control System61Connect TransformerESP-SMT Indoor ControllerThe ESP-SMT indoor controller has an external transformerthat reduces standard supply voltage to 24 VAC tooperate the sprinkler valves. You will need to connect thistransformer to terminals within the controller cabinet.F CAUTION: To prevent electrical shock and potentialdamage to the transformer, DO NOT plug in thetransformer until you have connected its cable to thecontroller.A Make sure the transformer is NOT plugged in.B Feed the three transformer wires through the bottomleft hole in the cabinet. Then pull about 12” of thecable up into the cabinet.C Tie a loose overhand knot in the cable just insidethe controller to prevent strain on the connectorterminals.D On the horizontal terminal strip at the top of thecontroller cabinet, connect the green wire to the“GND” terminal.E Connect one of the remaining two wires to a 24 VACterminal. Connect the other wire to the second 24VAC terminal. Connect either wire to either 24 VACterminal; polarity of these wires is not important.F Verify that all connections are secure. Then plugthe transformer into any standard three-prongedgrounded electrical outlet.! NOTE: All electrical connections and wiring runsmust be made according to local building codes.ABCDE