Rain Dial RD-600/900/1200: Run Two Zones Simultaneously by Combining Wires

New Canal Pump Allows More Flow: Combine Zone Wires at Controller

With more water available, you can run two zones at once on Rain Dial RD-600/900/1200.

1. Open controller. 2. Combine Zone 2 wire onto Zone 1 terminal. 3. Combine Zones 3 & 4 onto Zone 2 terminal. 4. Continue pairing as desired.

RD series outputs enough current for two standard solenoids per terminal.

Match head types: Sprays with sprays, rotors with rotors. Mixed types = uneven watering.

Fewer run cycles, same coverage. No programming needed—just wiring.

Irrigation: Irritrol Rain Dial 900: Split Front/Back Yard onto Programs A and B; Rain Bird RC-7A Not Watering: Controller vs. Valve Diagnosis; Hardie Rain Dial 9‑Station Display Reverts to PM – Microprocessor Failing; Rain Dial RD-600 Flashing Display After Year of Non-Use; Resetting a Rain Dial Hardie Controller (Model P/NHHA11272); Rain Dial RD-900: Zones 1 & 2 Low Voltage — Check for Short; Irritrol Rain Dial Runs Program A Twice—Extra Start Time Programmed; Hardie Rain Dial 1993: Zones 6 & 7 Run Together—Crossed Wire or Controller; Rain Dial Won't Program: Power Cycle Without Battery, Then Replace Panel; Rain Bird ESP-6SI Controller: Zones Won't Activate After Repair

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