Step 9: Connect the timer wires

Connect the timer wires
Photo: Brian Smith
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Mount the programmable timer on the house wall.

Strip the insulation from the ends of the 24-volt wires that lead from the zone valves to the timer.

Attach the wires to the timer terminals, as shown in the manufacturer's instructions.

Hire a licensed electrician to run power to the timer, if necessary.

Set the timer and run a test to make sure that each zone and all the sprinklers are operating properly.

Finally, adjust any nozzles that are spraying off course.

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    Tools List

    • pvc pipe cutter
      PVC pipe cutter
    • 100-foot tape measure
      100-foot tape measure
    • trenching shovel
      Trenching Shovel
    • trenching machine
      Trenching Machine,
      rents for about $75 a day
    • adjustable pliers
      Large adjustable pliers
    • utility knife
      Utility knife
    • tongue-and-groove pliers
      Tongue-and-groove pliers.
      for tightening threaded PVC fittings
    • ratcheting screwdriver
      Screwdriver,
      for installing the wall-mounted timer

    Shopping List

    1. DRIP IRRIGATION TUBING

    2. MARKER FLAGS

    for marking sprinkler locations before trenching



    3. FLEXIBLE PIPING

    connects sprinklers to PVC pipe



    4. 3/4-INCH AND 1-INCH PVC PIPE

    5. ASSORTED PVC FITTINGS

    6. GROUND STAKES

    to secure drip-irrigation tubing



    7. ASSORTED SPRAY NOZZLES

    8. POP-UP SPRINKLER

    9. PVC CEMENT AND PRIMER

    10. ZONE VALVES

    11. VALVE BOX

    for housing the valves



    12. BACKFLOW PREVENTION DEVICE

    keeps irrigation water from flowing into home’s water supply



    13. GRAVEL

    for spreading under the valve box



    ] 14. BARK MULCH

    for covering the drip irrigation tubing