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Patched — Rain Bird Sprinkler Timer Isa 304 Manual

The ISA 304 is designed for indoor use and manages up to four watering zones.

The ISA 304 is a 4-zone irrigation controller that can be programmed to water your lawn and plants at specific times. It has a user-friendly interface and can be installed indoors or outdoors. rain bird sprinkler timer isa 304 manual

  1. Mounting the Timer: Mount the ISA 304 timer in a location that is easily accessible and protected from the elements. Make sure the timer is securely fastened to the wall or mounting bracket.
  2. Connecting the Power: Connect the power source to the ISA 304 timer. The timer requires a 24V AC power source, which can be supplied by a transformer or a battery backup system.
  3. Connecting the Sprinkler System: Connect the sprinkler system to the ISA 304 timer. Make sure to follow the manufacturer's instructions for connecting the valves and solenoids.
  4. Programming the Timer: Program the ISA 304 timer by setting the current time, date, and watering schedule. Use the arrow buttons to navigate the menu and set the desired parameters.
  5. Setting the Watering Schedule: Set the watering schedule by selecting the days of the week and the start times. You can program up to 4 start times per day, with a watering duration of 1-240 minutes.
  6. Enabling the Rain Sensor: If you have a rain sensor connected to the ISA 304 timer, enable it by setting the rain sensor switch to the "on" position.

Set Duration: Turn the dial to Custom Schedule – Duration. Select a station with the arrow keys and adjust its run time from 1 minute to 2 hours. Troubleshooting and Maintenance The ISA 304 is designed for indoor use

Basic setup (quick steps)

  1. Mount controller on a vertical surface near transformers and valves; keep away from direct water exposure.
  2. Turn controller power off before wiring. Connect low-voltage valve wires to station terminals (1–4). Connect common wire to COM terminal.
  3. If used, connect master valve or pump start to the “P/MV” (pump/master valve) terminal.
  4. Power the unit: restore transformer/AC supply, then set current time and day.
  5. Program zones:

    You can find the full official documentation in the Rain Bird ISA Series Manual. Rain Bird ISA 300 / 400 Series Sprinkler Timer Manual Mounting the Timer : Mount the ISA 304

    • Note: If you only want to water once a day, leave Start 2, 3, and 4 in the "OFF" position.

    Finish: Always return the dial to "Auto/Run" for the timer to operate automatically. Manual Watering & Testing