1. Introduction
This manual provides comprehensive instructions for the installation, setup, operation, and maintenance of your Irritrol Rain Dial RD900-INT-R 9-Station Indoor Irrigation Controller. This controller is designed for residential indoor use, offering efficient and flexible irrigation management for your landscape. Please read this manual thoroughly before installation and operation to ensure proper function and longevity of your device.
Image 1.1: Irritrol Rain Dial RD900-INT-R controller, power adapter, and user manual.
The image displays the Irritrol Rain Dial RD900-INT-R irrigation controller, which is gray with a blue control panel. The control panel features an LCD screen, a large rotary dial for mode selection, and various buttons for programming. A power adapter and a printed instruction manual are also visible next to the controller.
2. Safety Information
- Read all instructions carefully before operating the controller.
- Ensure the power supply is disconnected before performing any wiring or maintenance.
- This controller is designed for indoor use only. Do not expose it to outdoor elements unless specifically housed in a weather-resistant enclosure.
- Do not attempt to repair or modify the controller. Refer all servicing to qualified personnel.
- Keep the controller away from water sources and excessive humidity.
3. Package Contents
Verify that all items are present in the package:
- Irritrol Rain Dial RD900-INT-R Irrigation Controller
- Power Adapter (24Vac, 60Hz, 1.25A)
- User Manual
- Mounting Hardware (screws, anchors)
Image 3.1: Contents of the Irritrol Rain Dial package.
This image shows the Irritrol Rain Dial controller in its closed gray casing, alongside its black power adapter and the printed instruction manual. The controller's front cover features the "RAIN DIAL" logo.
4. Installation
4.1 Mounting the Controller
- Choose a suitable indoor location that is protected from direct sunlight, extreme temperatures, and moisture.
- Use the provided mounting hardware to securely attach the controller to a wall. Ensure it is mounted vertically.
- Allow sufficient space around the controller for ventilation and access to wiring terminals.
Image 4.1: Rear view of the controller for mounting.
The image shows the back of the gray Irritrol Rain Dial controller, highlighting the molded plastic structure and a keyhole-shaped mounting point at the top center, along with two circular mounting points at the bottom.
4.2 Wiring the Controller
WARNING: Ensure power is disconnected before wiring.
- Open the controller's front cover to access the wiring terminal board.
- Connect the common wire from your irrigation valves to the terminal marked COM.
- Connect each zone valve wire to its corresponding numbered terminal (1-9).
- If using a rain sensor, connect its wires to the designated sensor terminals.
- Connect the provided power adapter to the 24 VAC INPUT terminals.
- Once all wiring is complete, plug the power adapter into a standard electrical outlet.
Image 4.2: Internal wiring connections.
The image displays the open Irritrol Rain Dial controller, revealing the internal components. A black plastic housing covers the main electronics, and a circuit board with screw terminals is visible. The terminals are labeled for zones 1 through 9, "COM" (common), and "24 VAC INPUT". A ribbon cable connects the main unit to the terminal board.
5. Initial Setup and Programming
The Rain Dial controller features a user-friendly interface with a rotary dial and push buttons for programming.
Image 5.1: Control panel and programming guide.
This close-up image shows the blue control panel of the Irritrol Rain Dial controller. The LCD screen displays "9:17 PM". The rotary dial is set to "CURRENT TIME". Various buttons for adjusting time, schedule, and programs are visible. A printed programming guide is attached to the inside of the controller's door, detailing steps for automatic and manual operation.
5.1 Setting Current Time and Day
- Turn the rotary dial to CURRENT TIME.
- Use the + and - buttons to adjust the current time.
- Use the DAY button to set the current day of the week.
5.2 Programming Watering Schedules
The controller supports three independent programs (A, B, C) for flexible watering.
- Turn the rotary dial to SET PROGRAMS.
- Select the desired program (A, B, or C) using the A/B/C switch.
- Turn the dial to START TIMES to set up to three start times per program. Use + and - buttons to adjust.
- Turn the dial to STATION RUN TIMES to set the watering duration for each station (valve). Use + and - buttons to adjust.
- Turn the dial to SCHEDULE to select watering days (e.g., specific days of the week, odd/even days, or interval watering).
- Once programming is complete, turn the dial to RUN for automatic operation.
Tip: Use the "Watering Schedule" chart inside the controller door to record your program settings for easy reference.
6. Operating the Controller
6.1 Automatic Operation
With the rotary dial set to RUN, the controller will execute the programmed watering schedules automatically.
6.2 Manual Operation
To manually operate a station or program:
- Manual Station: Turn the dial to MANUAL. Use the + and - buttons to select the station and set its run time. Press RUN to start.
- Semi-Automatic Program: Turn the dial to SEMI-AUTO. Select program A, B, or C. Press RUN to start the selected program.
6.3 Special Functions
- Climate Logic Ready: The controller is compatible with the optional CLIMATE LOGIC Wireless Weather Sensing System. When connected, it automatically adjusts watering based on weather conditions, optimizing water usage.
- Rain Sensor Ready: A rain sensor can be connected to automatically suspend watering during rainfall. The controller includes a sensor bypass switch.
- Water Well Recovery: This feature allows for a delay between stations, which is beneficial for systems drawing water from a well, preventing pump overload.
7. Maintenance
- Keep the controller's exterior clean with a soft, damp cloth. Do not use abrasive cleaners.
- Periodically check wiring connections to ensure they are secure.
- In areas prone to power outages, consider a surge protector for the power adapter.
- If the controller is stored for an extended period, remove the power adapter.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Controller display is blank. | No power, faulty power adapter. | Check power outlet, ensure adapter is securely connected. Test adapter if possible. |
| Stations do not water. | Controller in OFF mode, rain sensor active, wiring issue, faulty valve. | Ensure dial is on RUN. Check rain sensor bypass. Verify wiring connections. Test valves manually. |
| Incorrect watering times/days. | Incorrect programming. | Review and re-program start times, run times, and watering days as per Section 5.2. |
9. Specifications
- Model: RD900-INT-R
- Stations: 9
- Input: 24Vac, 60Hz, 1.25A (30VA)
- Output: 24Vac, 60Hz, 1.0A Max Total, 0.5A Max Per Station
- Dimensions: 7.75 x 3.75 x 7 inches
- Item Weight: 4 pounds
- Display Type: LCD or LED
- Material: Plastic
- Manufacturer: Irritrol
- UPC: 090258051817
Image 9.1: Product specification label.
The image shows a product label for the Irritrol Rain Dial controller, model RD900-INT. It lists electrical specifications including input (24Vac, 60Hz, 1.25A) and output (24Vac, 60Hz, 1.0A Max Total, 0.5A Max Per Station). It also indicates "FOR INDOOR USE ONLY" and includes UL listing marks.
10. Warranty and Support
For warranty information and technical support, please refer to the documentation included with your product or visit the official Irritrol website. Keep your purchase receipt as proof of purchase.
