1. Introduction and Overview
The Irritrol Rain Dial RD900-EXT-R is an advanced 9-station outdoor irrigation controller designed for residential use. This controller provides efficient water management capabilities, including compatibility with the optional Climate Logic Wireless Weather Sensing System. When integrated with Climate Logic, the Rain Dial-R automatically adjusts watering schedules based on real-time weather conditions, optimizing water usage and promoting a healthy landscape.
Key features of the RD900-EXT-R include:
- Climate Logic Ready: Automatically reschedules watering based on weather conditions.
- Remote Control Ready: Compatible with CRR (Contractor Residential Remote) remote series.
- Rain Sensor Ready: Features a sensor bypass switch and dedicated terminal for sensor hookup.
- Three Independent Programs: Offers programming flexibility with programs A, B, and C to meet diverse landscape watering needs.
- Water Well Recovery: Provides an option for pump circuit ON or OFF during the delay between stations.
2. Setup and Installation
This section outlines the general steps for installing your Irritrol Rain Dial RD900-EXT-R controller. For detailed wiring instructions, refer to the video provided below and consult a qualified electrician if unsure.
2.1 Mounting the Controller
The RD900-EXT-R is designed for outdoor installation. Choose a suitable location that is protected from direct sunlight and extreme weather conditions, yet accessible for programming and maintenance. Ensure the mounting surface is stable and can support the controller's weight.
- Open the controller's front cover.
- Mark the desired mounting holes on the wall using the controller's backplate as a template.
- Drill pilot holes and secure the controller to the wall using appropriate screws and anchors.
2.2 Wiring the Controller
Before wiring, ensure the main power supply to the irrigation system is turned OFF at the circuit breaker. Incorrect wiring can damage the controller or cause electrical hazards.
Connect the common wire from your irrigation valves to the terminal marked "C" on the controller. Connect each zone wire to its corresponding station terminal (1-9). If using a master valve or pump start relay, connect its wire to the designated terminal. Ensure all connections are secure.
For a visual guide on accessing and managing the terminal board, refer to the video below:
Video 1: This video demonstrates the removal of the Irritrol Rain Dial Timer and Terminal Board, which can be helpful for understanding the internal wiring and component access during installation or maintenance.
3. Operating Instructions
The Irritrol Rain Dial RD900-EXT-R features a user-friendly dial and button interface for programming and manual operation.
3.1 Setting Current Time and Day
- Turn the dial to the CURRENT TIME position.
- Use the UP and DOWN arrow buttons to adjust the current time.
- Use the NEXT button to advance to setting the current day of the week.
- Use the UP and DOWN arrow buttons to select the correct day.
3.2 Programming Watering Schedules (Programs A, B, C)
The controller allows for three independent programs (A, B, C) to manage different watering needs.
- Turn the dial to SET PROGRAMS.
- Press the PROGRAM button to select Program A, B, or C.
- Use the UP and DOWN arrow buttons to set the desired start times for the selected program. Multiple start times can be set per program.
- Turn the dial to STATION RUN TIMES.
- For each station (1-9), use the UP and DOWN arrow buttons to set the watering duration.
- Turn the dial to SCHEDULE.
- Use the UP and DOWN arrow buttons to select the watering days (e.g., specific days of the week, odd/even days, or interval watering).
3.3 Manual Operation
To manually operate a station or all stations:
- Turn the dial to RUN MANUAL.
- Use the UP and DOWN arrow buttons to select the desired station or "ALL" for all stations.
- Press the START button to begin manual watering.
- To stop manual watering, turn the dial to OFF or press the STOP button.
3.4 Stopping Irrigation
To temporarily or permanently stop all irrigation, turn the dial to the OFF position.
4. Maintenance
Regular maintenance ensures the longevity and optimal performance of your Irritrol Rain Dial RD900-EXT-R controller.
- Cleaning: Periodically wipe the controller's exterior with a soft, damp cloth. Avoid abrasive cleaners or solvents.
- Battery Backup: The controller may contain a battery for retaining programming during power outages. Check and replace this battery as needed, typically annually. Refer to the battery compartment for type and replacement instructions.
- Winterization: In regions subject to freezing temperatures, it is recommended to disconnect the controller from the power supply and drain all water from the irrigation system to prevent freeze damage.
- Wiring Inspection: Annually inspect all wiring connections for corrosion or damage. Ensure all terminals are secure.
5. Troubleshooting
This section addresses common issues you might encounter with your irrigation controller.
| Problem | Possible Cause | Solution |
|---|---|---|
| Controller display is blank. | No power, tripped circuit breaker, faulty transformer. | Check power outlet, reset circuit breaker, test transformer output. |
| Stations not watering. | Controller in OFF mode, rain sensor activated, faulty wiring, valve issues. | Ensure dial is in RUN position, check rain sensor bypass, inspect wiring, manually test valves. |
| Incorrect watering schedule. | Incorrect program settings, incorrect current time/day. | Verify program start times, run times, and watering days. Confirm current time and day are accurate. |
| Watering during rain. | Rain sensor not connected, faulty rain sensor, rain sensor bypass engaged. | Check rain sensor connection, test sensor operation, ensure bypass switch is not engaged. |
6. Specifications
Below are the technical specifications for the Irritrol Rain Dial RD900-EXT-R 9-Station Outdoor Irrigation Controller:
- Model: RD900-EXT-R
- Brand: Irritrol
- Number of Stations: 9
- Installation: Outdoor/Indoor
- Item Weight: 4 pounds
- Color: Tan
- UPC: 090258051794
- Included Components: 9 Station Outdoor Controller
- Manufacturer: Irritrol
7. Warranty Information
For detailed warranty terms and conditions, please refer to the official Irritrol website or the warranty documentation included with your product packaging. Warranty coverage typically includes defects in materials and workmanship for a specified period from the date of purchase.
8. Support
If you require technical assistance, have questions about your controller, or need to troubleshoot an issue not covered in this manual, please contact Irritrol customer support or visit their official website for additional resources, FAQs, and contact information.
Official Irritrol Website: www.irritrol.com (Example link, actual link may vary)
