Page 2 - Introduction; Contents
i Introduction The Toro wireless rain sensor system, model TWRS-I for rain sensing and TWRFS-I for rain andfreeze sensing, is a powerful, water conservation and management tool that connects your automaticirrigation system to actual environmental factors vital to the health and maintenance of yourla...
Page 3 - English; button that gives you manual control over the
1 English The wireless sensor system is comprised of a programmable, weather-resistant receiver moduleand a sensor module with built-in transmitter. The receiver installs next to the irrigation controllerand connects to the controller’s 24 Vac power source and sensor input terminals (if equipped) or...
Page 4 - Step 1; See Page 8; Step 2
Getting Started The wireless rain sensor system is designed for easy installation, setup and years of trouble-freeoperation. In most cases, the system components can be installed and fully operational withinminutes. All you will need is a Phillips screwdriver and basic do-it-yourself skills. If you ...
Page 5 - The sensor module is installed.; Step 5
3 The sensor is adjusted to the preferredrainfall activation level. See page 11 . The sensor module is installed. See page 11 . The operating features are set to yourpreferences. See page 14 . A sensor installation site is chosen and the systemis tested again to verify operation. See page 10 . Step ...
Page 6 - Receiver Module Features
4 Receiver Module Features 1 – Setup Button –Accesses the receiver setup and operating features. 2 – Adjust Button –Selects settings within the receiver setup and operating features. 3 – Mast Antenna –Adjusts easily for best signal reception. 4 – Digital Display –High-resolution LCD screen provides ...
Page 7 - Installing the Receiver Module; • The antenna will be unobstructed and is able to be adjusted.
Installing the Receiver Module Important: Installation of this product must comply with national and local building and electrical codes. For assistance, contact a professional irrigation system contractor in your area. The receiver module is suitable for either indoor or outdoor installation. Selec...
Page 11 - Sensor Module Features
9 English Sensor Module Features 1 – Rain Threshold Adjustment – Adjusts the rain sensor to accumulate 3mm, 6mm,12mm or 19mm of rainfall beforesignaling the receiver to hold watering. The factory defaultsetting 6mm. 2 – Sensor Test Spindle – Pressed to manually activate the sensor for setup and test...
Page 12 - Rain Sensor Site Selection; sprinklers to shut off.
10 Rain Sensor Site Selection Choosing the right installation site for the sensor module is key to obtaining the maximum benefitfrom your sensor system. For best results, choose a sensor installation site that provides: • Unobstructed exposure to rainfall–away from overhangs, tree branches, etc.• Pr...
Page 13 - Installing the Sensor Module; To install the sensor module on a rain
11 English Installing the Sensor Module 1. Adjust the sensor module to the preferred rainfall threshold activation point. The settings, provided in metric on one side of the cap and U.S. standard onthe other, include 3mm, 6mm, 12mm and 19mm. The factory setting is 6mmand is generally a good starting...
Page 14 - align vertically and tighten screw. See Figure 15.
12 3. To install the sensor on a length of thick-walled PVC pipe, remove and replace the Quick Clip bracket with the pipe-mount adapter. To provide friction between the components, ensure thestar washer is installed between the adapter and housing tab as shown in Figure 14. 4. Check the sensor modul...
Page 15 - CAUTION
Freeze Sensor (model TWRFS-I) Site Selection To ensure optimum freeze sensor operation, the sensor module installation site should meet thesite criteria of the rain sensor in addition to the following conditions:• Located in the coldest portion of the landscape.• Away from direct exposure to morning...
Page 19 - Signal Strength Display
17 English Signal Strength Display This feature displays sensor signal strength on a digital scale ranging from 0.0 to 10.2. 1. Press the Setup button as needed to display the antenna icon and the digital readout. The display will indicate the strength of the last receivedsignal. See Figure 22. Impo...
Page 20 - Dry Out Feature; Setup button to display the; Smart Bypass
Dry Out Feature The Dry Out feature is provided to override the Water Conservation baseline level, allowing thedry-out delay period to be set with more accuracy from 0.5 to 4.0 days in 0.5-day increments. Note: Before using the Dry Out feature, allow the sensor system to normalize by cycling through...
Page 23 - Sensor Module Battery Replacement
Sensor Module Battery Replacement 1. Unscrew and remove the bottom cap from the sensor housing. 2. Grasping the edges of the circuit board assembly, carefully slide the circuit board assembly out of the housing. 3. Remove the battery cover and batteries. 4. Insert two new 3V CR2032 (or equivalent) b...
Page 24 - Troubleshooting; Signal strength is weak or inconsistent.; • Move the antenna away from any large metal object.
Troubleshooting If you encounter problems at any point in the installation process, or the components do notfunction properly, try the Troubleshooting procedures first. If the problem is not listed or theremedy does not resolve the problem, contact your local Toro irrigation distributor for assistan...
Page 26 - Specifications
24 Specifications Models:TWRS-I (Wireless Rain Sensor-International) and TWRFS-I (Wireless Rain/FreezeSensor-International)Wireless Communication Range: Up to 152.4m LOS (line-of-site)Sensor Type: Industry-standard hygroscopic disc stack with adjustable rainfall sensitivitySensor Module Batteries: (...
Page 27 - The Toro Promise – Five-year Limited Warranty
The Toro Promise – Five-year Limited Warranty The Toro Company and its affiliate, Toro Warranty Company, pursuant to an agreement between them, jointly warrants, to the owner, each new piece of equipment (featured in the current catalog at date of installation) against defects in material andworkman...
Page 28 - Electromagnetic Compatibility
Electromagnetic Compatibility The TWRS-I and TWRFS-I wireless rain sensor series is CISPR 22 class B compliant. FCC ID: OF7TWRS IC: 3575A-TWRS Important: Changes or modifications to this unit, not expressly approved by the party responsible for compliance, could void the authority to operate the equ...
