Toro 53770 User Manual

Introduction

The Toro Wireless RainSensor connects to your irrigation system controller/timer to
suspend automatic watering operation in the event of rain. Designed for ease of
installation, your sensor-controlled irrigation system will be up and running in minutes.

Before attempting the installation, please read through these instructions in their
entirety, and refer the installation instructions for your irrigation system controller/timer
in regards to connecting a rain sensor or rain switch. The Wireless RainSensor is
designed to work with either Normally Open or Normally Closed sensor circuits.

Important: Please note the following information regarding installation and use

of the Wireless RainSensor components:

•

The RainSensor Receiver is designed to operate with 24 V ac power only.
Connecting the Receiver wiring to 120/240 V ac power may result in severe
equipment damage.

•

Installation methods must comply with all applicable national and local building
codes. If you are unsure about proper wiring practices, have a qualified contrac­tor perform the installation for you.

•

The Receiver cover should always be used when the Receiver is installed out­doors.

•

The Sensor/Transmitter should never

be submerged in water or installed inside a

rain gutter.

Contents Page

Component Overview . . . . . . . . . . . . . . . .2

Quick Start Installation Instructions . . . . . .3

Detailed Installation Instructions . . . . . . . .4

• Mounting the Receiver . . . . . . . . . . . . .4

• Receiver Control Wire Connection . . .4-5

• Receiver Power Wire Connection . . . . .6

• Initial Receiver Testing . . . . . . . . . . . . .7

• Rainfall Adjustment . . . . . . . . . . . . . . .7

• Sensor/Transmitter Installation . . . . . .7

• Testing Signal Strength . . . . . . . . . . . .7

• Testing Control System Operation . . . .7

• Installing the Sensor/Transmitter . . . . .8

Wireless RainSensor Operation . . . . . . . .9

• Normal Operation . . . . . . . . . . . . . . . . .9

• Smart Bypass . . . . . . . . . . . . . . . . . . .9

• Power Down . . . . . . . . . . . . . . . . . . . .9

• Receiver Learn Mode . . . . . . . . . . . . . .9

• Attention Required . . . . . . . . . . . . . . . .9

Battery Replacement . . . . . . . . . . . . . . .10

Changing Sensor/Transmitter Code . . . .10

Troubleshooting . . . . . . . . . . . . . . . . .10-11

Electromagnetic Compatibility . . . . . . . . .11

Specifications . . . . . . . . . . . . . . . . . . . . .12

Warranty . . . . . . . . . . . . . . . . . . . . . . . .12

Receiver

Sensor/Transmitter

Wireless RainSensor

™

Model 53770

User’s Guide

Component Overview

Receiver (Figure 1)

1 - Weather-resistant Cover:

Slides upward to remove. Protects
the Receiver module when located
outdoors. Keep the cover installed
at all times other than when manu­ally operating the Receiver.

2 - Antenna wire:

Straighten the antenna wire verti­cally for the best reception.

3 - Sensor Status Indicator:

Steady light

- Sensor is active.

Blinking light - The RainSensor
Receiver has been bypassed for one
rain cycle (Smart Bypass button
pressed).

4 - Signal Indicator: Indicates the

quality of last received signal.

Steady light - good signal.

Blinking light - fair signal.

No light - poor signal (relocate the

Sensor/Transmitter).

5 - Smart BypassTMButton:

Press to temporarily override the
sensor when active. Sensor opera­tion will reset automatically. To man­ually exit the bypass mode, press
button again.

6 - Power Indicator:

Steady light

- 24 V ac power is

connected.

Blinking light - Sensor/Transmitter
battery power low, or other commu­nication problem.

No light - Unit is off or is discon­nected from 24 V ac.

7 - Multi-wire Cable - 20" color-coded wires provided for controller connections.

Sensor/Transmitter (Figure 2)
1-

Test Spindle - Press down and hold to manually test Sensor/Transmitter operation.

2- Rainfall Adjustment Cap - Adjusts the Sensor/Transmitter to signal the Receiver

when the accumulated rainfall reaches 1/8", 1/4", 1/2", 3/4" or 1".

3- Universal Mounting Bracket with Quick-ClipTM- Simplifies installation on rain gutter,

side of roof, shed, fence, etc. Enables the Sensor/Transmitter to be mounted on an
angled surface then easily adjusted to the vertical position.

4- Antenna Wire - Straighten downward for maximum range.

2

1

3

4

5

6

7

2

1

2

3

4

Figure 1

Figure 2

Quick Start Installation Instructions

The following instructions are provided for the experienced installer. If you are
installing a Toro Wireless Rainsensor for the first time, use the Detailed Installation
Instructions starting on page 4.

1. Disconnect power to the irrigation system controller.

2. Always mount the Receiver FIRST, adjacent to the controller with either the provided

stainless steel screws or double-sided foam tape.

3. Refer to Figure 3. Attach White and Brown (or Yellow*) control wires to the con-

troller’s Sensor terminals in any order OR, to break the valve common:

a. Disconnect valve common wire and common pump/master valve wire (if present).
b. Attach White wire to common wire(s) with a wire connector.
c. Attach Brown wire to common terminal on controller (Yellow wire is not used in

this connection).

4. Connect the Red wires to the controller’s 24 V ac power source terminals.

5. Straighten the Receiver antenna wire upward and the Sensor/Transmitter antenna

wire downward.

6. While holding the Sensor/Transmitter at close range to the Receiver, press and

hold the Test Spindle to test the wiring. The Power, Signal and Sensor Status indi­cators should be ON.

7. Adjust the Rainfall Adjustment Cap to the desired rainfall activation amount.

8. Mount the Sensor/Transmitter in an unobstructed location away from sprinklers.

See

Figures 4 and 5.

Important: Reconfirm proper operation of the Wireless RainSensor at the

final mounting location.

3

Red

To 24 V ac

To 24 V ac

To Sensor Terminal or to Break Valve Common

To Sensor Terminal (Normally Closed)
or to Break Valve Common

To Sensor Terminal (Normally Open)

(For Normally Open sensor, see Detailed Instructions)

Red

White

Brown

Yellow*

Figure 3

Extend Antenna
straight down

Rain gutter (cross section view)

Do not over-tighten
thumbscrew

Press and hold
down to test

Figure 4

Extended Antenna
straight down

Stainless
Steel
Screws

Figure 5

Detailed Installation Instructions

There are two main components of the Wireless RainSensor: the Receiver and
the Sensor/Transmitter. The Receiver is installed adjacent to the irrigation system
controller. The Sensor/Transmitter is installed outdoors where it is exposed to
unobstructed rainfall.

Mounting the Receiver

1. Mount the Receiver FIRST, adjacent to the controller with either the provided stain-

less steel screws or double-sided foam tape. The connection wire cable is 20"
long, so before attaching the Receiver, make sure the wires will easily reach the
controller’s connection terminals.

Wiring the Receiver

There are two parts involved in wiring the Receiver:
Part 1: Attach the Receiver control wires.

Part 2: Attach the low-voltage power wires to supply 24 V ac to the Receiver.

Part 1 - Control Wire Connection

The Receiver control wires are used to interrupt the common wire of the valves or they
can be connected directly to the sensor input terminals of the controller (if provided).

1. Disconnect power to the controller.

2. Follow applicable wiring procedure A or B or C.
Note: The following diagrams are representations only and do not depict actual con-

troller layouts. Refer to the installation instructions provided with your controller for
specific wire connection information.

Locate the controller sensor terminals (generally marked “SENSOR”, “SEN” or “S”)
and directly connect the White and Brown* wires to these terminals in any order.
There may be a jumper wire or tab connecting the terminals that must be removed
and/or a sensor control or bypass switch that must be activated.

4

Brown

*

Common Wire From Valves

To Valves

Irrigation System Controller

White

Yellow*

*

Note: Use the Yellow wire in place of the Brown wire if the controller requires a

Normally Open sensor. For example, the Toro ECx

TM

and GreenKeeper®controllers.

Controllers with sensor inputs , with or without pump start /master valve:

A

PUMP/

34

21

MV

COM

SENSOR

24 VAC