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The Receiver requires a nominal voltage of 24V to power the unit.    

∗∗

Turn off / Disconnect Power to the Controller/timer before proceeding!

 

 

A.  Controllers 

WITH

 24V Terminals: (Fig. 3) 

24V terminals are present on the majority of controllers.  Simply 
attach the Red and Black Receiver wires to these two terminals 
(order does not matter). 
 

B.  Controllers with 

NO

 24V Terminals: (Fig. 6) 

On controllers that do not have 24V terminals, “piggy-back” the 
Red and Black wires to the controller’s 24VAC supply wires.  

 
 
 
 
 
 
 
 
 
 
 
 
 
C.  Using the Optional Transformer: (Fig. 7) 

In rare cases where a controller does not 
use 24V as its power supply, or access to 
it is not convenient, it is best to use an 
optional 24V Transformer to power the 
Receiver unit. Order R&D part # 
TRN120 from your distributor or R&D 
directly.  (Available at a nominal cost). 
 
 

 

I

NITIAL

 R

ECEIVER

 T

ESTING

:

 

Reconnect power to Controller.  Test the Receiver installation by lightly 
pressing & holding the Spindle at the top of the Transmitter unit - the 
“System Off - Rain” light should illuminate on the Receiver for the dura-
tion of the actuation.  (The Battery Low light will also briefly flicker 
when a valid transmission has been received.)  If the light does not illu-
minate, please recheck your wiring.   

Also make sure the Antennas are 

fully extended and straight. 

 

1 2 3 4

Valve

Terminals

To Valves

Common From Valves

White

Yellow

Wire Nut

Valve Controller / Timer

Pump / MV

Black

Red

C

24 VAC

“Piggy-back” connections

1 2 3 4

Valve

Terminals

To Valves

Common From Valves

White

Yellow

Wire Nut

Valve Controller / Timer

Pump / MVPump / MV

Black

Red

C

C

24 VAC

“Piggy-back” connections

Fig. 6 

Black

Red

24 VAC

Optional Transformer

Black

Red

24 VAC

Optional Transformer

Fig. 7 

Brown

 

Summary of Contents for Wireless Rain Sensor

Page 1: ...please have a qualified contractor perform the installation for you Installation should also be performed with adherence to local codes Additional information is available at www rainsensor com R D E...

Page 2: ...mitter at mounting location DETAILED INSTALLATION INSTRUCTIONS There are two main components the Transmitter and the Receiver The Transmitter is installed out doors where it is exposed to all rainfall...

Page 3: ...ires low voltage 1 2 3 4 Valve Terminals To Valves Common From Valves White Yellow Valve Controller Timer Pump MV 24 VAC 24 VAC Black Red S S C Use Green wire in place of Yellow if a normally open cir...

Page 4: ...r distributor or R D directly Available at a nominal cost INITIAL RECEIVER TESTING Reconnect power to Controller Test the Receiver installation by lightly pressing holding the Spindle at the top of th...

Page 5: ...ed on any suitable surface using the enclosed screws see Fig 10 The Transmitter may also be mounted to a PVC pipe using a 1 1 4 coupling or optional adapter Fig 11 NOTE The unit should be mounted in a...

Page 6: ...the Transmitter This is a diagnostic tool and does not indicate that the bat tery is low Battery Replacement To replace the batteries simply remove the Trans mitter from the bracket slide the bottom...

Page 7: ...optional components that may be purchased from your local supplier or from R D Engineering directly 1 Combination Rain Freeze sensor model part WRS1 F 2 120 24VAC Transformer part TRN120 3 240 24VAC T...

Page 8: ...Receiver Controls Status indicator built in Smart Bypass Switch Repairman Assist compatible low transmitter battery indicator Warranty 3 Years Limited contact R D for details Patents Pending Over 13 Y...

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