Toro Wireless RainSensor 53770 - Receiver Power Wire Connection

Part 2 - Power Wire Connection
Note:
The Receiver requires 24 V ac to operate. It should only be connected to an
irrigation controller that uses a 24 V ac UL listed Class 2 transformer to supply power.
Caution: Do not connect the Receiver directly to 120/240 V ac power as
this may result in irreversible damage. If you are in doubt, contact a quali-
fied installer or electrician.
1.
Disconnect power to the controller.
2. Follow applicable wiring procedure A or B.
Terminals for 24 V ac power are present on the majority of controllers. Typical mark-
ings are “24 VAC”, “24 and 24”, “0 and 24” and “Hot Post and 24.” Verify correct volt-
age, then simply attach the two Red power wires to these terminals leaving existing
connections in place.
On controllers with no 24 V ac terminals, connect the two Red power wires to the
transformer’s secondary 24 V ac power wires where they attach to the controller’s
circuit board.
Note: This procedure will require a solder or wire-splice connection. If you are unsure
how to do this correctly, contact a qualified contractor or electrician for assistance.
6
SENSOR
COM
PUMP/
MV
24 VAC
21
34
COM
PUMP/
MV
21
34
Controllers with 24 V ac connection terminals.
Controllers with no 24 V ac connection terminals.
A
B
Irrigation System Controller
Irrigation System Controller
Red
Red
Red
Red
24 V ac UL listed Class 2 Transformer