Topic(s): Device HelpRC2 – ARC – ST8

How to Wire an RC2 Controller

Connect Valve Wiring

With the wire bay cover removed, route all field wires through the opening at the bottom of the controller.

⚠️ WARNING
DO NOT route valve wires through the same opening as power wires.

Connect one wire from each valve to one of the numbered zone terminals (1–8) on the controller.

NOTICE
DO NOT connect more than one valve to the same zone terminal (1–8).

Connect a field common wire to the common terminal (C) on the controller.

For connection of optional accessories (rain or rain/freeze sensor, master valve, pump start relay), refer to the appropriate section within this manual.

Connect Fixed Wiring

⚠️ WARNING
Ensure that AC power is disconnected before replacing wiring. The installation must prevent the connection to be strained. When using fixed wiring to main supply, the installation must incorporate a disconnecting device. DO NOT apply power until you have completed and checked all wiring connections. DO NOT attempt to link two or more controllers together using a single transformer.

1. FOR MODEL RC2-AUS: If desired, the provided power cord can be removed and replaced with custom wiring.
2. Remove the wire bay cover on the lower part of the controller.
3. Locate the transformer box in the left-hand corner of the wire bay and unscrew the wiring compartment cover.
4. FOR MODEL RC2-AUS: Unscrew the terminal block connecting the AC power cord and the transformer wires. Remove the power cord wires from the transformer box.
5. FOR MODEL RC2-AUS: Remove the factory installed power cord by loosening the liquid tight cord connector.
6. Route the three wires from an external power source into the wiring compartment.
7. Connect the external power supply wires using the terminal block and secure the liquid tight cord connector or a means of strain-relief of connections.

Power Wiring Connections 230 V∿
Brown supply wire (live) to the brown transformer wire. Blue supply wire (neutral) to the blue transformer wire.Green/yellow supply wire (ground) to green/yellow transformer wire.

Connect Power

The controller can be installed indoors or outdoors (if plugged above a weatherproof electrical outlet).

The controller has an internal transformer that reduces supply voltage from 230 V~ to 24 V~. You will need to connect power supply wires to the transformer’s three wires (live, neutral, ground). Refer to “Connect Fixed Wiring” section for installation details.

⚠️ WARNING
Electric shock can cause severe injury or death. Ensure power supply is turned OFF before connecting power wires. Do not plug in or apply power to the controller until you have completed and checked all wiring connections. Disconnect or turn off the external power source before connecting or disconnecting wires to the controller.