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Introduction
In this guide, we'll demonstrate how to wire a 3-wire solenoid valve to a Walchem W100 controller. You will need a copy of the instruction manual, small flathead screwdrivers, and the solenoid valve with three wires: a ground wire and two signal wires (or power wires).
Follow the video tutorial or use the step-by-step instructions below. Click the timestamp next to any step to jump to that point in the video.
Wiring the Solenoid Valve
Step 1: Review the Wiring Diagram
Step 1: Review the Wiring Diagram
Refer to the controller's wiring diagram to locate the appropriate terminals. The ground wire will connect to TB3, and the other two wires will connect to TB4 and R1 (normally open side).
Step 2: Disconnect Power
Step 2: Disconnect Power
Before wiring the controller, ensure it is disconnected from power to prevent any electrical hazards.
Step 3: Remove the Protective Cover
Step 3: Remove the Protective Cover
Remove the protective cover from the W100 controller to access the terminal strips.
Step 4: Prepare the Solenoid Valve Wires
Step 4: Prepare the Solenoid Valve Wires
Ensure the ends of the solenoid valve wires are clean and free of frayed wires. Trim off any damaged sections to ensure good contact with the terminal strips.
Step 5: Connect the Solenoid Valve Wires
Step 5: Connect the Solenoid Valve Wires
Insert one of the red wires into R1 and the other red wire into TB4. Connect the ground wire to TB3. Use a small screwdriver to tighten the connections.
Step 6: Test the Wiring
Step 6: Test the Wiring
Close the protective cover, power up the controller, and test the solenoid valve wiring. Navigate to the relay settings and activate the solenoid valve manually to confirm proper operation.
✅ Congratulations! You have successfully wired a 3-wire solenoid valve to a Walchem W100 controller.
Still have Questions?
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