Note :     This accessory must be fitted by a competent person, and installation must comply with the guidance provided in the current IEE Wiring Regulations and current Building Regulations. Failure to comply with the requirements of these publications could lead to prosecution.

 

1. Remove the backplate from the receiver by loosening the two screws at the bottom, just enough to separate the backplate from the receiver.

2. Attach the backplate to the wall (keeping correct positioning of the plastic hinges) using the fixings supplied.

3. Connect the wires according to the appropriate wiring diagram.

Terminals A & B are used for OpenTherm connection only.

RT520 Series Boiler Plus Compliant Thermostat | 1.3.2. Wiring Diagrams Knowledge Base (salus-tech.com)

4. Locate the receiver onto the two plastic hinges at the top of the backplate.

5. Align the receiver housing with the two screws on the underside and then press lightly on the front to seat in place.

            

6. Tighten the two screws on the underside to secure.