Always switch off the mains before removing the Wiser HubR – and never fit it to a live wall-plate!
Make the wiring connections, as shown in the connection charts, for the appropriate system.
For surface wiring, snap out the cable entry strip on the bottom edge of the wall-plate. The Wiser HubR is double-insulated and needs no earth connection, butan earthing continuity (loop) terminal is provided for convenience.
Note: If there is an existing wired thermostat, it must be completely disconnected, i.e. remove the thermostat wires from the wiring centre - a link must be inserted between the terminals where the thermostat common and call for heat wires are located in the wiring centre.
Numbers with arrows relate to the junction box. * Consult boiler handbook for details of pump overrun wiring. After wiring, clip on the unit and tighten the securing screws. Check the mains input has a 3A fuse, and switch on the mains.