RT520 Series Boiler Plus Compliant Thermostat | 1.4.2 Start-up Configuration Procedure | Help Center
1.4.2 Start-up Configuration Procedure
RT520RF - Startup Configuration
RT520RF : Factory Reset & Start-up Configuration (1.4.1) . Buttons Used for Reset : Menu , Down Arrow and Tick . If your RT520 series thermostat is new out of the box, or you have ...