RT520 Series Boiler Plus Compliant Thermostat | 5. Features And Functions | Hilfecenter
5.3. Manual Mode
5.1. Low Battery Warning & Changing Batteries
5.2. Setting Time & Date
5.4. Changing the Language
5.6. Automatic Schedule Mode
5.8. OpenTherm Settings
5.9. Temporary Override
5.10. Temperature Offset
5.5. Holiday Mode
5.7. Boost Mode
5.13. Heating & Cooling Modes
5.15. Span & TPI Control Algorithms
5.12. Landlord Settings
5.11. Temperature Display Increments
5.14. Optimum Start & Stop
5.16. Factory Reset