RT520 Series Boiler Plus Compliant Thermostat | 1.3.2. Wiring Diagrams | Help Center
1.3.2. Wiring Diagrams
RT520 - Hard Wired Thermostat Diagrams
RT520 : Wiring Diagrams ( 1.3.2.1 ) . Boiler Connection Pump / Valve Connection KL08NSB Underfloor Heating Wiring Centre Connection ______________________________
RT520RF - Wireless Thermostat Diagrams
RT520RF : Wiring Diagrams (1.3.2.2) . TPI, SPAN. OpenTherm. _______________________