Wiring Diagrams Central Heat. Install heat link 2. The valve moves to position b heating when power is applied.
Our wiring diagrams section details a selection of key wiring diagrams focused around typical sundial s and y plans. A list of boilers can be found on page 16. System boilers are slowly becoming more common.
Control wiring for combination boilers thermostats for combination boilers external programmers for combination boilers combination boiler with 2 heating zones 230v switching combination boiler with 2 heating zones volt free switching combination boiler with 2.
And you should select the most appropriate diagram that matches the components you have installed in your system along with what youre hoping to achieve in terms of controllability. The valve is in position a by default which is for hot water. Y plan wiring s plan schematic showing flow from boiler up to s plan valves or zone valves then onto heating and hot water circuit. Greenstar ri 27kw and 30kw wiring diagram.