Electrical wiring for central heating systems. Its just a guideline on how the average boiler is wired.
2 Zone Wiring Diagram With Underfloor Heating C3 Wiring Diagram
S plan boiler wiring. C plan schematic. Gravity hot water controlled by a 6 wire valve not your standard 5 wire valve and a pumped central heating circuit controlled by a thermostat. The reason this system is called a s plan heating system is because of the shape of the system when drawn schematically. C plan wiring. W plan schematic. This diagram shows the wiring layout using the most typical components.
Part 2 in the series looks at s plan wiring a system which uses two separate valves. S plan schematic. It can be adapted how you need it. Heated water from the boiler is diverted to the hot water coil or the radiators depending on which service the programmer is asking for and which thermostat is calling for heat. The s plan is popular because it is versatile you can add an unlimited number of zones simple. S plan wiring.
This video covers the wiring and electrical operation of an s plan system with two 2 port valves. The diagram can be used as a boiler with a pump overrun as well you just take the pump live neutral earth from the wiring center and run it to the boiler terminals. Overview of an s plan heating system. Wiring diagrams and further information continues below. Here coloured wires indicate the permanent mains supply to the boiler and programmer. One valve for hot water another for heating.
An s plan heating system is a system that uses zone valves also known as 2 ports s plan heating systems are now the most common type of system installed in the uk after combination boiler systems which do not have any external motorised valves. Showing flow from boiler up to s plan valves or zone valves then onto heating and hot water circuit.
Gallery of S Plan Boiler Wiring
