S plan wiring centre s plan wiring centre 2b typical wiring scheme for multi zone ufh with a combination boiler 3b typical wiring scheme for single zone ufh with a combination boiler this drawing is for guidance only. The reason this system is called a s plan heating system is because of the shape of the system when drawn schematically.
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Wiring diagram for s plan heating system. This video covers s plan heating systems and 2 port valves. All installations should be undertaken by a qualified person only. Overview of an s plan heating system. This diagram shows the wiring layout using the most typical components. 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. System wiring diagrams.
The s plan is popular because it is versatile you can add an unlimited number of zones simple to wire and easy to fault find on. This includes their plumbing their wiring how they are controlled with time clock programmers and thermostats. Showing flow from boiler to y plan or mid position diverter valve and then onto heating or hot water circuit. Wiring diagrams and further information continues below. 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. Remove 3 port valve making a note of the wiring you should have a switched live from the room thermostat to the valve motor.
Y plan system schematic. This allows the system to work on heating only. This drawing is for guidance only. For more information. Heating controls wiring guide issue 17 v4073a y plan how a mid position valve operates within a y plan heating system how a w plan heating system operates faq pump overrun wiring diagrams for s plan incorporating a st9400 programmer faq pump overrun wiring diagrams for s plan plus incorporating separate diagrams with st9100 time switch and. Overview of a y plan heating system.
S plan schematic. Y plan wiring. Also there will be a hot water off live fed through the cylinder thermostat. 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. Here coloured wires indicate the permanent mains supply to the boiler and programmer. Showing flow from boiler up to s plan valves or zone valves then onto heating and hot water circuit.
The diagram set includes wiring plans for a number of popular configurations of central heating systems c plan w plan y plan s plan s plan etc. This video covers the wiring and electrical operation of an s plan system with two 2 port valves. Also there will be a neutral and earth.
Gallery of Wiring Diagram For S Plan Heating System
