Fill the heating system and vent any air out. Part 3 in the series looks at y plan wiring a system which uses a single 3 port valve.
Honeywell Underfloor Heating Wiring Diagram Best Wiring Diagram
Wiring diagram for y plan heating system. Operation hot water. Power starts at terminal 3 hw on in the. Showing flow from boiler to y plan or mid position diverter valve and then onto heating or hot water circuit. 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. Remove 3 port valve making a note of the wiring you should have a switched live from the room thermostat to the valve motor. 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.
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. A y plan heating system is a system that uses one motorised valve which has 3 ports for water to flow through. Y plan system schematic. This video covers the wiring and electrical operation of a y plan system. Work safely please note we. Interactive house central heating control valves.
Wiring diagrams and further information continues below. This allows the system to work on heating only. Electrical wiring for central heating systems. Here is the usual wiring for an s plan system. Here coloured wires indicate the permanent mains supply to the boiler and programmer. It can also be adapted for use with underfloor heating.
This has one inlet and two outlets one for hot water the. The water flows from the boiler through the bottom of the valve then the valve either sends the flow of water through port a to heating port b to hot water or through both ports in order to heat the radiators and hot water together. Also there will be a hot water off live fed through the cylinder thermostat. This diagram shows the wiring layout using the most typical components. Overview of a y plan heating system. System wiring diagrams.
Central heating wiring diagrams honeywell central heating wiring diagrams sundial y plan please note we do not accept any responsibility for the accuracy of any of the diagrams literature or manuals and information may have been supercededamendedwork must be completed by qualified electricians or heating engineers. Also there will be a neutral and earth. Interactive house gas boiler. Restore power to the system and test operation. Interactive house central heating controls thermostats. Unlke the y plan system operation of hot water and heating are totally separate and this layout can easily be extended to support additional heating zones simply by adding an extra valve and thermostat for each zone.
Gallery of Wiring Diagram For Y Plan Heating System
