In the past this was by far the most common setup as it only requires one valve. Gravity system y plan with no hot water off wire.
How Does An S Plan Heating System Work Boiler Boffin
Y plan valve wiring. Inparticular its position in a y plan system. We also cover the basics of installing or replaceing a three port valve or head. The basic difference between the y plan and the s plan is the type of valves used in the pipework. We also cover the basics of installing or replaceing a three port valve or head. View and download hive active heating installation manual online. Here is the usual wiring for a y plan system.
The video below covers the 3 port valve. 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. The valve itself has three plumbing connections in out a and out b. The s plan has two separate 2 port motorized valves one for central heating and one for domestic hot water. This video covers the 3 port valve. Blue white orange and grey.
This has one inlet and two outlets one for hot water the. 3 port valve operation. Electrical wiring for central heating systems. Interactive house central heating control valves. It can still be fitted today however is not suitable for systems with more than one heating zone. If you have a gravity fed or a y plan system 3port valve with no hot water off wire the green status light should be altered to be blue.
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 st9400 programmer. Y plan wiring diagram with hive. Part 3 in the series looks at y plan wiring a system which uses a single 3 port valve. A y plan heating system is a system that uses one motorised valve which has 3 ports for water to flow through. Can anyone please tell me how to connect up a switchmaster in a typical y plan system. Electrical wiring for central heating systems.
All of the example wiring diagrams ive seen for other valves have connections to the following four standard wires. In particular its position in a y plan system. This scheme uses a 3 port mid position valve. I have a switchmaster 3 port valve that has the following five wires. Blue white orange yellow and red. The y plan has one three port mid position valve supplying heating and hot water for domestic use as shown below.
Gallery of Y Plan Valve Wiring
