What is an S PLAN heating system?
A typical S Plan Heating System has two separate motorised valves which control the temperature of the central heating and the hot water individually. It also has a cylinder thermostat, a room thermostat, and a programmer. You will often find that an S Plan Heating System is used in modern properties.
What is an S plan?
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).
What’s the difference between S and Y plan heating systems?
By way of a reminder, a Y plan uses a mid-position valve to direct the primary flow through the heating circuit, hot water circuit, or both, while the S plan utilises at least two separate zone valves for both the heating and hot water functions. The style of system design chosen can be influenced by many factors.
What is s plan wiring?
This scheme uses separate two-port valves, one for hot water and another for heating. It can be easily extended to include additional heating zones by adding an extra valve and room thermostat for each zone – this is typically called S Plan Plus.
Why is it called s plan?
The reason this system is called a ‘S’ plan heating system is because of the shape of the system when drawn schematically. 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.
How does Y plan work?
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. Y-Plan heating systems were widely used in older heating systems.
How does Y plan heating work?
Do you need a bypass on Y plan?
nope, leave it alone… The valve may remain at either HW or CH postion after time cycle…
Does ay plan need a bypass?
How does a Y plan heating system work?
What is s Plan Plus?
Sundial S Plan Plus. The Sundial S Plan Plus satisfies the minimum requirements of Building Regulations Part L1 for dwellings over 150m². The system provides independent time and temperature control of multiple heating circuits and a separate hot water circuit in fully pumped systems.