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ADVERTISEMENT FEATURE A complete guide to underfloor heating


This forms the basis for designing the underfloor heating system including pipe spacing, circuit layout, and circuit lengths. Essential data for the system’s operation, such as pressure losses, water volumes, and control settings can also be taken from the system design. Bear in mind, the more accurate and precise the data input, the more accurate and efficient the system will be.


The essential role of underfloor heating manifolds & flow meters


The manifolds and flow meters are crucial in regulating water distribution and flow rates, ensuring balanced, efficient performance” continues Julian. Only if the system is balanced correctly does each heating circuit receive exactly the right amount of water it needs to cover the heat load. Additionally, a balanced system ensures fast and even heating as well as greater control accuracy, which in turn leads to better control quality and lower energy consumption.


Julian Clegg, Myson’s UK technical manager for underfloor heating, talks through planning the optimal underfloor heating system


A


well-designed underfloor heating system can contribute significantly to the creation of sustainable indoor climate comfort, provided


it’s carefully designed, planned and installed.


New v existing buildings There’s a key difference between underfloor heating calculations for new builds and existing properties. For older buildings, an estimate based on construction year is often sufficient. But for new builds, detailed calculations are required to comply with current regulations and NHBC/CIBSE guidelines. Accurate design is essential. Without proper


design, planning and balancing, underfloor systems can easily overheat or underheat spaces, affecting comfort and energy efficiency.


Essential design requirements


To ensure a properly planned and efficient underfloor heating system, the following key elements are required during the design and calculation phase: ¡ Heat load calculation (in accordance with DIN EN 12831): This must be tailored to the specific building and requires a detailed floor plan, including cross- sections, U-values, floor construction details, and the dimensions and types of windows and doors. ¡ Specification of the heat generator: The type of heat source to be used influences the system temperatures, which in turn affects the design parameters of the underfloor heating system.


Which fixing system is right for the building?


Fixing systems are available to cover almost every application, and it is important to define the requirements for the underfloor heating system at the earliest possible stage. Factors to consider are: ¡ What is the available installation height? ¡ What screed will be laid? ¡ What heating capacity (and therefore amount of water) is required? ¡ What type of pipe is required? ¡ How quickly should the system react? ¡ What is the desired room temperature? ¡ What floor covering will subsequently be installed?


Using these values and specifications, the building’s heat load can be accurately determined.


Combining underfloor heating and radiators


Hybrid heating systems are becoming increasingly popular in both new builds and renovation projects. We believe a combined system provides a


more complete and flexible solution. While some areas may suit one system over the other, modern innovations now allow both to be used throughout a building, creating an energy-efficient setup tailored to each individual space.


Key advantages:


¡ Zoned control: Underfloor heating allows easy zoning via separate circuits and installation distances. Radiators can be placed flexibly, enabling users to set room temperatures based on individual needs, improving comfort and energy efficiency. ¡ Comfort: Bathrooms, for example, benefit from both systems. Underfloor heating keeps floors warm and dries them quickly, while a radiator provides an extra heat boost when needed. ¡ Energy efficiency: Combining underfloor heating with low-temperature radiators and a heat pump or condensing boiler enhances energy efficiency. ¡ Design flexibility: Ideal for renovations, this hybrid setup allows radiators in hard-to-retrofit spaces and underfloor heating in open plan or bathroom areas, fully adapting the layout to lifestyle. Myson is one of the few manufacturers to offer both underfloor heating and radiators. Our systems and solutions experts have years of experience in designing heating plans and we offer a complete design service, tailored to individual needs, which includes mixed system layouts. For more information contact Myson on 0330 041 5474, or visit www.myson.co.uk/products


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