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    What is the function of a boiler manifold in heating systems?

    Boilers play an integral role in domestic and commercial heating systems. However, the effectiveness of a boiler can be impacted by any number of different boiler parts if they fail to work properly. The bottom line is that this can leave your property without efficient heating, so it pays to know which parts of the system are the highest priority for repair. This post is designed to provide an in-depth understanding of how the boiler manifold contributes to the overall functionality of a domestic heating system.

     

    What is a manifold?

    The manifold is a boiler and central heating part that controls the flow of water into and out of the boiler. This is why there are always two manifolds, a flow manifold and a return manifold. These parts can also regulate the temperature of the water that travels to heat pipes and radiators. The manifold can usually be found in a central location to aid in its role of controlling how water passes between boilers and the rest of the heating system. A common example is a metal cabinet inside an airing cupboard.

    Every type of boiler will have return and flow manifold parts with slight differences. For instance, the Worcester return unit manifold comes with a range of washer sizes. National Boiler Spares stocks refurbished and replacement spares to fix far more than just a Worcester boiler though.

    Manifold components

    • Flow sight gauges – gives a visual indication of the flow rate by providing measurements at each of the flow arms. Output can be set by heat loss and heat generated through outlets.
    • Air valves and drainage valves – these valves are important to remove air from the system at each of the flow and return manifold arms.
    • Thermometer gauge – connected directly to the manifold for accurate temperature measurement.

    If a manifold is used to supply heat to an under floor heating (UFH) system, it will then contain the following additional components:

    • UFH mixing unit
    • UFH actuator
    • UFH wiring centre
    • UFH isolation valves

    Function of manifolds in heating systems

    The manifold is a boiler part that performs a vital function in helping transport hot and cold water to and from various areas in the central heating system. A type 1 manifold such as this is responsible for connecting the boiler (the heat source) to various water-carrying pipes.

    Manifolds also see lots of use in properties with underfloor heating features. This is because type 2 and 3 heating manifolds have electrothermic heads to transfer heat across the floor surface efficiently.

     

    Order replacement boiler manifolds online

    National Boiler Spares provide rapid support for homeowners by supplying gas safe engineers with quality boiler parts and spares. We keep a range of boiler manifolds in stock, as well as other key heating spares such as heat exchangers and gas valves. If you have any questions, check our delivery information or get in touch with us directly.