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What is an Underfloor Heating manifold and how does it work?

An underfloor heating manifold is an important part of a hydronic underfloor heating system. It helps control and distribute heated water throughout the floor to provide efficient and comfortable heating. Here’s a breakdown of its main components and how they work:

✅ Supply and Return Manifold: These are the main pipes connected to the heating system. The supply manifold brings heated water from the heat source (e.g., boiler) to the underfloor pipes, while the return manifold collects the cooled water and sends it back to the heat source for reheating.

✅ Flow Meters: These devices measure the flow rate of water passing through the manifold. They provide important information about water circulation and help in balancing the system for even heat distribution.

✅ Isolation Valves: These valves control the flow of water into individual zones or circuits of the underfloor heating system. By adjusting the isolation valves, you can regulate the temperature in specific areas of the floor.

✅ Temperature Gauges: These gauges display the temperature of the water entering and leaving the manifold. They help monitor and adjust the system to maintain the desired heating levels.

✅ Mixing Valve: In some systems, a mixing valve may be present on the return manifold. It helps control the water temperature returning from the floor and ensures it is not too hot.

✅ Air Vent: The air vent is used to release any trapped air within the system, as air pockets can hinder efficient water circulation and heating performance.

✅ Drain and Fill Valves: These valves allow for easy maintenance and initial filling of the system. They are used to drain or refill the water in the underfloor heating system.

By combining these components, the underfloor heating manifold enables precise control of water flow, temperature, and distribution to achieve effective and comfortable heating throughout the floor.

View our full range of Underfloor Heating Manifolds.

If you have any questions or are still a little bit unsure, please do not hesitate to contact our technical help team on 01600 710909 or email technical@underfloorparts.co.uk and they will be more than happy to advise the correct amount of pipe needed.