The manifold is the most important component of any wet underfloor heating system. The pipework from each area of your room converges here, and your hot water is fed from the heat source. Choosing the right underfloor heating manifold is key, and this is a choice that will affect you for many years to come. Installing the manifold can be trying, and if it isn’t installed correctly you will end up dealing with cracks and leaks, both of which will cause your entire system to underperform. Correctly choosing, installing, and maintaining a manifold underfloor heating system is important, so we have compiled this handy guide to help you through what you need to know.
Manifolds are a vital component of all hydronic underfloor heating systems. They are the connection point between the floor circuits (the underfloor heating pipework) and the heat source, and are the termination point for these circuits. Manifolds circulate heated water from the heating source throughout all of the underfloor circuits, and help to control flow-rates and pressure. If you are also using a mixing unit, the manifold will control the circuit temperature.
The manifold controls the flow of hot water throughout the entire underfloor heating system. This helps to maintain a comfortable and even temperature across your floor, and keeps your home warm and cosy. The manifold is the hub of your heating system, and acts as the central ‘brain’ that connects the supply and return lines.
Every manifold is comprised of a flow manifold, which indicates the flow rate of each loop, and a return manifold. Every loop is fitted with an open/close valve that is controlled by an actuator valve that is controlled by the main thermostat.
Manifolds can be coupled directly to the pumped heat source or used in conjunction with a pump or blender unit. Most manifolds are manufactured from pressed stainless steel, and they all undergo rigourous testing procedures before going on the market. This includes being tested to 6 bar of pressure (for consideration, the typical operating pressure is lower than 3 bar of pressure). While some manifolds include automatic air vents, the standard models come equipped with manual air vents (these can easily be upgraded to automatic).
These are some of the features that you want to look for in a manifold:
Underfloor heating manifolds are comprised of many different parts. These include:
Manifolds come in a range of prices and models, and the cost will depend on how many ports you require. Underfloor Heating Trade Supplies has everything that you need at very competitive prices. All of their underfloor heating manifolds have been fully approved by the Water Regulations Advisory Scheme (WRAS).
Prices will differ between suppliers, but our manifolds run from £95 (£114 inc. tax) to £265 (£318 inc. tax depending on the number of ports on the manifold. You can browse our manifold prices here.
The manifold is a vital component of any underfloor heating system, allowing you to maintain temperature and water flow. Choosing the right model will help your underfloor heating system perform to its highest capability, and last for a long time without issue.
Underfloor Heating Trade Supplies
Unit 10, Withyfold Trading Estate
Withyfold Drive, Macclesfield
01625 569 528
Monday - Friday: 8.30am - 5.00pm