The underfloor heating manifold is a module that distributes warm water to each underfloor heating zone, they are mainly wall mounted and they connect the underfloor heating pipework to the heat source, feeding water at the correct temperature from either the boiler (via a blending valve) or from the heat pump, directing it to each underfloor heating tube at the correct flow rate and temperature.
Depending on your heat source and the flow temperature that’s being supplied to it will determine if you require a pump blending manifold or standard manifold without a pump.