The manifolds come complete with a drain and air vent assembly, which can be positioned on either end of the manifold. Isolation valves are supplied separately for the supply end of each manifold.
The bottom manifold is the flow and the top manifold is the return. Each manifold port comes complete with a Polymax push fit connection. Pipes are connected to manifolds by inserting a pipe stiffener (UFHPS15) into the pipe and simply push fitting the pipe into the port.
The flow meter on each flow port of the manifold provides a visual indication of the flow through each circuit. Manual balancing can be undertaken by using the blue cap on the return manifold for manual adjustment, or removing the blue cap completely.