Potterton Powermax Filling Loop water pipework is classified into two types. The first would be the pipes that allow water to be fed into the heating unit. This would include the mains water supply and the water pipework on the wall jig. The second category would be the pipework within the appliance that carries water and between the various elements of the unit that require it such as the diverter valve and heat exchanger.

Brand Name	Potterton