Glowworm Pipe Assembly (Page 13)
The water pipework can be separated in to 2 categories. The first would be the pipes that allow an influx of water in to the heating unit. This would include the mains water supply and the water pipework on the wall jig. The second category would be the pipes inside the appliance that carry water to, from and between the numerous devices of the unit that require it, such as the diverter valve and heat exchanger.