The Glow-worm component is situated close to the water piping. There are two categories in which the water piping falls. The pipes that allow an input of water into the heating unit would be the first. This would apply to the wall-mounted water pipes and the main water supply.
Fits multiple appliances
Technical specification
Waist Sizeab17cb11gsTypeReducerSupplier Part NumberS204185Brand NameGlow-Worm