If the boiler is supplied with a Large Pipe, the water does dissipate after 57 tiles. If supplied with a Small Pipe, it dissipate after 46 tiles.
Pipes can not be built through a Perimeter Wall (or Water), and building a Perimeter Wall over any existing pipe will remove it. However, the hot water pipe can cross or follow Large Pipes and Small Pipes.
This Article would benefit from the addition of one or more images.
Please help contribute by uploading relevant images, and adding them to this Article.