Originally Posted by Jim34RL
What is a schematic? The schematic show's a tank, a pump, a holding tank ( hot water heater), accumulator and a valve. It will also show connections between each component. But the schematic will not show the line routing i.e. line drawing of piping/ tubing. In some industries this is not a requirement for manufacturing especially if PEX tubing is being used. I also think a schematic would be useless to most individuals as they would not understand the international symbol for most components that are used in a schematic drawing.
Do you have a wiring diagram and or a water line drawing for your main residents that you live in?
From a retired hydraulic engineer.
No, but my home was wired to codes (requires all connections to be in boxes, and these connections to be accessible, etc.) NFPA 1192 falls far short of a true code document. RVs, being relatively non-standard, are far more like a commercial building - and "as-built" drawings are very common in that environment.
My plumbing in the home did not include black/grey/fresh water tanks with concealed dump valves, level indicators, tank vents, tank overflows, flush devices, anti-siphons hidden in walls, behind medicine cabinets, under lavatories, etc. I knew generally what components were there, and about where the were located, because code specified what and where.
All you've got to do is see the number of RV owners with tank flush valve problems, dump valve problems, hidden coax splitters, circuits with wire nut connections which have fallen off.
As far as understanding symbols - google.
from a retired mechanical contractor.