Installation - SLRPNK

What are those equipments?
They look like a gas furnace and a hot water tank. My first thought was "Why are they connected? ", because I thought the tank had its own heating element. My second thought was “Aren’t those water lines? How does a water line become incandescent?”
Maybe when it contains superheated steam?

Some part of me believes that water cannot get so hot that it would cause metal to Glow.

I would be happy to be proven wrong.

I mean, unless you're saying that the pipe is heating the water inside of it? Which at that temperature that water would be expanding to over a thousand times its size and would probably blow that line to smithereens.

Steam has no limit to how hot it can get. Until it eventually transitions into plasma of course. By then the oxygen and hydrogen would have separated, I imagine. Then it’s no longer water.

Superheated steam was a problem in some steam locomotives, as running the water level too low would allow the boiler to reach temperatures that would compromise the integrity of the metal.

Only liquid water has the boiling point as a “limit”.

https://physics.stackexchange.com/questions/715701/how-hot-can-steam-be

Apparently 3,000 C might be the limit, but idk.

I don't trust it entirely because it is a stack exchange website, there's not any hard evidence to back up the claim.

How hot can steam be?

The title really says it all. How hot can steam (gaseous form of water) be before it ceases to be steam. I'm assuming that at some point the molecular bonds will give way, though I might of course be

Physics Stack Exchange
Yeah, don’t know the specifics, but at some point the thermal energy will start knocking the molecules down into atoms.