Based on your description, could it be a cooling coil? Perhaps it is
designed to be connected to a water-source air conditioning system. The 2"
size does seem perplexing as these seem rather large for the pipes inside
the coil, although it may be appropriate for a header if a number of
smaller pipes are connected to it. Another possibility is that it would be
connected to a cold water system and provide cooling that way, while
wasting one huge amount of water.
| I recovered an old hot air furnace after it had been removed in a
| renovation project. I didn't see how it was originally set up. Above
| the firebox is a barrel sot of think, occupying about 2/3 of the area,
| laying horizontally. It has 2 pipes or tubes coming out of it, each
| about 2" in diameter. They don't look like they have ever been plumbed
| into anything, and all is clean as you look down inside them. We were
| going to fit a plenum chamber of the area and forget it, but when the
| blower is run, very high speed air comes out of them, and when the
| burner is on, the air is slightly warm. What am I looking at?
| Thanks, Dave W.