Dry return question

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mikejurasw

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Hi everyone, ...not sure if this is HVAC or plumbing (I'll post there as well), but: I have a two-pipe steam boiler furnace and would like to alter about 3 feet of the upper (dry) return in the basement. It runs right across a window and we'd like to go to glass block with a clear view, etc. Do any of you know whether the run needs to remain on one level before dropping back into the boiler, or can steam follow any contour I dish out?
Thanks!
Mike M.
 
Not a plumber so my advice may be worth what you're paying me for it.

I believe the return lines have water in them, not steam. To work properly since it is not under pressure it would need to have a downward slope the whole way to the boiler. It is more like a drain for condensate then the steam lines feeding the rads.
 
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