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two one pipe staeam systems alongside each other?
I'm trying to zone a one pipe steam system, making the upper levels and lower levels of my house 2 separate zone's, by installing a 2nd one pipe system near (-along side-) all the original "one pipe system" and using the new pipes to heat up the lower level radiators and keeping the older pipes as they are for the upper levels.
now i was told that this is not done: "you cannot put 2 separate steam systems in one house along side each other" but he did not explain why?? so I'm wondering if this is true? or is this guy just not willing to do a steam system but rather hot water system?
which in my case a hot water system will probably be much more costly and surly more damage to my ceiling's and some other inconveniences.
any input on this would be very helpful