Posted by jtown on January 17, 2000 at 09:14:10:
In Reply to: Zoning of a single pipe steam system posted by Brookside P7H on January 16, 2000 at 18:56:01:
If you have high enough mains, they might not flood when you take the steam pressure off. Sometimes you see the mains drop down and back up before joining to keep steam from going from one to the other. You could put 1/2" bypasses OVER the zone valves to keep some pressure there, but if it is working manually, it probably will automatically. I can't imagine why you'd just shut off 1/2 the bldg except for summer use. I wouldn't try tempering bedrooms etc by zone valves. If it was mine and there is natural gas I'd look hard at other options.