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Re: sizing boiler


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Posted by HeatPro on January 13, 2005 at 12:43:59:

In Reply to: Re: sizing boiler posted by Daniel on January 13, 2005 at 12:21:21:

Of course people have heard of this for half a century. Don't be concerned with it in a residence with a residential boiler. You don't have to limit the number of rads, excepting, limit the amount to rads inside the house as rads outside are unnecessary. A common way to mix the waters is to use a primary loop for the radiators with its own circulator, and tie the boiler into the loop with close tees and its own circulator. You are complicating a simple matter to make a little house system like a mile-square building.

If you keep the system unzoned and gravity feed, all the water flows all the time and mixes so there is no cold water coming back. If you zone several areas, then the water will mix in the boiler as zones open and close. Not all zones will be closed until they all get cold, so this is not a concern.




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