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Posted by HeatPro on June 09, 2006 at 12:45:06:
In Reply to: controls hot water boiler posted by joe on June 09, 2006 at 11:52:07:
: two questions:
: 1. can you use both thermostats and outdoor reset to control the boiler. For example if outside temp greater than 55 degrees during day, provide no power to boiler. If outside temp less than 55 degrees provide power to boiler. If thermostats call for heat and temp above 55: no power to boiler. if thermostats call for heat and temp below 55, then boiler provides heat.
++ that is the way an lelectronic outdoor reset works, albeit at 65F instead of 55F.
: 2. For a condensing boiler with a primary boiler loop and a secondary heating loop, is a bypass necessary between the supply and return lines of the secondary loop?
++ a primary is a bypass on the secondary loop AND the boiler, so another is not required.
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