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Posted by Ken on September 10, 2004 at 15:20:52:
In Reply to: Re: Modulated output for multiple heating types posted by HeatPro on September 08, 2004 at 15:00:34:
You need a mixing valve for the slab zone as not to exceed 120 deg. You could also reset boiler temp based on outside air temp. IE 20=180 where 50=130 or whats your requirement based on design temp for your area. Ken
it probably requires a higher temperature than some.
: *** You can see than, that this might or might not apply. Therefore, my statement here still applies to this situation:
: : : Modulated output is not needed, but a control arrangement to reduce the water temperature for the radiant portion could be necessary, if that is the kind of radiant installation that uses lower temperatures. As you did not say, and might not know what temperature is required for the radiant, a definite statement can not be provided.
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