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Re: Boiler Low Limit Question

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Posted by Gary on November 23, 2007 at 01:37:41:

In Reply to: Re: Boiler Low Limit Question posted by HeatPro on November 21, 2007 at 09:51:38:

First, thanks a lot for your help. Can't I wire the 60 low limit to just cut power to the pump when the boiler low temp is met? The cover on the low limit says R-W connection opens on temp decrease.

Thanks again!

: You state that you want the circ to run til the low limit is met, as an L8148A doesn't have one; you'd need a 60 to have one. It is also odd that the circulator runs for 15 seconds after the burner shuts off as an L8148A cuts them both off at the same time. A low limit would keep the boiler hot which is what you don't want. What you are looking for is a Peerless or System 2000 control to send the hot water out of the boiler to the radiation after firing or, as suggested, wire the circulator to run all the time.

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: First, thanks a lot for your help. Can't I wire the 60 low limit to just cut power to the pump when the boiler low temp is met? The cover on the low limit says R-W connection opens on temp decrease. : Thanks again! : : You state that you want the circ to run til the low limit is met, as an L8148A doesn't have one; you'd need a 60 to have one. It is also odd that the circulator runs for 15 seconds after the burner shuts off as an L8148A cuts them both off at the same time. A low limit would keep the boiler hot which is what you don't want. What you are looking for is a Peerless or System 2000 control to send the hot water out of the boiler to the radiation after firing or, as suggested, wire the circulator to run all the time.

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