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Posted by Harold hydronicnetwork.net on January 07, 2004 at 14:30:31:
In Reply to: Re: hot water system posted by jason on January 07, 2004 at 13:53:10:
Nope, the high limit protects the boiler water from getting too hot, the low limit keeps the boiler warm enough, and the circulator switch keeps from pumping the hot water out of the boiler if the water is not hot enough and allows the circulator run if it is warm enough. Really old boilers used to need to be kept warm to prevent weeping water from the boiler push nipples between sections; newer boiler don't. You probably can pull the blue wire from the white block on the 8124 and wire nut and tape the end (while the power is off) which will stop the boiler from keeping up to temperature and make it a cold start. There is not much reason to keep a boiler hot all summer if it isn't heating your water.
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