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Posted by Justin on November 16, 2005 at 14:32:14:
I have a Weil-Mclain boiler for hot water heat that is roughly 10-15 years old. The system is broken into two zones upstairs/downstairs and each zone has it's own circulator. As it sits right now the boiler is using an indoor/outdoor reset control to maintain the proper water temperatures and each circulator is controlled by a thermostat on the corresponding floor. Where I'm running into waste is on not so cold days. When the temperature in the house reaches what the thermostat is set for the circulators shut off however the boiler will still continue to heat the water and even worse since the water is not moving the reset controller never sees the heated water to issue the shut down. What I end up with is the boiler hitting it's max setting before it will shut down which is killing my gas bill. (my most expensive bill last year was for April)
Whew! That was long on to my questions.
1. Would I be better off ditching the thermostats and running the circulators continuously and just opening windows if it gets too hot? or Should I wire in a relay and force one of the circulators to turn on anytime the boiler fires up?
Thanks for taking the time to read this I know it's kind of long but and advise is greatly appreciated.
-Justin