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Posted by stevo on March 09, 2004 at 09:46:23:
Our boiler will not shut off, even after putting a new thermostat. The boiler is a type D Weil-Mclain Gas boiler, one zone. I am thinking since when i put the thermostat well below room temperature and the burners do not shut off I am going to replace the high limit and circulator control, would this be the right idea?? My only other idea is that it could be something wrong with the gas valve, which hooks up to the thermostat. Thanks for all your help, I really appreciate it.
If its also any help, when i turned down the settings on the switch, or what they would call the high temperature circulator control, the one with the dials, (turned it down to like 120 from 140), the boiler shut off.
1) Boiler make- Weil Mclain PD series/ model (gas)
2) The air tank was replaced about a month ago
3) The problem started this weekend
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