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Thanks!

My question is: can a delta t ecm circulator be installed with a mod-con boiler and won't affect its modulation?

Hi, I currently have a Bosch gb142 /30 (input 106,000, turn down ratio 5:1), which was installed in 2009. Its combustion chamber started a leak and was replaced under warranty in 2019. A lot of other parts also have been replaced. Right now only the control panel and the fan are original. I...