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Posted by HeatPro on April 08, 2008 at 11:36:57:
In Reply to: HB Smith Boiler posted by Chris on April 08, 2008 at 08:51:28:
The 'setting up' would include using a combustion test kit to adjust the air and oil so you get a clean burn.
The reason for the soot was that the settings changed for the worse, as is usual over time as parts wear. Unfortunately, most, if not many, technicians don't have a combustion test kit with them when they do service, which is plain foolishness as your heater could need to be cleaned again in a few weeks due to not being 'set up.'
It is difficult to know if you do need a draft regulator after 7 years, but most installations do use them as it is recommended in the installation instructions. The price is what it is.
A natural gas model without service and combustion testing is in the same circumstances. There are no machines that stay the same forever without service adjustment.
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