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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.
http://www.heatpro.us/service/oilserv.htm
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.
http://www.heatpro.us/service/dissatis.htm