Thanks a lot. I have soot problem as well hight pitch sound issue.

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Originally posted by Tommy:
"In 1992, I replaced the electric forced air system with an oil furnace vented through the sidewall. I immediately began to have sooting problems. The conversion was made by Taylor Plumbing of Modina, NY and included a Weil McLain system with a Beckett burner and an SWG Sidewall Power Venter.
The furnace was located in his garage. Local codes required that it be enclosed, so a "furnace room" was built within the garage. Sooting problems began almost immediately. "I keep a classic sports car in the garage and from day one, I've had to keep it covered because of black soot that came out of the furnace room. In the past seven years my contractor has been here at least a dozen times measuring, adjusting, changing nozzles all to no avail." The contractor concluded it was a combustion air problem and decided the only solution was to cut another hole in the wall to allow the infiltration of fresh combustion air. Tony didn't like that idea, so he called the manufacturer of the power venter, Field Controls, for other options.
His problem caught the attention of Frank Kata, Field's Product Manager. "Actually, Tony had two problems," says Kata. "First, his system was starved for fresh air, causing inefficient oil burning and soot buildup in his combustion chamber. Second, because his home is so tight, negative pressure built up inside the building during vent cycles. The pressure was so great that when the furnace shut off, air was pulled back in through the power venter to equalize the pressure. This air flow caused the soot in the combustion chamber to blow back into his furnace room and garage. It was quite a mess." Kata recommended the Field Combustion Air Tee (CAT) and sent a CAT and a CAS-2 Combustion Air Kit to Tony's contractor with installation instructions.
"The unique triple-pipe configuration of the Combustion Air Tee is the innovation that makes this solution possible without a second hole in the wall," according to Kata. "The CAT carries exhaust air out through the Power Venter while simultaneously bringing fresh combustion air in all through the same hole." The CAT connects directly to the SWG Power Venter. A second length of galvanized piping is added to connect the CAT to the furnace burner via the Field AirBoot®. The AirBoot is calibrated to provide the correct amount of air for the burner. A VRV (Vacuum Relief Valve) acts as a safety valve in case the fresh air intake is blocked.
"It's been installed since late September, with no signs of soot," says Prizzia. "I'm impressed." I found this on the web, and this is where i found it.. http://www.fieldcontrols.com/rpt.swg.html They have done the research for us and give you the answer. I hope this will help you with your problem.

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[This message has been edited by vutien (edited July 01, 2008).]

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