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Posted by HeatPro on January 11, 2005 at 09:26:50:
In Reply to: Re: New Boiler Choice posted by jeffrey on January 10, 2005 at 18:05:32:
Gas combustion temperatures are lower, so chimney condensation occurs for water at the lower exhaust temperatures of 300 F. However, the sulphur content of oil condenses as sulphurous and sulphuric acid at higher temperatures, even below 550F, so that is still a concern. Follow the manufacturer's directions for the vent diameter and you will have less problems. Choose an installer that will follow the manufacturer's directions and not dismiss the liner size; you will be happier with the results.