Posted by Jim on October 25, 2001 at 08:40:09:
In Reply to: Re: sulfer buildup in stack posted by Tony Conner on October 23, 2001 at 12:42:21:
: The deposit is likely sulphur from the fuel. That doesn't necessarily mean you're being supplied the wrong grade. I'd suspect flue gas temps after the economizer that are in the condensing range.
: Check the flue gas temp after the economizer to see if it's too low. Does the water side of the economizer have a 3 way valve to recirc some water to maintain a minimum flue gas temp?
There is no recirc valve in the water side of the ecomomizer. The unit is 100% make up.
What is the minum stack temp I should keep?
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