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Posted by Harold hydronicnetwork.net on July 06, 2002 at 09:04:36:
In Reply to: Re: Purge posted by JC on July 06, 2002 at 05:13:41:
Ah, yes the challenge of using the right words for the right part. As the furnace is the place where the fire is, in early heaters, below the water vessel, purging the furnace usually means to flush the firebox and passages with air to eliminate combustibles.
As the boiler is the entire assembly and usually refers to the water vessel, purging the boiler usually means flushing sediments and particulates from the waterside.
For they who use either to describe nothing, answers are not easily forthcoming. I notice that Canadians usually call boilers furnaces; it must be a historic thing related to frontier growth patterns.
Get me that thing over there, please.