Mike Lamb Posted December 16, 2012 Report Share Posted December 16, 2012 If the heat exchanger on a boiler cracks will it necessarily leak? Does this look like a crack or just corroded seams? Click to Enlarge 63.75?KB Link to comment Share on other sites More sharing options...
Eric B Posted December 17, 2012 Report Share Posted December 17, 2012 I don't have an answer. In any event, does it make any difference? A condition like that makes our job easy - it needs to have an HVAC guy take a look. Link to comment Share on other sites More sharing options...
Bill Kibbel Posted December 17, 2012 Report Share Posted December 17, 2012 From what I can see in that small area, it looks like some seepage between cast iron sections. It could be failed seals. It could also be from a boiler that sits "cold" all summer. It might be an oversized boiler or no boiler bypass resulting in rapid, rather than gradual, expansion or contraction of the cast iron. Link to comment Share on other sites More sharing options...
Jim Katen Posted December 17, 2012 Report Share Posted December 17, 2012 Is that thing properly called a heat exchanger or a water jacket? Link to comment Share on other sites More sharing options...
Bill Kibbel Posted December 17, 2012 Report Share Posted December 17, 2012 Is that thing properly called a heat exchanger or a water jacket? Cast iron sectional boiler = heat exchanger.Fire-tube boiler (locomotive), outdoor wood-fired boilers = water jacket. Link to comment Share on other sites More sharing options...
kurt Posted December 17, 2012 Report Share Posted December 17, 2012 Tuning in from the PRC, Hubei Province, Wuhan, Wuchang District.....internet access is sketchy at best, so not sure if this'll post. The name of the coffee shop where I'm ensconced (translated literally) is "Long Iniquity", a Chinese rebel yell into the ether. We (me and my workmates) call those section leaks. It's one of the very few things I might list as something to watch and monitor. My guess is it's a very minor problem, caused by the things Bill noted. Link to comment Share on other sites More sharing options...
hausdok Posted December 17, 2012 Report Share Posted December 17, 2012 Hi Kurt, Good to hear from you. I've always called those section leaks too. I think the media between sections oozes a little bit of water over time. As long as it's automatically refilling I don't worry about it unless it's causing issues with other parts of the boiler - steel through rods, pans, etc.. I've looked at 80 year old boilers where that stuff has developed to the point of being something you'd see in an underground cavern 'cuz they'd never bothered to clean the boilers. ONE TEAM - ONE FIGHT!!!! Mike. Link to comment Share on other sites More sharing options...
kurt Posted December 17, 2012 Report Share Posted December 17, 2012 Hey Bro'....I got through. When it's bad it's like you said....stalactites and white foaming crap. This one's minor. I wish you here. The scale, intensity, and general crazy ass approach of Chinese construction is overwhelming. It goes from the sublime to the ridiculous to "WTF is that?" and back to the sublime quicker than can be described. Link to comment Share on other sites More sharing options...
hausdok Posted December 17, 2012 Report Share Posted December 17, 2012 Yeah, I wish I'd made the trip with you this year. Wife left for Berkina Faso three weeks ago on a mission for her church. I picked her up at the airport a week ago and on Monday she got word that her 93-year old mother is ailing again in Korea; so, off she went to Korea. I put her on the plane Saturday morning. She won't be back for nearly a month, possibly longer. It's me and Peanut. Two bachelors. ONE TEAM - ONE FIGHT!!! Mike Link to comment Share on other sites More sharing options...
Mike Lamb Posted January 13, 2013 Author Report Share Posted January 13, 2013 Another old, leaky heat exchanger. Click to Enlarge 61.3 KB Link to comment Share on other sites More sharing options...
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