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Posted by Joe Brix on April 28, 2006 at 10:39:50:
In Reply to: Re: which is a good gas type hot water boiler posted by firstname.lastname@example.org on April 28, 2006 at 10:31:39:
The high mass of cast iron gives you slow warm ups and slow cool downs: more even heating. The boiler doesn't care. The heavy cast iron is very quiet. Copper fin tube makes more expansion noise as it heats up. But if you get more BB then you need and run it @ only 140° max, there will be little expansion noise and you'll save fuel by running in condesning mode. Heatpro will probably also suggest constant circulation. Remember that BB rating are usually based on 180° boiler water. So to get as much heat will cooler water, you need more BB.
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