Lots of water heating

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Old 10-08-11, 08:52 AM
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With the circulating pump, those tanks will be full of hot water and be ready to meet their demand. The down side is the energy lost from that much storage during stand-by. Eliminating stand-by losses is one of the primary advantages of "on-demand" hot water units. Using 2 smaller tanks reduces the mixing from colder water as it replaces the demand, that assumes the first two tanks can't keep up.

There are probably better and more efficient ways of providing the needed hot water, but people who own a 7K sq ft home with 7 bathrooms aren't really interested.

Bud
 
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Old 10-08-11, 09:04 AM
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why are there two much smaller storage tanks located after these heaters?
Are they possibly expansion tanks improperly installed? ( as it seems the two water heaters are ... for extra capacity shouldn't they be in PARALLEL rather than series? )

Do the tanks have an air valve on one end?
 
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Old 10-08-11, 09:08 AM
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I"m guessing the pump is for a recirc system that keeps hot water near the taps. I would imagine in a home that large, it would take 7 days to get hot water at the furthest tap without one.
 
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