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Old 02-22-2017, 09:35 AM   #1
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Fire stove and tanks, pipe placement


If you have a simple setup with a wood furnace and a hot water tank, where should the inlet and outlet pipes be placed in the tank? Should the hot input be on the top of the tank and the outlet to the stove be on the bottom of the tank?

The current setup is a tank with copper pipe going from the bottom and wrapping around the chimney of a wood stove. The pipe wraps up the chimney for a couple of feet then returns to the top of the hot water tank. This is in an off-grid setup where there is no mains pressure, just a water tank on top of a hill.

I am posting this on behalf of a youtuber who has implemented this setup but is having mixed results with the input at the top of the tank and the output at the bottom. This video shows the installation and additional details such as the relief value setup:
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Old 02-22-2017, 11:20 AM   #2
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Re: Fire stove and tanks, pipe placement


Well, assuming cold water heater manufacturers know how to build them, cold water into the bottom, hot out the top with heat source hottest at the bottom.
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Old 02-23-2017, 01:17 AM   #3
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Re: Fire stove and tanks, pipe placement


Bob, just to clarify, are you saying the output to the furnace should be on the bottom and the return pipe from the furnace should go into the top?

The actual feed to the kitchen sink is just a tap from the bottom pipe before it gets to the furnace chimney.
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Old 02-23-2017, 06:53 AM   #4
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Re: Fire stove and tanks, pipe placement


Not sure of the thermosiphon pipe and its role. Perhaps another off-grider will come along.
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