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Author Topic: Best way to heat DHW  (Read 3527 times)

Bull

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Best way to heat DHW
« on: April 25, 2011, 08:40:25 AM »
As I have said in another post I got a Hardy H2 used last year. I buried 4 lines from the stove to the house, 2 for heat and 2 for DHW. during the hook up  I found that the coil in the top of the water jacket for the DHW was bad. A dealer told me that it was a 60 foot coil of copper pipe. I am sure that the stove has been frozen at some time in the past so I think the copper is split.
My question is get some different views on replacing the copper or just adding a plate heater at the 40 gallon tank.
My H2 is 200 + feet from the house and I run the pump 24/7 during heating season.
Thanks for your ideas.
Bill
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yoderheating

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Re: Best way to heat DHW
« Reply #1 on: April 25, 2011, 08:58:41 AM »
 What size of pipe are you using? The reason I ask is because around here often I have seen Hardy furnaces installed using 3/4 pipe. Its really hard to get good hot water and heat of 3/4 lines if you are running 200ft. 
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Southwest Virginia
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Bull

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Re: Best way to heat DHW
« Reply #2 on: April 26, 2011, 06:12:03 PM »
I have 3/4 inch lines
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RSI

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Re: Best way to heat DHW
« Reply #3 on: April 26, 2011, 07:14:37 PM »
What size is the other set?
I would put both sets in parallel and use a heat exchanger in the house.
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yoderheating

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Re: Best way to heat DHW
« Reply #4 on: April 26, 2011, 09:15:58 PM »
 RSI makes a good point. I actually have done just that when replacing existing units and it works well.
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Bull

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Re: Best way to heat DHW
« Reply #5 on: April 27, 2011, 03:28:09 AM »
RSI I am not sure what you mean by that. Can you explain?
Thanks
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RSI

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Re: Best way to heat DHW
« Reply #6 on: April 27, 2011, 09:13:35 AM »
I meant connect the two sets of lines together so you have more capacity.
Are all 4 lines the same size?
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Bull

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Re: Best way to heat DHW
« Reply #7 on: April 28, 2011, 03:46:06 AM »
Yes, all 4 are the same. I was just wondering which way is the most efficient.
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RSI

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Re: Best way to heat DHW
« Reply #8 on: April 28, 2011, 01:11:58 PM »
Running the water all the way out there and back in again doesn't sound very efficient.
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