Pic of My Tankless Space Heat/DHW Combi Boiler Set up -

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coalmeister
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Posts: 668
Joined: Fri. May. 23, 2008 3:13 pm
Stove/Furnace Make: Alaska 140 Furnace -sold
Stove/Furnace Model: Harmon VF3000 -sold
Location: Between Rochester & Buffalo NY

Post Tue. Sep. 18, 2012 8:16 pm

Nat gas finally came down our road. Thought the plumbers might enjoy this picture. (I'm not a plumber and I liked it)

I have never seen the feed and return in the same loop before. Four zones, kitchen under floor heat, 1st floor heat, 2nd floor heat & upstairs bathroom heat. 200,000 BTU's yet a PVC exhaust, crazy. Makes hot water for the radiators but when you flip on the DHW to wash your hands it switches over for that, then switches back to the radiators when you're done. Sweet!
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Last edited by coalmeister on Tue. Sep. 18, 2012 10:28 pm, edited 2 times in total.

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Yanche
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Posts: 3030
Joined: Fri. Dec. 23, 2005 12:45 pm
Stoker Coal Boiler: Alternate Heating Systems S-130
Coal Size/Type: Anthracite Pea
Location: Sykesville, Maryland

Post Tue. Sep. 18, 2012 9:37 pm

Yes, it's an uncommon piping method but one of multiple ways to pipe it. The manufacturers installation manual, including several piping options is here:

**Broken Link(s) Removed**)_Install_120306.pdf

It's not clear what type of radiation you have, but if it's all baseboard I would have chosen a different piping based on the installation manual suggestions. The real test will come when in's all under loaded conditions. Meeting the desired set temperatures in each zone should be the performance criteria. More than one way to get a good outcome.

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coalmeister
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Posts: 668
Joined: Fri. May. 23, 2008 3:13 pm
Stove/Furnace Make: Alaska 140 Furnace -sold
Stove/Furnace Model: Harmon VF3000 -sold
Location: Between Rochester & Buffalo NY

Post Tue. Sep. 18, 2012 10:19 pm

I have mostly cast iron radiators with some baseboard which are also cast iron. Just seems odd that a feed would be right next in line with a return.


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Sting
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Posts: 2966
Joined: Mon. Feb. 25, 2008 4:24 pm
Other Heating: OBSO Lennox Pulse "Air Scorcher" burning NG
Location: Lower Fox Valley = Wisconsin

Post Thu. Sep. 20, 2012 5:48 pm

Very nice simple clean installation. Congrats, relax and enjoy - you now have a hands off system!

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marsoviy
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Joined: Sun. Sep. 30, 2012 2:33 pm
Location: Minsk

Post Sun. Sep. 30, 2012 2:54 pm

hi
Good hydraulic piping. but it is better if the collector will be thicker.
For softer work hydraulics.
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