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1

Plumbing / Re: Help with plumbing route for NCB 250 with sidearm and extra storage

« on: February 28, 2013, 10:58:37 AM »

I see no reason you'd need extra storage, that doesn't necessarily make it more efficient. 

You would go to the hot water tank first, then first coil, then second floor.  Your also gonna need a high flow pump to keep the return temps up, I think it will be rare when all 3 are on together as the upstairs ones don't run much. 

The pump is gonna be an important part of this...

Thanks, Scott. 

How would I figure out which pump to get?  Is there a formula, or can anyone advise me about what specifications to look for?


Also, everything I've read seems to suggest that extra storage really increases efficiency.  Does that only apply to gasification boilers?  Am I wasting my time trying to tie these two storage tanks into the mix?

Thanks again!

2

Plumbing / Help with plumbing route for NCB 250 with sidearm and extra storage

« on: February 26, 2013, 08:23:58 AM »

Hello all! 

In a few days I hope to connect a 2 year old Nature's Comfort NCB250 to my house and end the onslaught of high heating bills.  I have some questions for you veterans of wood boiler use.

I have a 3600 square foot 2 story house with an unfinished basement which, if finished, would add another 1500 square feet.  I have two forced air furnaces: the upstairs one is a propane furnace, and the furnace that services the main and basement floors is an open-loop geothermal unit.  We never use the propane furnace (too $$$), so the geothermal unit does the whole job, but costs us in the neighborhood of $400 in electricity per month during the winter. 

My questions:

I want to plumb the hot water to both furnaces and a sidearm for DHW.  The distance between the two furnaces is approx 15-18 feet, one directly two floors above the other. The water heater (with extra buffer tank) is located in the same room as the lower furnace. 

1. What would the path be for the water to and from the OWB? 
2. Would I need to add a pump somewhere in order to move the water to the upper floor? 
3. I have 2@ 120 gallon propane tanks that I hope to use for extra storage.  How would the plumbing work in this mix as well? 

Any other advice/suggestions are welcome!  Thanks everyone!

Sixmenn

3

General Outdoor Furnace Discussion / Anybody know anything about a Greenwood 200?

« on: December 07, 2012, 12:13:46 PM »

Anybody heard anything about the Greenwood Model 200?  They claim to be a gasification unit.  I have looked all over the internet for reviews or information on their reliability and reputation, but can't seem to find anything except from the Greenwood people themselves.  Even a search of this forum doesn't seem to show anything. 

Anybody know anything about these units?  Are they any good?  Are their claims realistic?  Any help at all would be helpful.

Thanks everyone!

4

Home Made / Re: Gasification wood boiler build

« on: August 17, 2012, 09:22:51 AM »

If you have ? just holler and I will help if I can.

Hey Jackel.  I've looked at your build pictures over and over.  Awesome build, and many thanks for keeping us all informed.  Your work has sure helped a lot of people out in understanding gasification boilers better. 

I've got a build in mind and have a quick question in mind.  I see you put a bypass in, but I've seen other models that don't have the primary burn chamber with a bypass in it.  Do you think a by-pass is always necessary?

Thanks again!

sixmenn