HELP! Plumbing Closed loop wood boiler to indoor boiler

  • Active since 1995, Hearth.com is THE place on the internet for free information and advice about wood stoves, pellet stoves and other energy saving equipment.

    We strive to provide opinions, articles, discussions and history related to Hearth Products and in a more general sense, energy issues.

    We promote the EFFICIENT, RESPONSIBLE, CLEAN and SAFE use of all fuels, whether renewable or fossil.

maple1

Minister of Fire
Sep 15, 2011
10,773
Nova Scotia
My main circ for the wood boiler is also at the highest point in the hot supply line to storage,never any problems. In fact one hydronic specialist commented to the fact that i had wisely put the circ at the highest point.The circ that supply's my plate heat ex-changer which supply's the house is at the same height and no issues with it either.
You do need boiler protection,i use a near boiler pump instead of a mixing valve,no problems with it either.
Do you have an air scoop or vent up there with it? Where is your expansion tied in? No doubt pumping away can be good but usually those are corresponding requirements or recommendations.
 

Woodman1

Burning Hunk
Jan 15, 2018
138
Michigan
The near storage plumbing looks much better both functionally and visually. As long as you can get the air out it should work now.

As far as controlling the wood boiler there should be some type of aqua stat to turn off the blower to limit your water temperature.
 

Jcc583

New Member
Nov 30, 2018
60
New York
The near storage plumbing looks much better both functionally and visually. As long as you can get the air out it should work now.

As far as controlling the wood boiler there should be some type of aqua stat to turn off the blower to limit your water temperature.
I have a high low for fan and circulator which is working as it should!
 
  • Like
Reactions: Gasifier

Jcc583

New Member
Nov 30, 2018
60
New York
My propane boiler auto fill and air scoop are doing a great job! I also closed the supply between buffer and propane well leaving return open allowing propane boiler circulator to “prime” buffer obviously I opened supply when I felt buffer was full and pressurized. This helped send water through supply! After which my auto fill ran as everything circulated and I knew it was primed!
 
  • Like
Reactions: Gasifier

Gasifier

Minister of Fire
Apr 25, 2011
3,190
St. Lawrence River Valley, N.Y.
Alright! Glad you got it solved!:cool:
 

Jcc583

New Member
Nov 30, 2018
60
New York
After I get everything 100% I plan on adding an arduino board that records in and out temperatures, tank temps and burn cycles, along with some other fun automation. Stay tuned the fun is just kicking off! And no I’ve never done automation but the internet is a beautiful tool! First I gotta get my storage to burn cycle managed manually by size of wood load vs outside temperature basically learning its capabilities. Also get my second storage tank incorporated or put a plan in place. I appreciate all the help and there are some smart people on here doing some amazing things! Where there’s a will there’s a way!
 
  • Like
Reactions: Gasifier

Woodman1

Burning Hunk
Jan 15, 2018
138
Michigan
That sounds real good and I wish you the best of luck. However don't underestimate the beauty of simplicity. My automation amounts to 1000 gallons of storage and a 6 hour burn in my EKO once every 24 hours. Keep us posted
 
  • Like
Reactions: Gasifier

maple1

Minister of Fire
Sep 15, 2011
10,773
Nova Scotia
I really appreciate my Maverick bbq thermometer when the power goes out.

Do you know what will happen if you lose power in the middle of a good burn? That's the main time where a heat dump is important.
 

Jcc583

New Member
Nov 30, 2018
60
New York
I really appreciate my Maverick bbq thermometer when the power goes out.

Do you know what will happen if you lose power in the middle of a good burn? That's the main time where a heat dump is important.
I’m planning on putting a solar battery back up with my garage as dump but need time and money.
 

salecker

Minister of Fire
Aug 22, 2010
1,418
Northern Canada
Do you have an air scoop or vent up there with it? Where is your expansion tied in? No doubt pumping away can be good but usually those are corresponding requirements or recommendations.
I have no air scoops,i took all the auto air removers off i suspected they were letting in air.This year i had no air to let out before my initial firing.Also never added any water this year,and the system went to max temp yesterday and no water blew out of my pressure valve.So i finally have enough expansion and the system is doing what it's supposed to.
My expansion is higher than the circ's,and tied in before the circ's
 

Jcc583

New Member
Nov 30, 2018
60
New York
Well the saga continues! Wood to thermal worked perfectly! Thermal to system not so much still struggling with that supply line! Highest temp was 150 in supply! Buffer was 220 top to bottom! God damn air! Is that Taco 007 large enough to pull from tank?
 

Jcc583

New Member
Nov 30, 2018
60
New York
I’m also thinking my gated check valve placement was a terrible idea! That may be limiting flow! I know I had flow when I ran propane and thermal together. So now I’m confused.
 

Woodman1

Burning Hunk
Jan 15, 2018
138
Michigan
007 should be fine. I don't know why you need the check valve you have installed, but it shouldn't hurt anything either. Close the valve to house and try cracking open the circulator flange while it is running to get some air out. It will be a mess but I see know other way if you have air trapped between storage and circulator
 
  • Like
Reactions: Jcc583

Bad LP

Minister of Fire
Nov 28, 2014
1,563
Northern Maine
My check valve caused me issues so I pulled the guts out and all was fine.
 
  • Like
Reactions: Jcc583

Jcc583

New Member
Nov 30, 2018
60
New York
007 should be fine. I don't know why you need the check valve you have installed, but it shouldn't hurt anything either. Close the valve to house and try cracking open the circulator flange while it is running to get some air out. It will be a mess but I see know other way if you have air trapped between storage and circulator
That’s exactly how I got my wood boiler pump primed! Thanks!
 

Bad LP

Minister of Fire
Nov 28, 2014
1,563
Northern Maine
I can remove flap without disassembling piping?
Mine did. The stainless steel pin (hinge) is under the side screw. Check comes out through the large cover plate. I was not taking all that piping out to remove the swing check. I would have cut it out first and used some slip couplings or a union.
 
  • Like
Reactions: Jcc583