It begins. Froling +1000 gallons of storage

[hyfire]

How long burn time do you get per load in the boiler? What is the internal firebox volume?

 

[hyfire]

Thanks for the additional info Chew.

The tanks I got will weigh a lot less than yours. The largest tank holds 250 gallons of water plus around 500# for the tank itself. The total of 2500# / 4 legs / 36 sq-in (6"x6" base plates) is about 17psi. I expect minimal deformation using 1" 25psi EPS foam with a square of 1/2" OSB on top to keep from wrecking the foam when placing the tank. The biggest concern is the heat but insulation under the tank should help.

The final leg was welded on the tanks with them standing up on 3 legs and set so the tank did not rock. After the weld cooled none of them came out perfect. The 25psi foam is stiff enough that I had to shim one of the legs to keep the tank from wobbling. Once it has hot water in it the foam can give a little and it should still be OK.

The first two tanks are in place. The other two will go along the wall on the left.

View attachment 329172

What is your expansion volume tank size?

 

[OffGridICF]

What is your expansion volume tank size?

Hey @hyfire, are you asking Chew (the OP) or me?

Here's a link to my system install thread where I'll answer your questions:

https://www.hearth.com/talk/threads...ith-850-gallons-of-storage-offgridicf.204701/

 

[chew72]

How long burn time do you get per load in the boiler? What is the internal firebox volume?

I believe it's almost 3.5-4hr with softwood and 4-5hr with hardwood. the volume is 5 ft^3