1000 gals press storage

What about plumbing in some cast iron rads, at strategic places (like under a workbench?) where you would appreciate the heat, between the heaters & the storage return? Those things can really get the heat out of the water & give great heat at lower temps - lower your return temps even more.

Plus can usually be found used, and solid.

maple1 said:

What about plumbing in some cast iron rads, at strategic places (like under a workbench?) where you would appreciate the heat, between the heaters & the storage return? Those things can really get the heat out of the water & give great heat at lower temps - lower your return temps even more.

Plus can usually be found used, and solid.

Click to expand...

I have 13 cast iron radiators sitting in my shed unused to this point. I need to get them in somewhere. I have been waiting to get a buffer installed for those too....After a certain point of spending money on a system it gets harder to spend more to have it work better to a uncertain extent.

gg

Our tank is horizontal , but mixing and any complexity for both DHW , and heating is eliminated by two internal heat exchangers at the top of the tank!

Hey, flyingcow, if you can oversize the Modine-type heaters they will work better with lower supply temps (from storage).

Love the idea of a big cast iron rad on the return line under a work bench.

flyingcow said:

it looks to be over 3000k

Click to expand...

I found if you purchase a tank and do not do all the work yourself the costs are high for thermal storage.

The best option I saw for insulation was a insulation board box and blown in fiberglass or loose insulation. The insulation board can be had used to save money.

after much examination I felt that $3-4 a gallon was normal for an uninsulated pressure tank.

you could also look into tiger foam and foam yourself. I forget those prices

I would also think about an insulation blanket similar to what "heaterman" utilizes on his Garn installations.

I just framed a box around my tanks and put the insulation to it. Quite cheap.

Also with a box, you could crack one end open and make it like a great big rad if you want a lot of heat in a hurry.

There is a used insulation place on the east coast of Maine I believe. If you know a trucker you could save.