Thermosyphon System

Greetings fellow permies,

I was curious to know if anyone on here has had any experience using a wood burning stove, water coil and water storage tank (Thermosyphon/Convection) system? We are considering this type of system in our off-grid home in Tennessee. I would like to here of your experiences with its use (pros/cons) and what you would do different, if any? Safety is a concern, but my understanding is, if done right there is nothing to worry about. Thoughts?

I have built and used the system sold by Lehmans:

The 42 gallon tank:
https://www.lehmans.com/p-1388-42gal-hot-water-range-boiler-system-one.aspx

The stainless steel coil, which fits the brand of wood cook stoves that they sell.
https://www.lehmans.com/p-3420-hot-running-water-coil-for-bakers-choicepioneer-maidpioneer-princess-wood-cookstoves.aspx

The plumbing instructions:
https://www.lehmans.com/p-3148-hot-water-from-your-woodstove-booklet.aspx

It is safe if you follow all the instructions.

It also uses two pressure relief valves and a mixing valve, and is plumbed with 1 inch copper pipe.

It works; however, it is expensive.

- joe