Perhaps my proposal is not very original, but it will certainly be useful to summer residents, farmers and other rural developers. The essence of my proposal is not to install a hot-water heating system at home, but to combine a Russian stove (with flooding) and a cast-iron radiator for organizing water heating. The fact is that a factory boiler is expensive and you do not always get it. A stove in a rural house (Russian or some other) is always required for cooking for people and animal feed.
The basis of my design was taken Russian stove, described in the book of A. M. Shepelev "How to build a rural to m." In a word, I built a subflood and mounted a cast-iron radiator in it. It turned out very compact, convenient and reliable.
I built my own Russian stove with a heating plate, underfloor and a cast-iron battery more than 10 years ago, and all this time it perfectly heats a 56 m2 house. By the way, it is able to heat and more. Tested. I have already stacked more than ten such stoves and all of their owners are very happy. I note that the cast-iron radiator is not difficult to adapt to the "Swedish" type furnace.
In fig. 4 ... 6 are diagrams of my modernized Russian stove, which quite clearly illustrate its design.
I inform the future stove-makers that the following components were needed to rebuild the furnace: a stove, a battery of six sections (it is easy to dismantle such a battery by removing the stove from above); grate (suitable from the boiler "Universal"); metal sheet measuring 400x500 mm and 3 mm thick (it is inserted into the middle of the battery; pipes, etc.