traderfjp wrote:I talked with my stove guy and he is adamant about NOT using a coil to make domestic hot water
Many people do quite sucessfully.
or to circulate water through the coils in my oil fired boiler.
Don't know why you want to do that or if you can.
He said that the water in the pipe could create steam and rip the pipes open and also that the stainless coil could fail inside the stove creating a mess and ruining the stove.
Never heard of that happening and even if it did short of the pipes exploding and causing damage it is just water. Considering the fact that these coils have been in use for at least 30 years (probably longer) I doubt that they would be able to still sell them or would if that was a problem.
He did say that I could buy a coil from Alaska or Keystoker (haven't decided what stove I want) but that the coil only holds 3/4 of a gallon and is basically useless.
I don't know what the volume is but due to the design they can heat incoming water very quickly. It takes a while for the heat to disipate enough to the point where it would become cold enough for example to not take a shower. Can't give you a time frame since our system goes directly into the gas hot water heater but I'd guess you would at least get enough hot water to take a quick shower probably more.
Besides routing it directly to the hot water supply is not how you set it up. You hook it to your current hot water heater. When the hot water is in use it tempers the cold water coming into the system. When it's not in use it circulates in a loop keeping the hot water in the heater hot negating the need for it run using gas/electric. This can be done naturally or with a small pump. Essentially it becomes a holding tank, I'd imagine you could even get a insulated tank and that would be all you would need for an adeqaute amount of hotwater. Cost is minimal if anything because most of the energy used to heat this water is going to be wasted during times when then the stove is not making heat for the house. Coal is always burning and this is one way to grab some of that unused heat.
As far as using it for baseboard unless it's a very small section I wouldn't reccommend that.