Rob R. wrote:A stoker boiler in the garage basement could easily do the things you want...but there will be a code issue of having a boiler in the garage basement. Gasoline fumes are heavier than air.
LDPosse wrote:I would be the only one handling the coal, I wouldn't trust tenants (at least most tenants) with a solid fuel burner.
I would just like to be able to isolate the two oil fired boilers if they kick on, that way I can get the tanks topped off at the end of each heating season, and the oil used for the rental side, I can just write off. In the case that the renters were being wasteful in the shoulder seasons with the heat, I could stick them with a bill for excess oil use.
For the controls, I was thinking something along the lines of, "If the primary loop drops below X degrees, close the zone valves to isolate the oil boilers, then have them kick on". I need to do some research, as I am not really familiar with any boiler controls except for a simple aquastat.
I expect the oil to be used very little, but as some of you have stated, I need to keep some type of automatic heating in the house as a backup.Rob R. wrote:A stoker boiler in the garage basement could easily do the things you want...but there will be a code issue of having a boiler in the garage basement. Gasoline fumes are heavier than air.
That's a good thought, I didn't think about gasoline fumes being heavier than air, however I could take care of that situation by putting a good sealing door on the steps to the basement.
Luckily, there isn't much in the way of codes enforcement around here... I suppose it could be an issue if I went to sell the place, but I have no intentions of doing so in the forseeable future.
LDPosse wrote: The DHW is electric (hybrid) and I plan to keep that.
I would like to have a coal fired boiler that would be capable of heating the garage and the house
Berlin wrote:I don't know what you're talking about. There's been a coal boiler at your house as long as I can remember. At least since before you bought it anyway....
Richard S. wrote:LDPosse wrote: The DHW is electric (hybrid) and I plan to keep that.
At the very least consider running through the boiler first so it's hot water going into the electric. That's what we do and the breaker for hot water tank has been int the off position since it was installed. The only reason we have the electric is in case something happens to the boiler.I would like to have a coal fired boiler that would be capable of heating the garage and the house
LDPosse wrote: If I wanted to use the DHW coil, I would need to run the water through the house, out to the garage, into the boiler, then back into the house. I could be wrong though, wouldn't be the first time!
Good luck. As far as being wasteful, if you pay, they will use, PERIOD. Bare feet and tank tops are the normal in January, even to go out for the mail because they are so toast warm. Open the windows to let out the cigarette smoke. Funny how open windows kicks out the circulator pump , the windows will close then. With electric baseboard heat, bills will follow the tennant, and they don't run the fuel tank empty, adding oil by the 5 gallon can .LDPosse wrote: In the case that the renters were being wasteful in the shoulder seasons with the heat, I could stick them with a bill for excess oil use.