Thank you all for the great responses.
That answers my question.
I do have another related question, however. I have been looking at diesel heaters and I know nothing about them except what I see online, I have never seen one in person. It looks like they are pretty simple, that there is an stack for them, and I am sure there is a lot of requirements about how high the stack comes off the deck and that kind of thing, and I can figure that out by reading the installation instructions, etc. But what I was really wondering is, what else does it hook to, what other requirements are there for it's operation besides a stack and obviously a connection to a fuel source. Does it need any kind of a fuel pump or does it already have something like that built into it ? I guess it probably needs an electrical connection to spark ? Does it use a lot of amps of electricity ?
I assume too that there isn't any real chance of carbon monoxide building up so long as the stack remains intact and is venting to the outside. (?)
Thanks again for the diesel/heating oil answers.