This should be easier to find on their site but the manual can downloaded under the brochures section. Nothing worse than having to search around for manual but that seems to be the norm on every site I go to no matter what the product is:
http://www.harmanstoves.com/brochure.asp?id=15 This link is broken, either the page no longer exists or there is some other issue like a typo.
For some reason they don't have the manual files on the website. You can click the contact us link on the bottom of the support page to request a printed manual or you can send me a PM with your e-mail address and I will scan my manual and send it to you. the Mark I, II, III are all covered by the same manual.
Thanks but following the forum owner's link i found what i was looking for.
I just bought this stove used for the basement to help take some of the load off the harmon stoker on my first floor and also for when the power goes out i'll have heat...lol