I have a Royal 6150, indoor model non gassifier 150K BTU. I beleive you are looking at the 200K BTU model.
It is a very good heavy unit, very easy to use, as close to proof as is possible, which is good for when others need to operate (kids, spouses etc.)Made fropm 5/16 boiler plate, with heavy reinforced water jacket. ANSi certified. The max pressure is rated at 146PSI on the tag. Mine was purchased used a year ago and was 10 years old, with no signs of giving up any time soon. Will do coal too. They have made these for maybe 30 years.
Ash removal is easy with ash tray. Ash shaker works good. Heats up fast, not as efficient as a gasser but very consistent burn times, not finniky at all. fire box on mine will hold 26" long stick and I can fit about 10 to 12 -5 inch triangle splits in it. I did have to install a positive shut off fan, which was a good improvement. A little hard to light fires unless you put a few sticks in the bottom due to loading door being somewhat above shake plates. That keep you from having to reach way down into the firebox to light. burning oak seasoned for 1 to two years, masonary chimney, with no creosote issues. I have not measured stack temp, but it is hot enough to keep creosote burned off. (The storage really helps in this regard- keeps it from idling much , which causes all of these boilers problems). I am heating a 3000 sq ft home Long L shaped ranch with forced air heat exchanger. No backup heat. I do have about 500 gallons of storage and fair insulated house, attic could use more. Keep temp at 69 night and day. On avg, load twice a day with a few sticks added when I get home from work so I don't have to relight fire. If I fill it up before bed, there will be coals in morning. I am manually controlling storage at present, but plan to automate that with circulator, which may help a bit with efficiency. No problems getting water and storage to 180'
For the money, even new, they are a good buy compared to the gassifiers, but the trade off not as efficient. Check out their web site. Probably will use 8 chords per winter, which is similar to old wood furnace we replaced, but way more heat output.
http://www.royallfurnace.com/home-mainmenu-1.html
Mark