I have owned a Jotul C450 Kennebec for 6 years now. Here are a couple of suggestions for things I have come up with for the stove:
The fan is kind of noisy, especially if placed on high. Get yourself an in-line plug-in rheostat and adjust the speed of the fan until you find the zone where you hear air but not whining, should be around mid range. The fan unit does require maintenance. Clean it out completely with a blower. Get an oil bottle with a needle on the end of it and carefully drip just a few drops now and then on the fan's bushings. If you don't, they will start to cease and slowly start to make a whining noise. By then they are shot and that blower is real pricey. To encourage blowing it out and oiling it, remove the screws that hold it secure to the stove and leave them out so you can just pull it out anytime you like.
For your surround, I suggest you pull it off and remove the two bolts that hold the top piece onto the side plates. Leave those bolts out. This allows you to remove the surround easily since it will now be in three separate loose pieces. That allows you to quickly and easily remove that surround, then remove the four bolts that hold the front shroud onto the stove and that exposes a nice cook surface for when power goes out. I even made up 4 wing nut bolts and replaced the bolts so I don't need any tools to set up for cooking.
For cooking without removing anything, they make very shallow, round fajita cast iron pans. They will slip into the blower shroud 1 1/4" void and rest right on top of the hot stove for cooking. To keep things clean, get yourself a small round pizza tin pan, turn it over, and set it in the pan over your bacon and eggs to keep them from splattering onto your stove and shroud. I put toast directly onto the stove top then flip it out of the narrow opening with a fork.
For most efficient burns, bore a 3" hole in the back of your chimney and install a 3" galvanized piece of flue pipe onto the 3" collar on the rear of the stove. You can start with a smaller hole then eyeball the stoves collar through that to determine which way to enlarge the hole to line up with the stoves fresh air intake collar. You will need about an 18" piece of flue pipe to reach through to that collar and extend out from the chimney. If you do this with a hammer drill it will look pretty crude but if you mortar it in around the exposed pipe afterwards, it will look like a real professional install.
You will find your two air injection holes can build up with ashes from the fire box. To resolve that, use a blower and insert it into that exterior fresh air intake pipe (another good reason to install one) when the fire box is cold. Turn on the blower and work your draft lever back and forth. That will blow out anything that gets into the primary air duct and injector holes, the secondary air rear channel and it's manifold, and the air wash channels.
To properly sweep the stack you should remove the manifold. It is quite heavy and can feel awkward to remove. The first thing you will want to do is to get a plastic grocery bag, wad it up, lift the rear of the manifold and put the plastic bag over that rear channel's opening. This keeps all the junk from falling down into the channel which is very hard to clear out if it gets full of carbon flakes. The trick is to raise one side of the manifold way high, then to release the other side, then lower the other side while rotating the manifold and wind it out of the door opening. To aid in this procedure, pull that blower unit (another good reason not to have it bolted down) and put a foam gardening pad down where it was. Put your knees on that pad and rest your elbows on your thighs. This position makes it much easier to manipulate that heavy secondary air manifold.
The rope seals on the doors and windows usually start to leak with time. You will notice short, dirty burns with dirty windows. What ever you do, don't buy Rutlands gasket cement. It is hard to get out of the tube and usually leads to a burst tube. Once on the stove it dries hard as a rock, you have to literally hammer and chisel it out of the grooves next time you replace your rope gaskets. The far better product to use is Mecco Gasketing Cement & Stove Sealer. Much easier to work with and much easier to remove later.
If your doors start to leak or feel like they aren't pulling in as firmly as they did originally, or if you get any of the above symptoms, you can try adjusting the tension on your latch. To do that, remove the two allen screws from the U-bolt on the face of the stove itself. Take one washer off each allen screw from behind the U-bolt and put them under the head of the allen screws for storage. That will tighten the closure on the doors. Only remove the number of washers that allow for a tight seal as you never want to over tighten the doors, they can warp.
If you use 3/8" rope for the door gasket as suggested in the manual, be sure not to stretch the rope when adhering it into the groove. It needs to be pooched up in order to give you a tight seal and not stretched thin so it fits down into the groove. If you try to use 3/8" rope and just can't get a snug seal then buy 1/2" rope gasket but be sure to install it relaxed and not pooched up. 1/2" works fine if just carefully laid in the groove but if pooched up it will become too thick and can result in warped the doors and/or damage to the door latch itself.
If your glass does get stained for any reason, get a liquid grill cleaner from your local cleaning store. I have found nothing in any of the fireplace stores that will remove the worst of the build up like the grill cleaner will do. Put some in a spray bottle then lay newspaper down to protect your ash plate etc. Spray a layer on windows that are no warmer than 100 degrees. Let it sit up to 7 minutes for real bad deposits, then wipe it off with newspaper. On the real tough stuff, like when a log sits against the window overnight, I end up using it one more time. To do a final window cleaning, get a second spray bottle and fill it with straight ammonia. Spray the ammonia on the glass then wipe it off with paper towels. Newspaper works also but paper towels leave them even clearer.
Mr. Freeze