Hi everyone,
I'm relatively new to this forum, but I have been using my VC Defiant Encore 0028 since I bought it new in 1987. I haven't used it much in recent years since I installed a high efficiency heat pump, but the recent cold weather got me using it again. It was on its second catalyst and I figured it was time for a new one, so I got one from Condor and also got a Watchman. Installed both, fired it up, and the catalyst took off, getting up to 1550 in no time. I guess I had been living in ignorant bliss before. I had to open the bypass to prevent it from overheating. When I started looking around and found this thread. I got a lot of ideas about what might be wrong. I checked gaskets, tightened bolts, and worked on changing the secondary air inlet. I couldn't adjust the bimetal thermostat position because of corrosion of the bolt and nut, so I made a longer wire linkage that helped. I still couldn't keep it under 1600 with a full load of dry oak, so I decided to put the 15 year old cat back in it. Lo and behold, it still seems to be working. It can still get up to 1600 with the primary closed and no visible flames in the firebox. I'm guessing that at the least, I will need to replace all my gaskets, including the wire mesh gasket for the griddle. I did find that if I sealed the secondary with aluminum foil tape I could keep it under 1550, but I worry about ending up with creosote accumulating in my flue. Any suggestions? I do have an Auber AT100 on order. That's another reason that I wish I had seen this thread first.