Just finished with my stove install and have been burning a few hours a days for the past three days. My setup is an Avalon Pendleton free standing stove to Durablack double wall through the wall installation to Excell chimney. Today I think I was a little overzealous and overfired my stove. It was really loud and my stove pipe on the exterior of my home with outside temperatures in the 20s was really hot to touch. Should Class A ever be more than lukewarm to touch? I think a thermometer would help me with my burns but I was unsure as to best placement on the Avalon stove with double wall pipe?