About 3 weeks ago I installed the above listed stove in my basement. I used one appliance adapter hooked up to a clean out t 3067 hooked that to five one foot sections of pipe 3012 and another 3090 elbow another 3012 pipe horizontilly placed thought the wall to another 3067 clean out t. on the clean out t I have one 3012 verically placed one 3090 elbow and lastly a vent cap. upon ignition im getting a slight smoke smell comming from the elbow region. I even went as far as switching the elbows with the same problem re-occuring. If you look at the AC-3000 kit box installation instructions its a fairly simple install. The s tove works fine heats well and doesnt set off smoke or C02 detector. However my install of the same stove om my main floor is flawless. I must say on my main floor my stove isa through wall installation with most of the pipe on the exterior. Sorry for this wordy thread any ideas before I go and buy foil tape and place on elbow seams. With the exception of slight smell on ignition it rocks but safet 1st.