had a 2 stage Lennox furnace installed Nov 2016. Also a Aprilaire 8466 thermostat. Furnace default with dip#1 on and only w1 wired causes the control module to run on low for 10 minutes before 2nd stage fires. Using both w1 & w2 wired stat will fire 2nd stage on recovery (+2 deg or more) but stays on stage one otherwise. Been here for 26 years. Original and first replacement were 110,000 btu single stage units and worked very well. Now the 2 stage unit on furnace control runs for 10 minutes then an additional 5+ on high just to maintain with 10-15 ambients. Using t'stat control (starts on 1st stage and stays there average 1 degree correction is 20+ minutes. AWFUL !!! Question is, does the Lennox need either w1 or w2 separately or in combination? I'd like to wire it to operate on 2nd stage only. O.K. over 35-40 deg ambient I'd take a hit but I can't imagine what this thing would do if we had a below zero spell like a couple years ago. FYI, if anyone's interested, both fuel and electric consumption is easily 20% higher than comparable years. Yes, I paid for a 2 stage but would be happy to eat the cost if I can just wire this to work as a 1 stage (on high). Thanks
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