My question is a simple one. My early 2000's Lennox Merit 90UGF doesn't seem to be producing any water out of it's condesate drain. No other wate leaks in furnace bay. Is this normal?
And yes the drain line is clear and properly routed too.
Ok, that makes sense. I had a gas man come last year and he made an adjustment with a really old manometer (not digital) and he bumped up the pressue a 1/4 turn so now it's probably over firing. Which way turning the screw reduces pressure?
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