Can you have too much AUF ?

[Bruce L]

Just wondering since our rig was specially designed for our sugarhouse with a 90 degree elbow in the ductwork going to the AUF, could I put an even bigger squirrel cage blower on with variable speed motor, or could I possibly upset the balance of air by going too high?

[jmayerl]

Yes you can definitely put too much mair under the fire. But if you have a variable speed blower or damper in it that would solve the problem.

[Bruce L]

What would too much air do and how would you know, seeing as everything is completely sealed?

[nymapleguy607]

Too much AUF will make you stack temp soar. It will sometimes decrease the boil in the syrup pan and you will see a drop off in GPH.

[eustis22]

I cut a 6 in hole in my stove box to accommodate my stack, which is 8" X 8' on a 2X3 1/2 pint. I read somewhere that someone had obstructed his stack hole to get more heat into his pan...I have my arch ramped to the bottom of my stack hole. Should I push it up higher to increase my GPH?