Smoke stack

[Gumlaw's sugar shack]

HI guy's Is It true what they say about the stack. It should be twice as long as the evaporator example 6' long = 12' stack. Also for those who use oil fired rigs should you run a damper on the stack. I am new to oil fire so any input would be great. Thank's. Todd

[brookledge]

Yes the stack should be twice the length as a minumun. Most oil fired evaporators will use barometric damper to keep it from getting too much draft which will pull the flame away from the nozzle making it inefficient.
Keith

[Thad Blaisdell]

My understanding of the use of a damper is you would only need one for oil if your stack is too long.

[3rdgen.maple]

you would be correct with the length. If you do a search you will find ALOT of threads that have already answered your questions.

[Gumlaw's sugar shack]

Thank's Guy's

[Sugarmaker]

I agree that on a wood fired rig the stack needs to be 2 x the length of the arch.
Question?
Does the stack on a oil fired also need to be 2 x? I Would think not? since you have a closed system not requiring draft for the fire.???
Any way when we ran oil on the farm we had a bout a 12-15 foot stack on a 3 x 10 arch.

Chris