Oil burner flow rate for 2X6 evaporator

[Brian]

I run a 4x12. I have a 6 gallon nozzle on low fire and a 7 gallon on high fire. The pump pressure is 145 p.s.i. that makes it about 15 gallons of oil an hr. I run 20-23% concentrate. After the pans are sweetened I make about 40 gallons of finished syrup an hr. on the first hr. The second hr. I am up to about 60 gallons of finished syrup an hr. I run a 701 carlin burner. I also run the sap depth at an inch deep. 4x4 front revolution style and a drop flue 4x8.

[maineboiler]

Thanks to all for the insights. I will be reducing the flow from 4 gph this season. Hopefully this will cut down on the noise as well. I an getting a new sugar pan this season and I will try to fit a gasket in between this and the back pan, but it may be too tight.
It may take a little longer to boil but I think this will be worth it if there is less scorching and I don't have to yell to be heard in the sugar shack.