Reznor has developed a way to deliver a constant amount of fuel to the burner regardless of viscosity. The key is the Reznor perfected fuel metering pump. There are absolutely no manual controls to adjust the flow rate. It is completely automatic. No more worry of overfiring or underfiring.
There is no need to connect your waste oil heater to your shop compressor. Reznor includes a quiet, on-board, adjustment-free compressor standard on all units. This eliminates the problems associated with using shop air or auxiliary compressors. It also means you don't have to leave your shop air on overnight.