Posted by jtown on January 20, 2000 at 09:10:30:
In Reply to: air adjustment posted by Joe on January 20, 2000 at 06:06:03:
It is not easy to set the air unless you can see the fire. Most modern equipment you can't see it, like looking in the old coal firing doors. And with the price of fuel up, a fine tuning with instruments can easily pay for itself. And your system may be finicky to set and change with wind etc. With that said you want it as lean as possible just like a car and then opened up a hair to allow for worse conditions later. The flame will tighten up without long fingers etc and the sound will change some. If someone had set it correctly before you might have another issue such as plugging filter, air in oil line etc. Filling a tank that is low can stir up a lot of dirt. It's good to not run it for an hour or two if you're there for it. If you haven't had it serviced in a couple of years you might well have a dirty nozzle. Make sure your heat exchanger is clean after your sooting.