Waste oil burner question

[Temaweaver]

I have a CleanBurn 1400 with a Saturn 140 burner. The problem is that the back plate of the furnace glows red and is warping. I have the secondary/combustion air turn open just to the point that the smoke disappears from the chamber and stack. The Saturn burners have no oil adjustment. Can I just reduce the atomizing air psi down to reduce the flame? We were at 14psi burning drain oil. Last week we mixed 50/50 waste oil to diesel fuel. Now I'm down to 10 psi. Can I cut back the psi further? Clean burn have a replaceable plate in the back and I'm afraid we'll burn a hole through it if nothing is done.

 

[oilslick]

I would turn her down some more, I find myself tweaking the one on our omni often though usually I stay at 10 psi min and turn down the oil pump speed til I am happy.

 

[Temaweaver]

I did some more interwebs research and found that the unit has a 10 psi low limit on the air. Lower than that it cuts off.

 

[Shop Specialties]

Let me get this straight, you have a old style CB 1400 firebox with a Saturn burner ? What altitude are you at ?

 

[Temaweaver]

700'

 

[Shop Specialties]

You are at only 700' altitude ? Leave the air at 14 PSI. Is the flame actually hitting the target plate ? What does the flame look like ? It should be bright yellow with orange tips. The more combustion air you add the shorter the flame gets but do not go to far where you lean it out.
It is not uncommon to have to change out target plates every so many years since the 1400 is such a small firebox.

 

[Temaweaver]

The plate has a warped bubble on it and glows when the unit shuts down. Is it ok to add combustion air till it goes away? If so tommorow I'll keep giving it a 1/4 turn till the redness tones down. I have it set just to the point the chamber isn't smokey. I also thought about setting a fire brick at the target spot.

 

[Shop Specialties]

No need to set any fire brick in front of the target. Start with a bright flame with orange tips, then start giving it more combustion air a little at a time. Remember, when you open the inspection door more combustion air is introduced so the flame will be different than when the door is closed.

If the redness goes away after the heater shuts off then you are good but if it stays glowing for minutes then that is not so good.

 

[Charles (in GA)]

On my Lanair the combustion air makes dramatic differences in the flame. Go too far one way, you get a low rumble. The manual for mine is excellent at describing what you get with too much and too little combustion air and also when the compressed air is right. And yes, open the inspection door and the flame changes some, but not alot.

Charles

 

[sc105b]

Charles, Finally got mine going!! Seems to be working well...