efficiency

mikeGlosta

I have well mcclain oil burner hot water- old old old. Efficiency at 71pc. I can't afford a new burner right now. What makes the burner so inefficient? Can a technician raise it to 80 pc. I can sent pics with specs if necessary.

Thanks

Jamie Hall

Maybe -- but you will need a good one. It needs to be thoroughly cleaned. The combustion chamber needs to be carefully examined and any firebrick which is missing or damaged replaced. The technician should check and see if any baffles in the gas path are missing or out of place. Then he will need to check the combustion, paying particular attention to the flame pattern and adequacy (there is no guarantee that the nozzle which is in there is even close to right, nor at the correct pressure), and then adjust for correct draughts and zero smoke.

Does it take time? Yes, probably the better part of a day if it hasn't been done in the last year or two. Is it worth it? Yes.

STEVEusaPA

Should be doing better than that-properly cleaned and set up correctly. High draft, high excess air kills efficiency, as does underfiring.
Best to get a tech in there who knows what they are doing.
Let’s see some pictures.

pecmsg

mikeGlosta said:

I have well mcclain oil burner hot water- old old old. Efficiency at 71pc. I can't afford a new burner right now. What makes the burner so inefficient? Can a technician raise it to 80 pc. I can sent pics with specs if necessary.

Thanks

Did you get the combination print out?

mikeGlosta

Would these pics give more information?

EBEBRATT-Ed

Co2 is low. Should be 11%. Stack temp is high by 50-60 degrees.

A good cleaning and adjustment should get you to 80%.

Did they actually clean the soot out of the fireside of the boiler or just change the nozzle and filter and call it a cleaning?

MikeAmann

Were you there watching everything while the cleaning/servicing was happening?

Long Beach Ed

Ed and Jamie are right. That is a modern boiler which is capable of better work. It's a big job to clean a boiler, check and set up the firing and properly adjust combustion. I don't think 80% would be unreasonable to expect. Those stack temperatures say the boiler's probably dirty.

pecmsg

If there only there for an hour there not doing there job. 

mikeGlosta

I don't know what was done. I paid for a cleaning.

MikeAmann

mikeGlosta said:

I don't know what was done. I paid for a cleaning.

Then you need to be more involved with YOUR heating system.

EBEBRATT-Ed

@mikeGlosta unfortunately a lot of service companys don't give a dam. In and out change the nozzle and filter and that's it.

I think the boiler is dirty and needs a good cleaning

HVACNUT

It looks like a 3 section 66. The boiler is under fired, unless the pump pressure is 200 psi.
Stack temperature is way too high. The boiler is dirty and the draft numbers possibly fudged.
The roofing nail isn't helping to bring the CO2 number up.

ChrisJ

MikeAmann said:

mikeGlosta said:

I don't know what was done. I paid for a cleaning.

Then you need to be more involved with YOUR heating system.

Yes,
When you hire a professional to do a job you need to be more involved..........

BDR529

That is from May..Fuel line should be more of a concern than Effcy'.

captainco

The internal pressure drop of oil equipment when firing correctly and clean is -.02" difference. If it is dirty the overfire would be less and the difference greater. If it is underfired the difference would be less, which is the case here. Of course that could be because it is dirty and the technician did that to save time.