Peerless EC series boiler, How do I set the Draft?

Joe.G

How I adjust it? should it be done when it is cold outside and the boiler is running a full temp? I need all of teh input and instruction I can get. Thanks

Joe.G

Peerless EC series boiler, How do I set the Draft?

I have a dwyer Model 25 Mano meter, I would like to set teh draft in the Chimmney and the firebox I can seem to find the instructions that came witht eh stove. Thanks

Jim Davis_3

That is an oil fired boiler and usually requires a -.01" to -.02" draft over the burner. The barometric is adjusted until you get the draft at the burner correct. The flue draft is what it is. The draft at the outlet of the boiler indicates if the boiler is dirty. Should be -.02" higher than over the burner.

Robert O'Brien

Jim

"The draft at the outlet of the boiler indicates if the boiler is dirty."

I believe you mean over the fire

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Steamhead (in transit)

Joe, are you

a heating professional? If not, I strongly suggest you hire one. Setting up burners and boilers to run safely and efficiently requires knowledge and experience that most people who aren't in the business don't have. Try the Find a Professional page of this site, under Resources at the top of this page.

If you are a pro but don't have much experience with oil-fired equipment, we can direct you to some of the most knowledgeable people in the business who can help you learn. Let us know.......

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Joe.G

Why can't I get help on checking the draft, I do not see how checking it could lead to a problem, it may not be set right now so by checking it I could head off a problem.

Everytime I ask a ? here I get told to call a pro, I thought this site was here to help homeowners.

I understand everyones concern for safety which is great, But I would like to learn for my self, I am just asking how to do it, I would like to check it. Thanks

Bruce Stevens_2

If you just wnt to check draft

Then use your draft gauge, however if you want to adjust the draft you are going to effect other parameters of the fire, and then you will need a Combustion Tester Digital preferred, which means you will need to take a class to know how to use it properly. The guys here are trying to say it will take a pro to do what I have stated, so in the name of safety buy a Combustion Kit and take a class or take the least expensive way out and call a pro.

Bruce M_2

More Information Please Joe

Joe,you did not tell us if you have a Beckett, Carlin or Riello oil burner. Why don't you go to the Peerless website and download and print the Installation, Operation and Maintenance manual for your boiler. On page 14 of the manual you will find the answer: Adjust burner and barometric draft control for highest CO² (Maximum 13% [EC-03 - EC-05] or 12-1/2% [EC-06]) while maintaining a 0 Smoke and -.01 to -.02" W.C. draft overfire. You should print the manual and check that your boiler is piped and wired correctly.

It is located here:

Bruce M_2

More Information Please Joe

Joe,you did not tell us if you have a Beckett, Carlin or Riello oil burner and you did not list the exact model. You should also list the nozzle size and type that is in the burner. You also need to know the oil pressure setting. Why don't you go to the Peerless website and download and print the Installation, Operation and Maintenance manual for your boiler. On page 14 of the manual you will find the answer: Adjust burner and barometric draft control for highest CO² (Maximum 13% [EC-03 - EC-05] or 12-1/2% [EC-06]) while maintaining a 0 Smoke and -.01 to -.02" W.C. draft overfire. You should print the manual and check that your boiler is piped and wired correctly.

It is located here:

http://www.peerlessboilers.com/Products/ResidentialBoilers/SeriesECECT/tabid/120/Default.aspx#dnn_relateddocuments

bill_67

draft

on the subject of draft,if the flue draft is not .o1-.02
above over fire draft does this always mean it is time for a clean out or....any further tips on draft would be great

Joe.G

I have a beckett .85 B Nozzle, 140 PSI pressure and I think it is a 3 series oil boiler. Could I just adjust the draft in the chimmney with the baro damper? with out affecting to much else?

Jim Davis_3

Any change you make to the barometric in the rear will affect the burner settings. If you close the barometric more air will suck through the burner and more heat up the chimney. If you open the barometric less air will suck through the burner and the more chance you have to soot it up. Really need more than a draft reading to determine whether to change the barometric setting. The burner may also need adjustment.

Joe.G

Is it better to have it open up a lot or not much at all, right now mine opens up about 1/2 way ( of it's travel)

Jim Davis

The safest and least efficient is closed more.

Joe.G

So it is safer to have it closed more but it also is less eficent that way?

Jim Davis_3

When closed it provides maximum air to burner but in turn sucks the heat up the chimney faster.

Joe.G

Everything I read was the opposite, you are talking about the baro damper on teh chimmney right?

Jim Davis_3

Yes, I am talking about the barometric damper which is free swinging damper and tee's off the flue at the outlet of the boiler. It is the one you can see moving when the burner comes on.

Anything you read about a barometric that disagrees with what I have posted, knows less about them than you. But it is not unusual for people to make comments about things they have little or no experience. I sold and taught contractors how to use barometrics for 30 years.

Robert O'Brien

Jim

I disagree with what you said. "The draft at the outlet of the boiler indicates if the boiler is dirty. Should be -.02" higher than over the burner."

It should be -02 overfire,-04 at the breech.The way you phrased it a 0 Over fire and -02 At breech would meet your requirements.

Higher than -02 draft loss through the unit may indicate a dirty heat exchanger it may also may have leaks between sections etc.

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Jim Davis_3

You are right in that I probably phrased that wrong. It really takes both readings to determined if the boiler is dirty. If the difference is greater than -.02" there is some restriction in the heat exchanger but not always. Having the air band too wide open can reduce the negative at the burner and increase the over fire difference also. The trick is it takes multiple types of readings or measurements to do complete diagnostics.

Steamhead (in transit)

Which is why

an experienced pro with a digital analyzer should make these adjustments.

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Joe.G

Why is it safer? to have it closed more? Thanks for the knowledge so far.

Joe.G

BTT