Sealing an arcoliner

Robert_H · July 30

I did a repair on an Arcoliner recently and I will be going back to do an annual service and tune up. I did a quick combustion analysis before I left and even when I had what could be called a good looking Flame there is way too much excess air. The draft in the pipe is between -.03 and - 05. I haven't tested the draft over the fire but I'll bet good money that it's higher than what I want it to be.

Right now I'm assuming the excess air is coming from the doors that are no longer fully sealing themselves. Any ideas on a removable method of sealing up around those doors? I don't want to gob them up with furnace cement and then have to chip it off every year in order to service it. What would be ideal would be a high temp stays flexible, putty. I just don't know anything like that but maybe some of you do or have another idea for me.

JUGHNE · July 30

Are the doors just flat to flat contact without a gasket groove?

If so, I have gotten some almost flat or small diameter temp rated gasket and taped it in place with blue painters tape. Close the door and cut off the excess showing if you wish.

Next time opening the gasket will probably just fall out and maybe reusable.

bburd · July 30

Sounds like the barometric draft regulator might need adjustment too.

Robert_H · July 30

https://forum.heatinghelp.com/discussion/comment/1901150#Comment_1901150

Yes, flat to Flat contact just as you described. I like your idea I'm going back tomorrow

Robert_H · July 30

Actually the draft regulator was laying on the floor lol. I repaired it and plan on replacing it. However on the spot I did get the draft adjusted to the readings I posted earlier. But tomorrow I will be looking at the draft over the fire. And making the proper adjustment

HVACNUT · July 30

This is the boiler with the front double doors? Its been a long time but isn't there a groove around the perimeter of the doors for kaowool rope.

EBEBRATT-Ed · July 30

Two ways:

Red RTV hi temp silicone in a caulking tube or

You can by Kao wool flat tape or round rope.

I put it on by quickly wire brushing the cast iron and spray it and the rope with 3M contact cement. Let it dry and then stick the rope on

If you have a lot of air leaking in the Co2 will be low. Draft in the flue doesn't matter much over the fire should be -.02ish. Could be leaking around the doors between the sections or into the fire box.

Take a Co2 over the fire (don't burn up the tester). If over fire is higher Co2 than at the breech you have air leaking in.

Steamhead · July 30

What model Arcoliner? What burner is on it? What nozzle are you using?

mattmia2 · July 30

if you do it right with the silicone you can oil or wax one of the surfaces and clean the other surface and get it to stick to one surface but not the other and make a gasket that will come away with the door.

also look carefully at all of the other various seams and dampers and such and especially where the burner is mounted.

I think @EBEBRATT-Ed mentioned a type of furnace cement you could chip off and mix with water and stick back on. although that really just sounds like clay.

Robert_H · 12:25AM

https://forum.heatinghelp.com/discussion/comment/1901159#Comment_1901159

Yes, this has double front doors I didn't notice a Groove for a gasket but I will look at that when I go back. Thank you

Robert_H · 1:08AM

https://forum.heatinghelp.com/discussion/comment/1901162#Comment_1901162

the label plate is rough but as best I can tell its a 0 154 7. series IBT J2. Beckett AF burner. and of course I did not make note of the nozzle

Steamhead · 1:57AM

Should be a 4-section. Dry-base or wet-base? Hint- if the return line connects just above the floor, it's wet-base. If it connects 12-18" above the floor, it's dry-base.

Sealing an arcoliner

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