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IBC SL 20-115 Boiler Problem
MAXwsd
Member Posts: 3
I recorded this banging noise from my boiler.
This is the first winter in use. There was an ignition error or "Failure to Ignite" error, something to that effect. Then after an hour it tried again and I got it on tape. It did ignite but that loud banging noise concerns me to say the least! Any ideas? Thank you!

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Lp or Natural? Inlet gas pressure?0
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If you havent found the switch yet, there should be a toggle near the the boiler, near the equipment room entrance, top of the stairs? With a blue or red plate.
But I hope a tech has been there already and fixed it.0 -
Please let us know what the problem was.0
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Following your youtube is one from IBC.
Do you have a concentric exhaust termination?
I have this backfire in a commercial condensing water heater.
The concentric thru the roof creates a negative pressure on the air inlet if a good windy day......25-35MPH.
Or on other ModCon is the bottom drain is plugged with what IBC calls "rabbit turds", (we use the more tactful term of coffee grounds), that can cause backfiring also.0 -
I don't know what concentric exhaust is. There are two pipes coming out of the boiler through a chimney stack. The panel is now saying "ignition module" but it's making that god-awful noise every time it tries to fire up. Sometimes it fires up, sometimes it goes into error.JUGHNE said:Following your youtube is one from IBC.
Do you have a concentric exhaust termination?
I have this backfire in a commercial condensing water heater.
The concentric thru the roof creates a negative pressure on the air inlet if a good windy day......25-35MPH.
Or on other ModCon is the bottom drain is plugged with what IBC calls "rabbit turds", (we use the more tactful term of coffee grounds), that can cause backfiring also.0 -
A concentric exhaust termination assembly has an obvious single pipe for exhaust with a lower cone/skirt around it for inlet.
The other option is 2 separate pipe ends separated by height or vertical distance.0 -
Hi, I just cam across this thred. If you are still having the problem with your boiler please let me know. I was having the same problem with mine and I have the fix.0
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Don't keep it to yourself.... whatcha got?0
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