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Author Topic: E-Classic 2400 rear doors blown off!  (Read 433 times)

DeerMeadowFarm

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E-Classic 2400 rear doors blown off!
« on: March 26, 2018, 09:53:35 AM »

Saturday night it started getting cold in the house. Sunday morning I went outside and sure enough the fire was out in the boiler, BUT the wood was still in it unburned. I got it going again but then I closed the bypass lever the temp started dropping. When I opened the door, it would take off again. This has happened in the past when my intake tube has gotten packed with creosote but since I added my removable side plates inside the boiler box, I haven’t had hardly any backup but I went to check.
To my surprise, both access doors were lying on the ground, side by side, just as if they’d fallen together off the back of the boiler. This was strange… I checked the intake tube and it was clean, but the solenoid wasn’t opening the cover. Of course I don’t keep a spare solenoid, so I propped it open so it would allow air into the firebox.
I was in the middle of evaporating maple sap so I’d mess with the OWB and then check on the evaporator. Each time I’d come back, the OWB was on the verge of going out. WTH? So I ran it for a while with the bypass lever open for a while. When I came back to check it again the temp was getting there, so I closed the bypass lever. When I did, smoke started coming out from under the roof and out of the back panels, like a lot! Then, right in front of me, both rear doors blew right off of the back of the OWB!!!! Obviously it must have happened before when it went out because the panels were lying there just like I found in the morning. What would possibly cause this????
I opened the bypass and ran the OWB with the door open for 5-10 minutes while I checked back on my evaporator. I came back to the OWB, closed the door, closed the bypass, and it ran fine the rest of the day and all last night!
I don’t know who to talk to as just this Friday we received a letter in the mail saying the place we purchased our OWB from was no longer a Central Boiler dealer and to go on line to find another one.
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Roger2561

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Re: E-Classic 2400 rear doors blown off!
« Reply #1 on: March 26, 2018, 11:03:15 AM »

Saturday night it started getting cold in the house. Sunday morning I went outside and sure enough the fire was out in the boiler, BUT the wood was still in it unburned. I got it going again but then I closed the bypass lever the temp started dropping. When I opened the door, it would take off again. This has happened in the past when my intake tube has gotten packed with creosote but since I added my removable side plates inside the boiler box, I haven’t had hardly any backup but I went to check.
To my surprise, both access doors were lying on the ground, side by side, just as if they’d fallen together off the back of the boiler. This was strange… I checked the intake tube and it was clean, but the solenoid wasn’t opening the cover. Of course I don’t keep a spare solenoid, so I propped it open so it would allow air into the firebox.
I was in the middle of evaporating maple sap so I’d mess with the OWB and then check on the evaporator. Each time I’d come back, the OWB was on the verge of going out. WTH? So I ran it for a while with the bypass lever open for a while. When I came back to check it again the temp was getting there, so I closed the bypass lever. When I did, smoke started coming out from under the roof and out of the back panels, like a lot! Then, right in front of me, both rear doors blew right off of the back of the OWB!!!! Obviously it must have happened before when it went out because the panels were lying there just like I found in the morning. What would possibly cause this????
I opened the bypass and ran the OWB with the door open for 5-10 minutes while I checked back on my evaporator. I came back to the OWB, closed the door, closed the bypass, and it ran fine the rest of the day and all last night!
I don’t know who to talk to as just this Friday we received a letter in the mail saying the place we purchased our OWB from was no longer a Central Boiler dealer and to go on line to find another one.

Just for giggles, did you remove the end cap off the chimney "T"?  Maybe it's getting plugged and the smoke had no where to go?  I really can't imagine it building up so much pressure to blow the rear panels off but stranger things have happened.  Just a thought.  Roger 
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E Yoder

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Re: E-Classic 2400 rear doors blown off!
« Reply #2 on: March 26, 2018, 11:07:26 AM »

I'm thinking there's a blockage somewhere and it is chuffing/ wood gas explosion. Follow the airflow all the way through.
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RSI

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Re: E-Classic 2400 rear doors blown off!
« Reply #3 on: March 26, 2018, 11:19:50 AM »

I would find out where the smoke was leaking out and make sure it is clear from there all the way out the chimney.
Once you find where the smoke was coming from, I would get that sealed up too. It must have been a wood gas explosion knocking the doors off. Not a good thing to be happening under the sheetmetal. I think that spray foam if flammable so if it ignites would probably destroy the stove.
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Roger2561

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Re: E-Classic 2400 rear doors blown off!
« Reply #4 on: March 30, 2018, 04:57:43 AM »

Have you found the cause for the rear panels blowing off?  I think it's safe to assume I'm not the only one who's curious of what caused it.  Roger
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DeerMeadowFarm

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Re: E-Classic 2400 rear doors blown off!
« Reply #5 on: April 10, 2018, 11:16:41 AM »

Not really. There is a box(?) where the lower solenoid tube goes into the boiler. The entire bottom of this seems to be gone (rotted, blown out, I'm not sure) I drove by the place where I bought my boiler the other day even though they no longer are a CB dealer) because they have the same model as I do to heat their showroom. Unfortunately the gate was closed and I couldn't get in. I have since heard that the dealership is going bankrupt...
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E Yoder

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Re: E-Classic 2400 rear doors blown off!
« Reply #6 on: April 10, 2018, 12:13:02 PM »

Mild steel/moisture issue rusting it off? The air leak may have caused the explosion.
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