Gas boiler flame roll out switch


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Old 03-02-15, 04:39 PM
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Gas boiler flame roll out switch

i have a Peerless Series MI Residential Gas Boiler.
the boiler shut off on saturday. i noticed that the flame roll out switch [ceramic with a resistor] was tripped and some soot on the floor where the burners are. i replaced it and turned the boiler on again. the flames were coming towards it so it tripped again. i thought it was the gas/pilot valve
[ honeywell VR8200A2116 ] so i went and replaced it [ they gave me a honeywell vr8200a2132 ]. the same issue still exists. i had to go and set the open close valve of the gas line to almost completely closed in order to operate my boiler. the flame is blue and its taking longer for the boiler to heat up the water. i do not know what could be wrong .
how can i troubleshoot the issue ???
what is causing too much flame and the soot ???
what can i do to fix my issue???
 
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Old 03-02-15, 04:45 PM
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I moved your thread to the boiler forums.

You cannot run the boiler with the gas turned down. Usually a blockage in the flue is what causes flame roll out. Do you have an electric damper in the flue to your boiler ?

Can you take a few pictures of your installation and post them here ?
http://www.doityourself.com/forum/el...rt-images.html
 
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Old 03-02-15, 04:48 PM
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Is the pilot flame near enough to the burner to ignite it if gas piles up in front that can cause the flame to roll out,post some pics of the front of the boiler so we can have a look. Check this links troubleshooting section.
http://s3.supplyhouse.com/product_fi...14-install.pdf
Geo
 
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Old 03-02-15, 04:53 PM
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Hi TCB,

PLEASE! do NOT operate the boiler with the gas valve closed down!

Your boiler is suffering from inadequate DRAFT.

Either the chimney, flue pipe, or the heat exchanger in the boiler are BLOCKED. (perhaps a problem with the damper that PJ mentioned. There were some a few years back that were RECALLED by Effikal because the boiler could fire with the damper CLOSED, and this will KILL YOU!)

You are flirting with death. CO is a SILENT KILLER.

what can i do to fix my issue???
This is SERIOUS, I feel that it's best at this point to tell you to call an experienced technician.
 
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Old 03-02-15, 05:15 PM
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Old 03-02-15, 05:20 PM
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The damper I was referring to is circled in blue.

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This is Troopers forums..... he has recommended professional help so please keep that in mind.
 
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Old 03-02-15, 05:24 PM
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that damper is open. i physically checked
 
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Old 03-02-15, 05:31 PM
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At what point did that damper motor change from BLUE to BLACK?

 
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Old 03-02-15, 05:33 PM
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Is that flue pipe all the same diameter (no reduction) and where does it go when it goes out of sight?
That looks like only single wall flue pipe which means it can't be run directly next to a flammable product.

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Old 03-02-15, 05:37 PM
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i lost the blue cover so i used an old one
 
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Old 03-02-15, 05:39 PM
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Jon, the way the front of the boiler is discolored from heat is not something that has just occurred. There has been a draft problem for quite a while there.

Something else that is pretty scary to me is this:



National Fire Protection codes state that there must be 18" MINIMUM clearance from a single wall flue pipe to any combustible material. I don't see that there...

How far up into that cubby does that pipe go?

Unless you are willing and able to learn how to disassemble the boiler for access to the heat exchanger for inspection, and to buy a good SOOT VAC (EXPENSIVE!) because if you use a regular vac you will have soot all over the house, AND to pull the flue pipe to the chimney, AND to inspect the chimney for blockage, then as I said earlier, you need to call someone.

You must NOT run that boiler until you get this problem fixed!

You could either DIE, or BURN THE PLACE DOWN.
 
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Old 03-02-15, 06:09 PM
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i turned off the boiler as soon as you posted it NJ Trooper , i turned it back on to take the flame pics and turned right back off.
i started taking apart the boiler and took some pics.
http://i261.photobucket.com/albums/i...302_195719.jpg
http://i261.photobucket.com/albums/i...302_195716.jpg
http://i261.photobucket.com/albums/i...302_195713.jpg

as these pics show i have more soot than i thought. had to wash my hands vigorously after i touched it. this is the first time ive had to deal with this issue?
does this mean i just need to have someone clean the soot?
how much would they charge for that?
is this the root cause of the flame out ?
how do i describe this to the repair man?
 
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Old 03-02-15, 07:45 PM
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does this mean i just need to have someone clean the soot?
Well... yes, good grief that boiler is almost completely plugged up!

I bet if you put a bright light on top of the burners you would hardly see any light on top.

That heat exchanger should be nearly completely open, top to bottom.

You may have a difficult time finding someone that is willing to do the job....

Tell the repairman that the flame rollout tripped, twice, and you took the top off and the boiler is nearly completely plugged up.

I can't help but think that there's a REASON that it got this plugged up. It generally does not happen with gas boilers like this. You may have a problem that the burner is not getting adequate combustion air.

Is this boiler in a closed closet with no source of combustion air?


I'm still very concerned about that flue pipe too... it appears to me to be a fire hazard.
 
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Old 03-02-15, 08:12 PM
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yes , the boiler is in a closet. ive been living here for about 8 years and i never cleaned anything inside this boiler
 
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Old 03-02-15, 08:18 PM
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how much time would it take for the boiler to get that dirty ???
 
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Old 03-02-15, 08:21 PM
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Probably years I would guess.
 
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Old 03-02-15, 08:23 PM
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the boiler is in a closet
With a solid door? No vent grill cut into it?

How 'tight' is your home? I wonder even if there was a large enough grill installed on the door if there would even then be enough combustion air.

I presume that all the units in your building are the same way? I should think they're ALL having problems and don't know it yet.
 
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Old 03-02-15, 08:25 PM
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thank you for helping me.
im trying to find a honest , reliable , reasonably priced repair man in the bx NYC.
not gonna be easy..
 
 

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