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Leisole2

Leisole2

Joined on October 29, 2013

Last Post on November 21, 2013

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Cleaning

@ November 21, 2013 4:44 PM in Knight boiler problems

Sorry I didn't get back to you. I had to go out of town for a few weeks. I have a 16' waterproof USB camera I use for plumbing issues. I will go back and clean it again on a warm day with CLR.

The boiler is nominal as of now, but the reroute of the vents did not go well. We had high winds last week, and I came home to a downed tree limb that knocked off the new vent.

We will be repairing that this week.

Cleaning

@ November 7, 2013 2:54 PM in Knight boiler problems

I used a silicon knife and followed all of the gaps twice; once after the second vacuuming and one after the flush. I used only water under hand pump pressurization for the flush. I also rechecked the whole system using an inspection cam i have, inlcuding the condensate line. Lastly, I vacuumed one more time with a nylon ended slot brush.

I hope I was fairly thorough, but I am more cognizant now of the potential problems.

Thanks!

Current Status

@ November 7, 2013 1:39 AM in Knight boiler problems

The new fan has been installed and the system is working. I was not here for it, but the new pro checked out the burner and said it was fine and the cleaning I did was pretty thorough, but he says the burner and HX may not last nearly as long as it should due to the junk in the HX and on the burner. I watched it through several cycles and it seems to be performing fairly close to our previous nominal state.

I'm not sure he is a part of this site.

@ November 5, 2013 10:13 PM in Knight boiler problems

I never asked. I'll ask him when comes back.

Could I take the burner out and test it

@ November 5, 2013 4:51 PM in Knight boiler problems

Could I disassemble the air arm, remove the burner unit, unhook the ignition and test it, or am I asking for trouble?

The parts and labor have now added up nearly to the cost of the boiler!

Pics of blower, burner, HX

@ November 4, 2013 11:56 PM in Knight boiler problems

I've posted some extra pics of the blower, burner, HX and exhaust as requested

Cleaning

@ November 4, 2013 11:44 AM in Knight boiler problems

I will post a few pics tonight with hopefully a fairly detailed look throughout the system. I need to take the front plate off and find my snake cam.

Yes.

@ November 3, 2013 7:44 PM in Knight boiler problems

I did them off my phone and they flip for some bloody reason.

I wasn't there

@ November 3, 2013 6:09 PM in Knight boiler problems

I wasn't there for the cleanings. I assumed he knew what he was doing. Now I'm worried he hasn't done the combustion analysis in years.

Current status

@ November 3, 2013 6:05 PM in Knight boiler problems

We did a full cleaning of the boiler (after the fact). We put the whole system back together again, but the fan still did not work. We have a fan currently on order, should be here early this week. Before they started to work on the termination ends I got another picture. They were definitely not correct.

Current status

@ November 3, 2013 6:05 PM in Knight boiler problems

We did a full cleaning of the boiler (after the fact). We put the whole system back together again, but the fan still did not work. We have a fan currently on order, should be here early this week. Before they started to work on the termination ends I got another picture. They were definitely not correct.

Oops, double post

@ November 1, 2013 11:20 AM in Knight boiler problems

Nothing to see here...

Sorry I did not get back

@ November 1, 2013 11:20 AM in Knight boiler problems

We had a huge storm com through last night. Had to prep everything.

The covers had been taken off to check for obstructions. These are typical 1/4" grate covers. At this time, we are repiping the intake for better separation.

There are no blockages within the piping system or the Boiler. We have run tests (with the ten seconds we have before Lockout) to confirm no blockages within the boiler itself as well. The condensate pipe is clear. The only major thing we found was the inordinate amount of debris in the HX.

At this point, we are waiting on the fan to come in and crossing our fingers that works.

I will get better pictures today.

Thanks for all of your help, this has been great!

Thread

@ October 31, 2013 8:49 AM in Knight boiler problems

Thanks for the link. I was looking around for something like that.

Which termination are you referring to?

@ October 31, 2013 8:47 AM in Knight boiler problems

I'm not sure which termination you are referring to in your comment. We had most of the upper electrical unplugged since we replaced the controller board. The fan should be in soon.

That's the other weird thing. After we pulled the fan, i checked it thoroughly, and can't for the life of me figure out why the fan is defective. The speed seems correct, and there are no apparent flaws on the board, let alone the fan speed readings are the same as when the boiler was operating nominally.

Back to your question, I can get better pictures if you like. Just tell me what you would want to see.

Separation of the Intake/Exhaust.

@ October 31, 2013 8:35 AM in Knight boiler problems

We are replumbing the Intake vent for better separation. The exhaust is our critical factor there due to the space outside and rise/run space issues in the house.

Thanks!

@ October 31, 2013 8:32 AM in Knight boiler problems

Sorry I did not get back last night on this. I've talked to another pro who is taking a look at it. The "mouse turds" seem to be very common. Thanks for the link.

Really?

@ October 30, 2013 11:42 AM in Knight boiler problems

That's the first I've heard of that. I'm not sure of the grade of Stainless they use, but that becomes a big worry.

Usually stainless pitting happens after aluminum pitting, due to the fact both create an oxide layer for protection. Aluminum Oxide has a higher dissociation strength, but tends to be less pervasive than Chromium (the Stainless in stainless steel) as most forged materials tend to have more impurities than highly processed alloys like stainless. Though the debris does have the brown look of iron oxide.

Still have the junk

@ October 30, 2013 1:00 AM in Knight boiler problems

I did not vacuum it out so I could show it to another pro.

Worries

@ October 30, 2013 12:32 AM in Knight boiler problems

I thought the consistency in size and color of the debris looked like a single contaminant but here is a shot of the outdoor intake/ exhaust vents. They are closer than I remembered.

Intake/out lines

@ October 30, 2013 12:13 AM in Knight boiler problems

The exhaust was detached to do a airflow test. It is a side exhaust with about a 6.5 ft rise

Combustion check

@ October 29, 2013 11:59 PM in Knight boiler problems

There was a combustion analysis when the system was installed, and one a few weeks later, but not one since. Most of the other aluminum parts are not pitted, so I didn't think we were getting the corrosive effects from a bad burn cycle. We won't be able to get one done until we are out of lockout. My worry is that all of this rust may be effecting the airflow, subsequently causing the fan speed problem.
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