Modcon Boiler Service Time (Pic)

Rob Blair

Paul,

Here are two that I just cleaned out in a painting/sandblasting shop. I may have to look into some kind of filter system. My mistake was waiting two years. I was going by what they said on the Trinity manual. Definitely will be every year now. Glad I had a grocery store card that I did not need. I will have to keep those cards that you get in the mail just for this job.

The first one is a Trinity 150, the second is the card between the coils, and the third is the Trinity 200. They were both combustion tested and draw the same air.

Rob

Paul Rohrs_4

Don[t think you need to clean and service modcons? Think Again!

We have infloor heat at our shop and this Peerless Pinnacle is in its 4th year of duty. We clean it EVERY YEAR prior to heating season and have no issues.

Here is a picture of the combustion chamber prior to cleaning. It is the worst I have ever seen of any boilers we have installed. There is a shop next to us with a wood burner and we think our boiler intake is drawing from his particulate laden exhaust.

Ready for another heating season.

Regards,

PR

J.C.A._3

Hey Paul....

Do you use the boiler to make hot water?

I'm thinking not...because SURLY you would have a plugged boiler trap from all that crap.

I've been on 3 calls this week for a similar product, and am finding them easier to work on daily. (This week anyway!)

No slam here. I'm actually finding that they aren't the service nightmares that I see described here, for the most part....IF THE MANUAL WAS USED FOR SOMETHING OTHER THAN A KNEE REST. Chris

Paul Rohrs_7

Space heating only

It was set up properly with a combustion analyzer and other than replacing the target wall, it still has all of it's original components.

MJ was at the helm of the this boiler cleaning even after flushing the trap there was some really fine sediment.


Paul

Glenn Sossin_2

Cleaning

Paul

Thanks for those great pics. It hopefully will spur some mechanics to do the yearly maintenance that they are supposed to.

What I would love to see, is what the interior of the coil looks like after a few years of use - un-treated and treated alike.

Have you ever been called in to service or replace an exchanger because someone did not do annual cleaning, flushing, water PH treatment etc where the exchanger/unit had to be scrapped? I'd love to see what the interior of the coil looks like - where the water flows?

Rhomar should see a nice bump in business once the trades understand what is going on inside these modcons.

Thanks again

My $.02
Glenn

Darin Cook_8

Paul

That heat exchanger design (and this is not being unfairly critical) seems to be more prone to that king of build-up. I think the best heat exchanger design for staying very clean is the TT Prestige one. It constantly washes itself down. The Munchkin/Prestige exchanger design seems very prone to this regardless of set-up with digital combustion analyzers. A few of the Buderus GB's that I have serviced have had a little crusty build-up on the inside corner edges of the heat exchanger. But that is easily cleaned with some mineral oil put on the exchanger and running the boiler to burn it off.

Darin

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tim smith

Munchkin heat exchanger

We have been cleaning the 5 that we installed over the last 5 years, every year. They need annual service/cleaning. flush out heat exchanger/trap. Suck out with wet dry vac real well. Check combustion etc. We have had 2 failed heat exchangers. Looks like they corroded from combustion side in. Company supplied new boiler rather than heat x, under warranty, no problems. Jury still out on this heat x design in my opinion. It seems to me that the chemical reaction of iron deposits?? inside attaches to stainless and is somewhat corrosive to it. Don't know for sure but guessing. These boilers have been reliable other than that if cleaned annualy. Tim

Big Will

with the lack of a gasket for the cover

And the combustion air just stopping at the case this does not surprise me. I wonder what the difference will be with the new case design with the gasket and the buckles. I am surprised they got a sealed combustion rating with the old cover design. I have one at a vets office that looks like a dogs bed under the cover. Its just to easy for air to get through the door. The last time I cleaned it I taped the cover on to see how the heat exchanger would look after a year of actual outside air. You don't see Knights like this very often and the heat exchanger is the same design but the combustion air is a solid connection.

Paul Rohrs_4

Darin

I hope all is well with the newlyweds.

What is the condensate trap like for the Prestige? Is the thinking that if the condensate falls from the top and "Self-Cleans" the HX, any sediment will be washed out along with it? Impurities in the make-up air are universal and do not discriminate by boiler type. What is the recommended service cycle for the prestige?

Regards,

PR

Wayco Wayne_2

Remember

the glo-core boiler with the air filter on the inlet for combustion air? Seems there might be a market for such a device. It would be easy to make using car air filters and holders. It seems it would help. WW

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Magnehelic

Because of You!!!

Thanks for posting these pics. This is the identical hx to the Knight that we represent. This fall I am personally (what me? get in a truck and go out??? NO WAY!!!....yes way) go out and inspect all of our Knight installs, and we have a bunch!! Thanks again!

Don

Glenn Sossin_2

Gianonni makes the coil

They have an impressive website but I agree, I think a flawed design.

I believe this is also the same exchgr in the NTI trinity. I have to give them credit - they are the only mfg I'm aware of that shows you what you need to do in detail and provide photos.


http://www.giannoni.fr/


Also attached page from Prestige manual on cleaning. All the mod-cons seem to have the same type of maintenance requirements.

One big difference for the Prestige, it has multiple wide pathways for water flow around the flue gas baffles. I can't ever envision this exchanger plugging up. Maybe the burner getting crap on the screen from construction dust, but not the exchanger.

My $.02
Glenn

Paul Pollets

Labor??

Tim, were you reimbursed for your labor costs for changing out the 2 boilers with failed HX? Just curious...

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tim smith

Labor $$, what's that. Are you kidding Paul