Cleaning a plugged aluminum block boiler

HydroBob

Any suggestions on how to clean a plugged ECR UB-200 aluminum block? Spraying mineral oil 7 times did not work well. Utica said not to fire boiler with mineral oil on the block.

HVACNUT

1- who said use mineral oil?
2- why is it plugged? Cleaning is temporary if it's not firing correctly.
3- when was the last time it was serviced by a qualified tech?
4- who said use mineral oil?

pecmsg

HVACNUT said:

1- who said use mineral oil?

2- why is it plugged? Cleaning is temporary if it's not firing correctly.

3- when was the last time it was serviced by a qualified tech?

4- who said use mineral oil?

EBEBRATT-Ed

Bosch/Buderus says to use mineral oil to clean their HXs.

I thought you were supposed to let it burn off

pecmsg

> @EBEBRATT-Ed said:
> Bosch/Buderus says to use mineral oil to clean their HXs.
>
> I thought you were supposed to let it burn off

Now I have to look that up. Wasn’t aware!

Alan (California Radiant) Forbes

EBEBRATT-Ed said:

Bosch/Buderus says to use mineral oil to clean their HXs.

I thought you were supposed to let it burn off

https://www.youtube.com/watch?v=fZTu37sEELg&list=PLq4NGiyqj85YbH1rMZ1lfRFwEj4kkmFxb&index=5&t=3s

The mineral oil part starts at about 3 minutes in.

Sorry to get off topic.

pecmsg

> @Alan (California Radiant) Forbes said:
> (Quote)
> https://www.youtube.com/watch?v=fZTu37sEELg&list=PLq4NGiyqj85YbH1rMZ1lfRFwEj4kkmFxb&index=5&t=3s
>
> The mineral oil part starts at about 3 minutes in.
>
> Sorry to get off topic.

Always willing to learn!

SuperTech

Yes, thank you for posting that information. I don't come across very many aluminium Buderus boilers. I wouldn't have thought that mineral oil would aid in cleaning the heat exchanger. Learning surprising information like that is why I come here, and a big part of what makes this site great.

HVACNUT

Apologies are in order. You learn something new every day.
I still stand on 2 and 3 though.

DZoro

I believe fernox makes a cleaner for aluminum boilers.

EBEBRATT-Ed

Where I previously worked I installed a bunch of these. Never had to clean one though but I herd about it. Their nice boilers if you don't mind aluminum HXs.

@HydroBob

How does Utica recommend cleaning it??

kcopp

Axiom has some good stuff... wear a respirator though.

FW Webb is now carrying it.

http://axiomind.sasktelwebhosting.com/pdf/AXI-THERM CLEAN_F9-AL.pdf

ThomasM84

Insist with mineral oil, it doesn't make sense for this solution not to work.

unclejohn

@EBEBRATT-Ed With a water hose through the hole where the igniter was.