Triangle Tube Challenger Cleaning

Alan (California Radiant) Forbes

I've never had to take one of these apart before. My customer was getting an E4 (no flame signal) error message. The burner would ignite, but then immediately extinguish. After 4 or 5 tries, error out. Checked combustion air, gas pressure, etc. and it all checked out. The last thing to do was open up the boiler and check the fire side for any problems.

Before and after pictures of the combustion side. It was all clogged up with years of combustion muck, some of which was as hard as concrete. Eventually with all the buildup, air could not pass and combustion could not be sustained.

Tim McElwain

Needs service every year!

DanHolohan

Looks like a beehive. 

JUGHNE

Beehive.....exactly.

kcopp

Was that LP gas?
They clean pretty well usually but the LP ones generally are dirtier.
Make sure they HX gasket is in good shape.
IBC/ Intergas has a tool that makes the clean up of really hard stuff simpler.

hot_rod

Clean intake air?

Alan (California Radiant) Forbes

@kcopp NG. I want one of those tools!  It was not an easy job and took a long time. Thanks for the heads-up. 

@hot_rod Yes, short and sweet. 

kcopp

https://intergasstore.co.uk/shop/ols/products/intergas-exchanger-service-tool

I got mine from a friend in the UK.