burner question

robert norton

peerless and utica would always do this if gas pressure at outlet of gasvalve was not 3.5wc your talking about a burn at venturi not a delay right

Steve_23

How, typically are the air shutters adjusted on a burner?
Once in awhile I noticed one burner tube igniting gas at the air shutter and making a whistling sound, combustion is maitained in the tube, but any input on adjustmeant?

Jim_47

Noisy burner

Steve
Give the team at the wall here, (TEAM Wallies) a little more to go on. Gas or Oil, New or Old, chimney or direct vent, Mfg and model. Then draft and CO measurements are a must. If you do not have the equipment to take the measurments then don't make any adjustments. Just like in surgery an ooppps here could mean death or injury.
Had a nurse tell me once that she is a professional, if she makes a mistake someone could die. I told her I must be a super proffesional being a burner tech. If I make a mistake I could wipe out an entire apartment house full of people or maybe that little catholic school full of kiddies with the old boiler. Its not rocket science, but we can launch a water heater just like a rocket.

Steamhead

You need to get that fixed RIGHT AWAY!

That sounds like a gas burner blowing back or otherwise burning the gas right at the orifice. Shut the boiler down and call for service immediately- I'm not kidding. It could explode or set the house on fire if not corrected! Try the Find a Contractor page of this site if you're not sure who to call.

To Learn More About This Contractor, Click Here to Visit Their Ad in "Find A Contractor"

Unknown

This could happen with

any brand of boiler if the conditions are there to make it happen. The cause of this could be any number of things from improper gas pressure, poor draft, plugged heat exchanger, plugged burners, lack of available combustion air....etc. I have seen it happen more often than not with LP gas than with natural. Whatever the cause, it should be addressed by a professional as soon as humanly possible. Hope this helps.

Glenn Stanton

Steve_23

specs on boiler..

The boiler in question is:
Slant Fin
model: GXH-1902
fuel: propane
input: 189,000 btu
chimney vent
age of boiler: approx 10 yrs
system: one pipe

Unknown

Some things to check for

First, Slant/Fin can be reached at 800 873 4346.

Second, the inlet gas pressure on the house piping side of the gas valve should be at or above 11" WC with the burners running, with all appliances on the same gas supply running at the same time.

The outlet pressure should be set at 9.5" WC with a manometer.

The air shutters should be closed to a point that yellow tips show above the flames, AND THEN OPENED JUST TILL THE YELLOW GOES BACK TO BLUE. Open more than that will give a lean mixture, which can burn back at the orifices.

At this point, the boiler should be checked in the sections for sooting, or other blockages. The chimney should be checked to be sure it works to specs. The make-up air supply should be verified.

Please call if you have any other questions.

Noel Murdough
Slant/Fin

Duncan_6

Ten years old?

Time for a thorough checkout and a thorough cleaning of burners inside and out (for starters). Heat exchanger sections, too. Propane can carbon up and completely block boiler passageways.

Should be checked for overall system operation as well as boiler operation. On the combustion side: Adequate combustion air supply, clear chimney (should be B vent), smooth lightoff, gas pressure in and out of gas control, draft, combustion efficiency, proper operation of safety devices... What did I leave out?

These things need to be checked by a knowledgeable, experienced technician with an eye trained to catch something that's not quite right, with the proper tools that measure what's actually going on: things that can't be seen with the eye.

It could also be something as simple as a blocked burner tube. Spider webs or dead moths come to mind.

Get it checked by a pro, don't mess with it if you don't know what you're doing. Gotta go... time to get back to playing with an unexploded bomb I have in my basement.