Problems with gas valve??

ysh

Approximately once every 2 weeks my boiler flames making loud whining sound and flames appear larger than usual. Could it be gas valve putting out more gas than needed?

If not, what could be the issue?

Here is the picture of the noisy flame. You can see flame inside the tube.

And this is normal flame

Jamie Hall

More likely the regulator than the gas valve itself. You really need to have someone check the gas pressures coming into the house and before and after the regulator and at the gas valve to make sure they are correct.

JUGHNE

You can see fire inside the burner tubes in the first pictures.

Check pressure and clean burners, especially gas jets.

mattmia2

also make sure the burners aren't clogged with any debris like a spider web and aren't disintegrating. After cleaning the burners and checking the gas pressures, a combustion analysis would be a great idea.

Also watch the burners when the blower comes on, they shouldn't change or move when that happens, if it does the hx is compromised.

HVACNUT

Huh, so that's what they call a fire tube boiler. Cool.

ysh

Here is the video

https://youtu.be/nZ-juIxmeEA?si=fV_klV9zgT4q3XDl%20

Jamie Hall

gas pressure is off.

ysh

https://forum.heatinghelp.com/discussion/comment/1819580#Comment_1819580

are you saying there is not enough gas pressure? it happens really infrequently. is the gas valve a problem?

delcrossv

More likely the regulator. But check both.