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Leaking gas valve on 4yr old Triangle Tube

in Gas Heating
Hi all, I just had my Triangle Tube 110 solo boiler serviced and the tech noticed the smell and put a device that detects gas up inside the intake and it beeped pretty fast. He believes that the gas valve is bad and needs to be replaced. Are gas valves prone to fail in only 4years of service? Things to check before replacing? thanks in advance
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Comments
numbers:
O2ref 3.0%
CO2 max 13.8%
104.5 deg temp stack
11.36% CO2
95% eff gross
105 ppmCO
3.7% Oxyegen
19.6% excess air
61.7 ambient temp
That may be what set the detector off: residual unburned fuel in the flue.
You can choose to do what you want, but you cannot choose the consequences.
Try snugging them up and see if the problem goes away.
I agree that everything about the combustion tests indicates that the boiler is running rich.
The analyzer only measures O2 and CO, the rest is calculated by the machine.
The O2 number looks fine. The CO is high. Should have been leaned out a bit.
Not sure why he left it with the CO above 100...
Albert Einstein
He said he would do another combustion test after putting in the new gas valve. As far as the propane, you can smell it when you put your nose up close to the intake.
Yes sorry, it's propane
You can only smell propane if you put your nose up to the opening of the intake, I too thought it was just residual smell from the burn but it sure smells like a leak now. I also noticed a black residue on the elbow of the intake.
So is it possible to have that smell on a rich running boiler or is it running rich due to a faulty valve? In other words, will adjusting the CO2 in spec make the smell go away? Thanks in advance.
Not sure about the gas smell in the intake, but something tells me a new gas valve will still give the same results.
Rick
Not sure but the first stage was 7.5" according to our new gas company that did an appliance and tank check.
The reason I mention this, is that the detriorated plastic has a very potent odor to it. Not sure if it would set off a combustible gas detector or not, but maybe @Tim McElwain could shed some light on that?
Just a thought, something else to check.
7.5" is too low for LP, you need 10" as Tim says.
Gas detectors can be sensitive to a lot of things, I have seen them react with pipe dope.