Help with direct fired automation 1.5 bbl system

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bjhu7642

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I'm looking for help in figuring out how to automate my 1.5 bbl propane fired system. I'm using BG14 burners with 30 psi regulator. I have a PID temperature controller to activate the gas valve, but I haven't had success getting auto-ignition to work reliably.

Attempts so far:
* pilot light - blows out when the valve is shutoff
* 12v hot surface igniter - worked for a few minutes, but the longer it ran, the less reliable the auto-ignition.

Any ideas would be appreciated.

Brad
 
What gas valves do you have? If you want to use piloted valves, they should have a specific pilot light gas path so that the pilot stays lit. Or you can main line the pilot and put in a dedicated gas shutoff valve (maybe a needle valve). Pilots are nice but not if you brew outside, where wind can blow them out. I have had success with spark ignition systems.
 
I used your second option, separate line with needle valve but when the AFC 195 valve shuts off the resultant "poof" snuffs out the pilot. I can't use standard HVAC control valves due to the 30 psi need. Tell me more about how you set up the direct spark.
 
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