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Old 04-12-2012, 07:27 AM   #16
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Just unscrew your flex connector where it enters the furnace and turn the valve on and enjoy the aroma. Then you'll know you have gas.


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Old 04-12-2012, 09:54 AM   #17
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My water manometer shows about 9” WC when screwed into the inlet side of the gas valve.

I don't get the flex connecter conversation here. Just what do you think the manometer is measuring downstream of the flex connecter?

Last edited by how; 04-12-2012 at 09:58 AM.
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Old 07-26-2012, 10:31 AM   #18
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Gas valve regulator requires adjusting to allow flow through the gas valve OR gas valve may be air locked..disassemble to vent diaphragm and reassemble..had this happen to me on a boiler start up for a school..boiler equipped with 2 inch gas regulator but it would not allow gas flow..took it all apart to look for blockage or defects but did not find any..reassembled and all worked fine..OR you have a defective gas valve that is bound or seized and will not open even though you hear the solenoid click.. Let us know how you make out. Good luck!
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Old 07-27-2012, 07:01 PM   #19
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One of your springs is plrobably messed. Ensure you have the valve wired correctly. Do you have a part number or picture for the valve? There is also a pilot flame adjustment screw, make sure that is adjusted so you get enough gas.

How much manifold pressure does the unit require. 9" sounds a bit low IMHO for lp pressure. Take a lighter to the pilot as well, sometimes the spark igniter still sparks but isn't hot enough or in the right place.
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Old 07-28-2012, 05:38 AM   #20
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There is also a pilot flame adjustment screw, make sure that is adjusted so you get enough gas.
On a 95% furnace with an ignitor? I don't think so ...


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