Any help would be great
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  1. #1
    Join Date
    Feb 2006
    Location
    USA
    Posts
    4,381

    Talking

    Today had a call for a goodman furnace. I wanted to check gas pressure during heat demand but did not see any tap for doing so. I did see 2 tiny itty bitty allen screws before & after valve but wasnt sure if this was anything. Is this where i would get a reading ? why so small if so &anyone know the thread size so i can buy proper fitting to check

  2. #2
    Join Date
    Sep 2003
    Posts
    1,311
    It must have been with the Gemini valve. If so then there are nipples with what look like set screws in them. To check the gas pressure you loosen the screw about 2 turns and then push the manometer tube over the nipple. Using 1/4" surgical tubing works ok.

  3. #3
    Join Date
    Feb 2006
    Location
    USA
    Posts
    4,381
    thank u .. i will see if it is the same as u refer to

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