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  1. #27
    Join Date
    Jul 2008
    Location
    Rochester NY
    Posts
    4,702
    Being you are the guy with the mishmash of good and bad stuff, (and are looking to solve a problem,) you aren't qualified to agree or disagree, just to give more details so the qualified guys can use that information to HELP YOU AVOID SCREWING MORE THINGS UP, FOR FREE.
    Which makes more sense to you?
    CONSERVATION - turning your thermostat back and being uncomfortable. Maybe saving 5-10%
    ENERGY EFFICIENCY - leaving your thermostat where everyone is comfortable. Saving 30-70%

    DO THE NUMBERS! Step on a HOMESCALE.
    What is comfort? Well, it AIN'T just TEMPERATURE!

    Energy Obese? An audit is the next step - go to BPI.org, or RESNET, and find an auditor near you.

  2. #28
    Join Date
    Oct 2008
    Location
    mid-Tennessee
    Posts
    703
    Any appliance with a combination valve (like a water heater) or a simple pilot safety valve (like an oven design rarely found in residential homes) are rated to a maximum of 1/2 psi incoming gas pressure. Same for standard gas supply line regulators.

    Raising your pressure to 11"WC would be acceptable, but any more would be pushing the limits of each gas control and regulator. Conversion of 1/2 psi to inches water column equals 13.8'WC.

    Your adjusted supply gas pressure should be read AT or NEAR the source and at each appliance in question, NOT at the pool. If you still don't get desired pressure to the pool, time for some serious pipe size upgrades and such.

    Your inquiry is concern for the appliances in the house.

    Each appliances SETUP needs to be inspected to ensure there IS a gas regulator rated for 1/2 psi at each and ADJUSTED to that manufacturer's specified operating pressure. Combination valves and line regulators provide that. SOME appliances may have NEITHER and should therefore have a line regulator installed. Items such as your gas grill may not have a regulator yet and jacking it's pressure to 11" without one IS NOT recommended. Usually there would be a line regulator dedicated to each appliance needing one. Combination valves are built into the appliance while line regulators are...just that, added by an appliance installer if he knows what he's doing.

    The other concern is gas VOLUME. There are charts developed for this concern to determine proper gas supply line plumbing size to assure adequate gas volume, which may may be critical to a gas heat appliance for proper heat generation. Some burner designs, like a furnace, are monitored by an electronic ignition source and will lock out if not satisfied. You may have the pressure to the pool heater but lack in gas volume to achieve specified BTU generation. A 300,000 btu requires allotta gas to work properly.

    With all considered, after raising the gas pressure you will want EVERYTHING tested for proper sustained pressure and operation through all stages of each appliance's operation WITH ALL APPLIANCES RUNNING simultaneously to determine the strain that pool heater will put on your gas supply and how THAT affects your appliances. You MAY encounter some issues in some of your appliance's operation down the road if there's too much gas supply demand with the inadequately sized pipes delivering it. Then you're back asking questions again and, at that point, need to consult with a licensed plumber.

    With all that said, raising the pressure is experimental - with hopes that doing so will get that pool heater going. Before doing so, I REITERATE, have each appliance configuration inspected to ensure there's a dedicated pressure regulator (combi valve or line regulator). AFTER raising the pressure, ALL standing pilots also need to be checked and adjusted.
    ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° °

    "You never know what others don't know." -

  3. #29

    huh?

    This is the Ask Our Pro's forum, and only Pro members that have been vetted by the AOPC may post advise here. Please apply to the AOPC today, thank you.

    You can find the rules for posting and qualifications here.

    Further infractions may result in loss of posting privileges.
    Last edited by beenthere; 08-02-2012 at 07:19 PM. Reason: Non Pro * Member

  4. #30
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    67,763
    godzillapimpin, this is the Ask Our Pro's forum, and only Pro members that have been vetted by the AOPC may post advise here. Please apply to the AOPC today, thank you.

    You can find the rules for posting and qualifications here.

    Your post has been deleted.
    Further infractions may result in loss of posting privileges.
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