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Thread: Natural Gas question

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    Natural Gas question

    I want to istall a Raypak 336 natural gas heater. I checked the sizing and it exactly what I need for my inground pool. My problem if I do have one is that I currently have natural gas running into my garage that I use to heat it in the winter. My pump room is a room just off the garage. The line is a 63 foot underground line that is 1 inch. it then goes to a 50 foot section in the garage itself that is also 1 inch. Do I have a large enough line to handle the 336? if not what options do I have, dig it up to a larger line or can I do a two stage? Any help would be appreciated.

    22yr pool owner, 21 yrs Baquacil, installed SWG 2009 - (22000 gal Vinyl In-ground pool)(Pool Pilot DG-220 SWG)(Hayward S244T Sand Filter 3.1 sq ft area 20 gpm)(Hayward SP2607X10 1hp pump)

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    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Tucson, AZ

    Re: Natural Gas question

    Where you been for 5 years?

    That does not sound big enough to me. There are calculators for pipe sizing here:

    I have a 3/4" pipe that feeds the house (which I think is too small, but everything seems to work) and then a 1 1/4" (or larger, not sure) pipe from the meter to just the pool heater.
    Jason, TFP Moderator
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    Join Date
    Aug 2013

    Re: Natural Gas question

    Likely not big enough. I would ask to get a 2 psi system, then have a regulator on the end to bring it down to standard pressure.

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