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Thread: Need help disconnecting natural gas heater

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    Need help disconnecting natural gas heater

    So, just as I was starting to consider heating options for next season (and cringing at the up front cost!), I come across a Hayward H-200 heater for $25! It is about 12 years old, neighbor says he has not turned it on in 3 years since they do not use the pool much anymore (kids grown) but it worked fine last time he did fire it up. I'm sure it needs some work, and I guess it could be dead, but first things first. I need to disconnect it myself.

    It is no longer plumbed to the pool, just the gas line. Here is a picture. I checked the manual online but want to make sure I have things right. I assume the pipe to the left of elbow just screws right into the side of the unit, so I just unscrew that remove the elbow and cap what is poking up? He did say that the supply line has been turned off at the source, but I think capping it still makes good sense.

    What tool would I use to unscrew the pipe going into the unit? A vice grip? I forgot to peak inside to see if it is actually fitted or just a cylinder. Or do I need to remove the panel to properly access?

    Anything else I need to consider?
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    Dedicated TFPer since 2012 with recommended test kit
    Above ground, 30 foot round pool, 21,000 gallons
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    Installed in 2006? (just a guess, pool came with house I purchased in June 2012)

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    Re: Need help disconnecting natural gas heater

    Hopefully on the inside of the unit, the gas line has a union. If not, then maybe the nipple going out of the 90 and in to the unit is a left right connector.

    You'll need a pipe wrench


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    Re: Need help disconnecting natural gas heater

    sometimes gas pipe can be really stuck together, don't worry though it's not like PVC you can really use a lot of strength on it.
    -Kevin
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    Re: Need help disconnecting natural gas heater

    If there is no union inside the heater to unscrew, then you are left with having to cut the pipe. Many times installers put the pipe in starting from the heater end and don't install a union until the get to the main feed line. So, if in fact there is no union by the heater or inside the unit, you will need to cut the pipe. Triple check to make sure the supply of gas it turned off, then using a reciprocating saw and a blade for metal, cut the pipe by the heater.

    Now when you go to install at your pool, make sure to install a union by the heater along with the proper shut off valve.
    Paul
    http://www.gastekservices.com A word of caution: When working with gas and electrical you might want to consider a licensed contractor. Consider the value of your life and others around you. If you would like to provide a review of the help I provided, please use the following link to leave a review. gastek - Google Search,

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    Re: Need help disconnecting natural gas heater

    Open up the heater and look inside where the gas pipe comes in...There should be a union that looks something like this.

    It takes two pipe wrenches to dissasemble these. Also, current plumbing codes do not allow for these to be inside the unit anymore. As far as the unit working, if it ran last time it was used it most likely will be fine. It may need a slight tuneup but, for the most part should be fine.
    Unknown make 18' above ground (bought used in 1999) Sparco sand filter. Hayward 100,000 BTu heater. 2 speed pump

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    Re: Need help disconnecting natural gas heater

    Woha slow down here. First you need to turn off the gas. There should be a valve to shut off the line to the heater. if not you need to shut it off at the service entrance. When you are done you need to cap the end of the pipe and check for leaks. Even if there is a valve you need to cap the abandoned pipe. Best practice is to terminate it at the junction with the rest of the system. Then restart all the other gas appliances. Or call the gas company and have them start them up.

    Most service techs would cut the pipe and cap the riser.

    If you are not confortable working with gas you should pay someone who is to do it.
    22k gallon IG pebblefina, Jandy 1.5 HP VS, Jandy CV Cartridge filter, Fafco solar panels, Polaris 360 supply side cleaner, waterfall

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    Re: Need help disconnecting natural gas heater

    Quote Originally Posted by gwegan
    Woha slow down here. First you need to turn off the gas. There should be a valve to shut off the line to the heater. if not you need to shut it off at the service entrance. When you are done you need to cap the end of the pipe and check for leaks. Even if there is a valve you need to cap the abandoned pipe. Best practice is to terminate it at the junction with the rest of the system. Then restart all the other gas appliances. Or call the gas company and have them start them up.

    Most service techs would cut the pipe and cap the riser.

    If you are not confortable working with gas you should pay someone who is to do it.
    He said it WAS turned off at the source.

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    Re: Need help disconnecting natural gas heater

    dont take this thewrong way but if you are asking how to do this you probably dont need to be doing this yourself ng is not to be messed with
    15x30x54 AG,2HP2SP PUMP 400LB SAND FILTER

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    Re: Need help disconnecting natural gas heater

    Necesary tools 1-2 pipewrenches
    Common sense/good comprehension
    The ability to use common tools
    Nathan
    15x30 gunite 18k gallons Hayward star clear plus 120sqft cart

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    Re: Need help disconnecting natural gas heater

    I believe it's completely illegal for random joes to do gas work around here.
    Maryland
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    Re: Need help disconnecting natural gas heater

    Quote Originally Posted by Soupy
    I believe it's completely illegal for random joes to do gas work around here.
    Hes not looking to do gas work. Read his first post. Hes looking to remove a currently unused gas heater from a line that has already been shut off. Its a simple disconnect.
    Nathan
    15x30 gunite 18k gallons Hayward star clear plus 120sqft cart

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    Re: Need help disconnecting natural gas heater

    Quote Originally Posted by wildwilly1
    dont take this thewrong way but if you are asking how to do this you probably dont need to be doing this yourself ng is not to be messed with
    I concur. A gas leak is nothing to sneeze at.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
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    Re: Need help disconnecting natural gas heater

    Call somebody qualified and run if his name is Larry, Curly, or Moe. I think Shemp retired.
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    Re: Need help disconnecting natural gas heater

    That's funny, woodyp! A former construction boss of mine was Larry, and one of the other workers was nicknamed Moe.......We didn't have a curly!
    15'x48" 4500 gallon Intex pool, buried 1.5 ft. Pac-Fab Dynamo 3/4 hp pump. Hayward S180T sand filter, bought used. Taylor K-2006 test kit. Rocket mass heater based wood fired pool heater.

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    Re: Need help disconnecting natural gas heater

    While disconnecting a gas heater seems like a simple thing, it may be simple... for the correct person. Do you know if the the electrical side of the heater has been addressed?

    Since you are considering moving it to your home. I personally would suggest paying a tech to do the move with the money you save by not buying new heater. Yes, it is going to cost a couple hundred dollars but the knowledge they provide could save two homes from being involved in fires.


    Good luck. Be safe.
    What would happen if the heater was not disconnected correctly? ... or the old circuit is still active?
    -- Guy --
    10K gallons in 21' Round 52 inch wall Aqualeader AG, Hayward Power Flow LX 1.5 HP pump motor, Hayward Perflex EC50AC DE filter w/Cellulose, Wide mouth skimmer, 2013 new Diver Dan (craigslist) to replace the faded old Hayward AquaBug. TF-100

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    Re: Need help disconnecting natural gas heater

    Some really mixed opinions here, I did not intend this to be so controversial, and I appreciate and understand the warnings. Let me clarify, I am not looking to do gas work. The gas to this line has been off for 3 years. I do not currently have a gas line to connect this to at my house, I will hire a pro to plumb that and hook up the heater next season. I just need to get this thing disconnected and in my posession before my neighbor moves. If it comes to cutting a pipe, I am hiring someone, but that is not the case. Isn't this just a simple disconnect and cap? Recently, I pulled out an old rusty ng grill that the previous owners left behind. I made sure the valve from inside the house was off (it was) disconnected the gas line and capped it. This seems substantially the same to me. Really I am not trying to be argumentative here, just giving the full story. If there is a belief that only a pro should ever touch an ng pipe, regardless of whether or not there is gas running through it... then I guess that is that.

    Tech guy - Now THAT is something I had not considered, re the old circuit.

    Anyway, here is a pic of the inside, looks like it is just a union to disconnect and cap. Does this seem like something that is only the province of a pro?
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    Dedicated TFPer since 2012 with recommended test kit
    Above ground, 30 foot round pool, 21,000 gallons
    Hayward 150 sq foot cartridge filter, 1HP Waterway pump
    Raypak 400K BTU NG Heater!
    Installed in 2006? (just a guess, pool came with house I purchased in June 2012)

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    Mod Squad jblizzle's Avatar
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    Re: Need help disconnecting natural gas heater

    That picture is not a union, that just looks like a pipe size adapter. I think cutting is required.
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    Re: Need help disconnecting natural gas heater

    Yup that would require, cutting, threading, then capping, or working backward from the house/supply side.
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    Mod Squad jblizzle's Avatar
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    Re: Need help disconnecting natural gas heater

    If you cut the horizontal pipe, then you could just unscrew the 90 and put a cap on the vertical pipe.

    All in all, that install does not appear to be to code with no local shut-off valve and no union (although maybe the union is not required) and no condensation drip line (although maybe that is not required either).
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Re: Need help disconnecting natural gas heater

    That looks like the back end of a dusty of gas valve. The photo is clear... but too close to see what's going on.

    Or is that a flame roll-out switch? Its tough to tell this close.
    -- Guy --
    10K gallons in 21' Round 52 inch wall Aqualeader AG, Hayward Power Flow LX 1.5 HP pump motor, Hayward Perflex EC50AC DE filter w/Cellulose, Wide mouth skimmer, 2013 new Diver Dan (craigslist) to replace the faded old Hayward AquaBug. TF-100

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