Results 1 to 12 of 12

Thread: how to convert LPG heater to Natural gas

  1. #1
    Premium Member Svenok's Avatar
    Join Date
    Jan 2008
    Location
    Why alla
    Age
    48
    Posts
    661
    Thanks
    385
    Thanked 214 Times in 91 Posts
    Rep Power
    34

    Default how to convert LPG heater to Natural gas



    I would like to change my Rennie (R82M) from LP to Natural gas.
    The house we have shifted into has natural gas, I could then just "plug n play"

    Any gas fitters out there? I think on the back it has 12.7MJ/Hr dont quote me on this just yet, but I will confirm later.
    "It's Life Jim" But Not As We Know It!

    "We come in peace" shoot to kill.



  2. #2
    Senior Member intelliGEORGE's Avatar
    Join Date
    Jan 2008
    Location
    Sydney, AUSTRALIA
    Age
    33
    Posts
    4,048
    Thanks
    873
    Thanked 1,454 Times in 668 Posts
    Rep Power
    154

    Default

    They have both LPG and Natural Gas in that model, may be something as simple as replacing the gas manifold as NG requires a larger diameter holes than LPG.

  3. #3
    Premium Member Svenok's Avatar
    Join Date
    Jan 2008
    Location
    Why alla
    Age
    48
    Posts
    661
    Thanks
    385
    Thanked 214 Times in 91 Posts
    Rep Power
    34

    Default

    ok thats good. who would have that stuff? I'm out in the sticks, and you can get toilet paper with a pre-order!
    "It's Life Jim" But Not As We Know It!

    "We come in peace" shoot to kill.

  4. #4
    Senior Member intelliGEORGE's Avatar
    Join Date
    Jan 2008
    Location
    Sydney, AUSTRALIA
    Age
    33
    Posts
    4,048
    Thanks
    873
    Thanked 1,454 Times in 668 Posts
    Rep Power
    154

    Default

    Try ringing Rinnai direct as they would more than likely stock the conversion kits, they would be able to point you in the right direction and/or deliver the kit to you.

  5. #5
    Super Moderator mtv's Avatar
    Join Date
    Apr 2008
    Posts
    9,247
    Thanks
    1,587
    Thanked 4,302 Times in 2,427 Posts
    Rep Power
    25

    Default

    Quote Originally Posted by Svenok View Post
    ok thats good. who would have that stuff? I'm out in the sticks, and you can get toilet paper with a pre-order!
    Gasfitters, dealers who sell the heaters, etc.

    If it has a regulator, that will also need to be changed and the gas/air ratio adjusted.

  6. #6
    Premium Member Svenok's Avatar
    Join Date
    Jan 2008
    Location
    Why alla
    Age
    48
    Posts
    661
    Thanks
    385
    Thanked 214 Times in 91 Posts
    Rep Power
    34

    Default

    'oh' this is getting tricky!
    "It's Life Jim" But Not As We Know It!

    "We come in peace" shoot to kill.

  7. #7
    Premium Member Bibliophile's Avatar
    Join Date
    May 2009
    Location
    Sydney
    Age
    65
    Posts
    745
    Thanks
    363
    Thanked 311 Times in 154 Posts
    Rep Power
    39

    Default

    Quote Originally Posted by mtv View Post
    Gasfitters, dealers who sell the heaters, etc.

    If it has a regulator, that will also need to be changed and the gas/air ratio adjusted.
    Isn't it the jets that control fuel/air ratio?
    I think the regulator merely controls the pressure.

  8. #8
    Premium Member Svenok's Avatar
    Join Date
    Jan 2008
    Location
    Why alla
    Age
    48
    Posts
    661
    Thanks
    385
    Thanked 214 Times in 91 Posts
    Rep Power
    34

    Default

    Just done a google and found their Aus web site has a few phone numbers so I will give them a call tomorrow, tanks guys for your help. Will let you know what jet needs to be installed.
    "It's Life Jim" But Not As We Know It!

    "We come in peace" shoot to kill.

  9. #9
    Premium Lager
    Join Date
    Jan 2008
    Location
    Watching you!!
    Age
    50
    Posts
    3,349
    Thanks
    950
    Thanked 947 Times in 509 Posts
    Rep Power
    129

    Default

    Quote Originally Posted by Bibliophile View Post
    Isn't it the jets that control fuel/air ratio?
    I think the regulator merely controls the pressure.
    quite correct. propane (C3H8) is a heavier gas than natural gas (Methane (CH3)) so needs a larger "hole" to go through to mix with air to burn at its most efficient.

    Changing the jet size should do the trick, however, disclaimer, I am not a plumber, use the trained professional to assist you and get the right equipment and parts.

  10. #10
    Premium Member Svenok's Avatar
    Join Date
    Jan 2008
    Location
    Why alla
    Age
    48
    Posts
    661
    Thanks
    385
    Thanked 214 Times in 91 Posts
    Rep Power
    34

    Default

    no good. The heater is so old they cant find it on their system.
    "It's Life Jim" But Not As We Know It!

    "We come in peace" shoot to kill.

  11. #11
    Senior Member viper5150's Avatar
    Join Date
    Jan 2008
    Posts
    643
    Thanks
    29
    Thanked 105 Times in 64 Posts
    Rep Power
    25

    Default

    Natural gas uses a larger diameter hole than lpg. Depending on age the parts may not even be available anymore. We recently had that problem when trying to convert an old Rinnai heater from natural to lpg. Thankfully the guy we used had another customer with the same heater looking to go from lpg to natural so we just arranged a swap.

    We also had a Rinnai 406T convection heater to convert to natural gas. I ordered the conversion kit for it as i was going to do it myself but there was a box full of parts that had to be changed out as well as computer being re-programmed and the gas flows adjusted. After looking at 3 pages of instruction i decided not to do it and took it to a licenced gas fitter because if anything happened and the house burnt down i didnt think the insurance company would be willing to pay out.

  12. #12
    Premium Member Svenok's Avatar
    Join Date
    Jan 2008
    Location
    Why alla
    Age
    48
    Posts
    661
    Thanks
    385
    Thanked 214 Times in 91 Posts
    Rep Power
    34

    Default

    Quote Originally Posted by viper5150 View Post
    a licenced gas fitter because if anything happened and the house burnt down i didnt think the insurance company would be willing to pay out.

    Yeah I hear ya! I'm just going to tell the kids put extra clothes on and stop being, lar lars. Maybe keep them outside for a couple of hours then let them in!
    "It's Life Jim" But Not As We Know It!

    "We come in peace" shoot to kill.

LinkBacks (?)

  1. 18-04-12, 04:25 PM

Similar Threads

  1. FS: 2 x Rinnai Granada MK-II Natural Gas Heaters...
    By fsking in forum Buy Sell and Trade
    Replies: 20
    Last Post: 11-05-09, 02:02 PM
  2. Rinnai gas heater, lpg to natural gas?
    By viper5150 in forum General Chat
    Replies: 1
    Last Post: 30-12-08, 10:43 PM
  3. Water in heater box EL Falcon
    By ocd_csv in forum Automotive Technology
    Replies: 3
    Last Post: 14-08-08, 10:04 AM
  4. most efficient heater
    By osiris777 in forum Home Energy and Improvements
    Replies: 26
    Last Post: 14-07-08, 08:15 PM
  5. Compressed Natural Gas (CNG) 0n 7.30 report
    By pieces in forum Automotive Technology
    Replies: 2
    Last Post: 02-05-08, 08:10 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •