(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 3 of 3

Thread: Tankless propane water heater

Hybrid View

  1. #1
    Retired Auto Mechanic HANKSTER's Avatar
    Join Date
    Nov 2011
    Location
    Redding, Calif
    Posts
    9

    Default Tankless propane water heater

    THE TAKAGI WOULDN'T START AGAIN THIS MORNING. OUTSIDE TEMP WAS 41 DEGREES, AND GAS (PROPANE)
    TEMP WAS 31 DEGREES. NO FIRE AT ALL. BEFORE YOU CRUSH THAT *&^%$# TANKLESS OUTDOOR UNIT, BUY
    AN INFRARED THERMOMETER (LIKE THEY USE IN AUTO SHOPS) AND SHOOT A READING ON THE INLET GAS AND H20
    PIPES BEFORE YOU TAKE ANYTHING APART. 31 DEGREE PROPANE WILL HAVE TOO LOW A FLOW RATE NO MATTER
    WHAT YOU POUR IT INTO!! IT HAS TO AT LEAST BE WARM ENOUGH TO EVAPORATE INTO SOME KIND OF A FLAMMABLE
    GAS. YOU COULD HAVE GAS PIPES THE SIZE OF TOILET DRAINS AND IT MIGHT NOT LIGHT AT ALL, AT 31 DEGREES!!

  2. #2
    DIY Senior Member BobL43's Avatar
    Join Date
    Mar 2011
    Location
    Long Island, NY
    Posts
    1,772

    Default

    Quote Originally Posted by HANKSTER View Post
    THE TAKAGI WOULDN'T START AGAIN THIS MORNING. OUTSIDE TEMP WAS 41 DEGREES, AND GAS (PROPANE)
    TEMP WAS 31 DEGREES. NO FIRE AT ALL. BEFORE YOU CRUSH THAT *&^%$# TANKLESS OUTDOOR UNIT, BUY
    AN INFRARED THERMOMETER (LIKE THEY USE IN AUTO SHOPS) AND SHOOT A READING ON THE INLET GAS AND H20
    PIPES BEFORE YOU TAKE ANYTHING APART. 31 DEGREE PROPANE WILL HAVE TOO LOW A FLOW RATE NO MATTER
    WHAT YOU POUR IT INTO!! IT HAS TO AT LEAST BE WARM ENOUGH TO EVAPORATE INTO SOME KIND OF A FLAMMABLE
    GAS. YOU COULD HAVE GAS PIPES THE SIZE OF TOILET DRAINS AND IT MIGHT NOT LIGHT AT ALL, AT 31 DEGREES!!
    Not so sure of that! I have a 200 lb propane tank outside and a Raypak 150K BTU propane spa heater outside. fires up and works fine in 9 degree weather. Long cold winter here last year. about 15 feet of 1/2" steel pipe from tank regulator to heater regulator. Boiling point of propane is -41 degrees. I guess it depends a lot on the size and surface area of the propane tank so it can soak in all that 9 degree heat to warm it up enough to boil off enough gas to meet the demand.

    Propane is expensive too, very expensive.
    I am definitely not a pro plumber, but I am a pro crastinator

  3. #3
    Retired Auto Mechanic HANKSTER's Avatar
    Join Date
    Nov 2011
    Location
    Redding, Calif
    Posts
    9

    Default

    Bobl43;

    my takagi lives about 50 feet from the propane tank, and the pipe under the house has no wrap, unlike the h20 pipes.
    I think this is my problem, but i need to hire a much skinnier guy to crawl under there and wrap the pipe!

Similar Threads

  1. any difference between gas and propane tankless water heater?
    By nothingeverworks in forum Tankless Water Heater Forum
    Replies: 5
    Last Post: 03-29-2011, 11:26 AM
  2. Relighting Propane water heater problems
    By txtroutbum in forum Water Heater Forum, Tanks
    Replies: 1
    Last Post: 03-28-2010, 05:06 PM
  3. Calculating Propane Usage and BTUs for Tankless Hot Water System
    By Diavolicchio in forum Tankless Water Heater Forum
    Replies: 43
    Last Post: 12-21-2009, 02:04 PM
  4. Switching propane gas valve to nat gas water heater
    By jbclem in forum Plumbing Forum, Professional & DIY Advice, Tips & Tricks
    Replies: 6
    Last Post: 06-02-2008, 01:29 PM
  5. electric or propane hot water heater
    By Greg in forum Plumbing Forum, Professional & DIY Advice, Tips & Tricks
    Replies: 2
    Last Post: 05-23-2005, 07:46 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
  •