Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

LP gas pipe question

Options
MBaker
MBaker Member Posts: 2
in Gas Heating
I have a 100,000 BTU LP gas heater. Will the piping in this diagram provide enough gas to the heater?

Comments

  • Henry
    Henry Member Posts: 998
    80 ft is sufficient for 262,000 BTU
  • Zman
    Zman Member Posts: 7,611
    @Henry
    It looks like ~40' of 3/4" and ~60" of 1/2"
    I think from a code point of view it is slightly undersized.
    Unless the heater is finicky about pressure, it will probably "work".
    "If you can't explain it simply, you don't understand it well enough"
    Albert Einstein
  • Tim McElwain
    Tim McElwain Member Posts: 4,656
    Is there no other equipment? What kind of a "heater" is it a furnace or a boiler?
  • JUGHNE
    JUGHNE Member Posts: 11,461
    How far is it from the LP tanks to the house?
  • lchmb
    lchmb Member Posts: 2,997
    edited January 2017
    using the longest run method puts you at just shy of 91 ft. Using the rego serviceman's guide indicates the 1/2 black iron will be good for 84k. I would size the entire line with at least 3/4" and drop at the unit. It will also leave you a safety net if something is added down the road. Just make sure your twin stage is connected directly to the 3/4 pipe, not with a 1/2 piece of copper...Also want to check the unit and verify they dont require a larger size...some are fussy when it come's to supply and drops in pressure..
    kcopp
  • MBaker
    MBaker Member Posts: 2
    It is a reznor 100 udap heater. The tanks are against the outside wall. the 8" section of 1/2" pipe passes through the wall to the outside. I don't foresee anything being added in the future. It is in a warehouse.
  • Henry
    Henry Member Posts: 998
    Zman said:

    @Henry
    It looks like ~40' of 3/4" and ~60" of 1/2"
    I think from a code point of view it is slightly undersized.
    Unless the heater is finicky about pressure, it will probably "work".

    according to code, 100 feet of 3/4 is good for 232,000 BTU. I would reduce at all to the apliance

Categories