Results 1 to 3 of 3
  1. #1
    Join Date
    Nov 2012
    Posts
    9

    Oxygen vs Nitrogen Brazing

    In post dated 11/18/2012 titled Replacing Split System Heat Pump, professional member stated that nitrogen brazing should be used for a good install. Just found out that my HVAC contractor only uses oxygen/acetylene. Is this a problem?

  2. #2
    Join Date
    Jan 2005
    Location
    Emerald Coast
    Posts
    965
    Quote Originally Posted by jayp View Post
    In post dated 11/18/2012 titled Replacing Split System Heat Pump, professional member stated that nitrogen brazing should be used for a good install. Just found out that my HVAC contractor only uses oxygen/acetylene. Is this a problem?
    .

    It appears you got lost in translation.

    Oxy/acetylene is for the brazing & nitrogen to purge and prevent contamination
    inside the tubing.

    Just ask your contractor to purge (with nitrogen) while brazing.
    ..
    Do not attempt vast projects with
    half vast experience and ideas.
    ...

  3. #3
    Join Date
    Mar 2009
    Location
    Mount Holly, NC
    Posts
    3,551
    if they are ONLY using oxy/acet... they are doing you a disservice. all brazing should be done with trace amounts of Nitrogen or CO2 flowing through the tubing to prevent oxidation of the tubing from contaminating the oil and the expansion valve in your system.

    NEVER NEVER NEVER FLOW OXYGEN INTO REFRIGERANT LINES!!!!!
    The TRUE highest cost system is the system not installed properly...
    The three big summer hearththrobs...
    Mel Gibson
    Dwane Johnson
    The A/C repairman

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event