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?
Originally Posted by jayp
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.
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...
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