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indoor unit
installation
sizing the
pipe
preliminary
installation
flaring
nitrogen gas blow
flushing
l e a k a g e
testing
evacuation
brazing
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Vemember the below principlesA
results
dry
clean
airtight
C Qoisture /in the form of rainwater or water used
during installation0 getting inside of the pipes5
C Qoisture from condensation forming or seeping
into the pipes5
C Sxidation inside pipes during brazing
C Iirt3 dust3 or foreign matter getting inside pipes
C Toor brazing
C Toor flaring
how to prevent
careful handling
of pipes
charging
nitrogen
evacuation
nitrogen gas blow
careful handling of pipes
flushing
use of suitable material
/copper pipes3 solder3 etc0
perform basic work of
brazing carefully
perform basic work of flaring
carefully
leakage test
Xhe refrigerant pipes exampleA
keep dry
keep clean
keep airtight
moisture
GFI
dirt
GFI
leakage
GFI