LG ARNU243S8R2 Installation Manual page 42

REFRIGERANT PIPING
Refrigerant Safety
WARNING
Buildings with twenty-four (24) hour occupancy allow half of that concentration.
ant safety.
Brazing
Note:
•
1.
installer using best practices and utmost care while assembling the piping system.
• Store pipe stock in a dry place and keep stored pipe capped and clean.
•
2.
• Use adapters to assemble different sizes of pipe.
•
• Use a tubing cutter; do not use a saw to cut pipe. De-bur and clean all cuts before assembly.
3. Brazing joints:
•
•
•
heat barrier spray.
42
Figure 32: Using Nitrogen Gas During Brazing
Refrigerant Pipe
Nitrogen gas
3.0 psi or less
Do not block outlet side.
When pressure inside pipe
is above atmospheric pressure,
pinhole leaks can occur.
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG" is a registered trademark of LG Corp.
1
1 Also consult state and local codes in regards to refriger-
Welding Point
Tape
(no air bubbles)
Regulator
Nitrogen
Auxiliary
Gas
Valve Tank