Carrier CDII-184R1-0CTR4 Installation & Operation Manual page 21

7.2 PIPE FLARING
1. Remove protective caps from copper tube ends.
2. Position tube end downward.
3. Cut the tube to the given length using pipe cutter.
4. Remove the burns with a reamer.
5. Remove the flare nuts from unit connections and place them on the tube end.
6. Insert a flare nut into the pipe and flare the tube with the flaring tool.
Correctly and incorrectly dressed cut tubing.
Tubing is correctly reamed, with proper wall thickness at cut end.
Tubing is excessively reamed; wall is too thin.
Tubing is not reamed sufficiently; wall is too thick.
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