Step 2: Remove Burrs; Step 3: Flare Pipe Ends - Mirage IVEH121A Owner's Manual

DO NOT DEFORM PIPE WHILE
CUTTING
Be extra careful not to damage, dent, or
deform the pipe while cutting. This will
drastically reduce the heating efficiency of
the unit.

Step 2: Remove burrs

Burrs can affect the air-tight seal of refrigerant
piping connection. They must be completely
removed.
1. Hold the pipe at a downward angle to prevent
burrs from falling into the pipe.
2. Using a reamer or deburring tool, remove all
burrs from the cut section of the pipe.

Step 3: Flare pipe ends

Proper flaring is essential to achieve an airtight
seal.
1. After removing burrs from cut pipe, seal the
ends with PVC tape to prevent foreign materials
from entering the pipe.
2. Sheath the pipe with insulating material.
3. Place flare nuts on both ends of pipe. Make
sure they facing in the right direction, because
you can't put them on or change their direction
after flaring. See Fig. 5.3.
4. Remove PVC tape from ends of pipe
when ready to perform flaring work.
5. Clamp flare form on the end of the pipe.
The end of the pipe must extend beyond
the edge of the flare form in accordance
with the dimensions shown in the table
below.
PIPING EXTENSION BEYOND FLARE FORM
54