35
Notions on refrigerant piping connection
m
CAUTION
Do not damage, tighten or deform the pipe
during cutting. This would greatly reduce the
heating efficiency of the unit.
6.1.3 Countersink the ends of the pipes
Correct flaring is essential to perfectly seal the gasket.
1 After removing burrs from the cut pipe, seal the ends
with PVC tape to prevent foreign materials from
entering.
2 Wrap the pipe in an insulating material.
3 Place a countersunk nut at each end of the pipe. Make
sure that the nuts are facing in the correct direction,
because after countersinking it will no longer be
possible to apply them or change their direction (see
“Fig. 28”).
4 When you are ready to complete the flaring, remove
the PVC tape from the ends of the pipe.
Flared nut
Copper pipe
Fig. 28
5 Tighten the end of the pipe into the template of
the flaring tool. The end of the pipe must extend
beyond the edge of the template, according to the
measurements indicated in the table below.
6 Apply the countersink screw to the template.
7 Turn the screw clockwise until the desired countersink
is achieved.
Fig. 29
Template
Pipe
A
Fig. 30
8 Remove the countersunk screw and template, then
check that the end of the pipe is countersunk evenly
and not cracked.
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