How To Process Tubing; How To Install The Timer Wired Remote Controller - Panasonic Shows U-26PE1U6 Technical Data & Service Manual

8. HOW TO INSTALL THE TIMER WIRED REMOTE CONTROLLER

NOTE
Refer to the Instraction Manual attaehed to the Timer Remote Controller.

1-13. HOW TO PROCESS TUBING

The liquid tubing side is connected by a flare nut, and
the gas tubing side is connected by brazing.
1. Connecting the Refrigerant Tubing
Use of the Flaring Method
Many conventional split system air conditioners employ
the flaring method to connect refrigerant tubes which run
between indoor and outdoor units. In this method, the
copper tubes are flared at each end and connected with
flare nuts.
1
Flaring Procedure with a Flare Tool
(1) Cut the copper tube to the required length with a tube
cutter. It is recommended to cut approx. 12 – 20 in.
longer than the tubing length you estimate.
(2) Remove burrs at each end of the copper tubing with
a tube reamer or file. This process is important and
should be done carefully to make a good flare. Be sure
to keep any contaminants (moisture, dirt, metal filings,
etc.) from entering the tubing. (Figs. 1-110 and 1-111)
NOTE
When reaming, hold the tube end downward and be sure
that no copper scraps fall into the tube. (Fig. 1-111)
(3) Remove the flare nut from the unit and be sure to
mount it on the copper tube.
(4) Make a flare at the end of the copper tube with a flare
tool. (Fig. 1-112)
NOTE
A good flare should have the following characteristics:
inside surface is glossy and smooth
edge is smooth
tapered sides are of uniform length
Before
Flare tool
1-118
1. Specifications
Deburring
After
Fig. 1-110
Copper
tubing
Reamer
Fig. 1-111
Flare nut
Copper
tubing
Fig. 1-112