4. Flaring work.
A) Firmly hold copper pipe in a die
in the dimension shown in the table
below.
Bar
Cooper
pipe
Handle
Clamp
handle
Yoke
Red arrow mark
1,3
1,6
1,8
2,4
Máx.
0,7
1,0
1,0
2,2
A (mm)
Mín.
OUTER
DIAMETER (mm)
6,35
9,53
12,70
16
Connection Adjustment
1. Align the pipes to be connected.
2. Unscrew the flare nut with your
fingers and then with a wrench and
screw wrench, as shown in the
following figure.
Flare
nut
Pipings
Indoor unit
tubing
OUTER
DIAMETER (mm)
6,35
9,53
12,70
16
TIGHTENING
TORQUE(N/cm)
1570 (160 kgf/cm)
2940 (300 kgf/cm)
4900 (500 kgf/cm)
7360 (750 kgf/cm)
ADITTIONAL TIGHTENING
DE TORQUE(N/cm)
1960 (200 kgf/cm)
3430 (350 kgf/cm)
5390 (550 kgf/cm)
7850 (800 kgf/cm)
Caution:
Excessive twisting may
break the nut, depending on the
installation conditions.
19
20
Flaring work
Main cause for refrigerant leakage is
due to defect in the flaring work.
Carry out correct flaring work using
the following procedure:
1. Cut the pipes and the cable.
A) Use the piping kit accessory or
pipes purchased locally.
B) Measure the distance between the
indoor and the outdoor unit.
C) Cut the pipes a little longer than
the measured distance.
D) Cut the cable 1.5m longer than the
pipe length.
2. Burr removal
A) Completely remove all burrs
from the cut cross section of
pipe/tube.
B) Put the end of the copper.
tube/pipe in a downward direction
as you remove burrs in order to
avoid dropping burrs into the
tubing.
3. Putting nut on.
A) Remove flare nuts attached to
indoor and outdoor unit, then put
them on pipe/tube having
completed burr removal.(not
possible to put them on after flaring
work)
Pipe
Correct
Wrong
Oblique Roughness Burr
Pipe
Reamer
Point
down
Refrigerant piping connection
Flare nut
Cooper tube
Summary of Contents for FRS095YC1
Page 28: ...54 53 Notes Notes ...
