Installation

11 ENGLISH
3.3.1 Flaring work
Main cause for refrigerant leakage is due
to defect in the aring work.
Carry out correct aring work using the
following procedure:
1. Cut the pipes and the cable.
• Use the piping kit accessory or pipes
purchased locally.
• Measure the distance between the
indoor and the outdoor unit.
• Cut the pipes a little longer than the
measured distance.
• Cut the cable 1.5m longer than the pipe
length.
Fig.3.3.1-1
2. Burr removal
• Completely remove all burrs from the
cut cross section of pipe/tube.
• 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.
Fig.3.3.1-2
3. Put nut on
• Remove are nuts attached to indoor
and outdoor unit, then put them on
pipe/tube after completed burr removal.
(It is not possible to put them on after
aring work.)
Fig.3.3.1-3
4. Flaring work
• Carry out aring work using aring tool
as shown below.
Fig.3.3.1-4
• Firmly hold copper pipe according
to the dimension shown in the table
below.
Outer diam. (mm)
A (mm)
Max. Min.
Ф6.35 (1/4”) 1.3 0.7
Ф9.52 (3/8”) 1.6 1.0
Ф12.70 (1/2”) 1.8 1.0
Ф15.88 (5/8”) 2.4 2.2
Pipe
Pipe
Reamer
Flare Nut
Copper Tube
Bar
Copper
Pipe
Yoke
Handle
Bar
Cone
Red arrow
mark
Clamp Handle
"A"
Face Down
Oblique BurrRoughness