!
CAUTION
When installing pipe through the wall,
secure a cap at the end of the pipe.
Do not place the pipe directly on the
ground.
Attach a cap or
vinyl tape.
Attach a cap or
vinyl tape.
Attach a cap or vinyl
bag with rubber band.
Rain water
can enter
Correct
Incorrect
Correct
Incorrect
Correct
Incorrect
3
Processing of refrigerant piping
1. Pipe cutting
Cut the copper pipe correctly with a pipe cutter.
2. Burrs removal
Completely remove all burrs from the cross section of the pipe.
Put the end of the copper pipe downward to prevent burrs from
dropping in the pipe.
3.
Putting nut on
Remove flare nuts attached to indoor and outdoor units, then put
them on burrs removed pipe.
(Not possible to put them on after flaring work).
Flare nut for pipe depends on the diameter of pipe.
4. Flaring work
Perform flaring work with flaring tool as shown below.
5. Check
Compare the flared work with the figure below.
If flare is noted to be defective, cut off the flared section and
perform flaring work again.
(Unit: mm)
Diameter
∅
d
A
+0
-0.4
6.35
9.1
9.52
13.2
12.7
16.6
15.88
19.7
90
o
Good
No good
Tilted Uneven Burred
Flaring tool
Clutch type
Wing nut type
Flare nut
Copper pipe
Copper pipe
Burr
Spare
reamer
Pipe
cutter
Die
Copper pipe
Die
Yoke
Copper
pipe
Flare
nut
Smooth all
around
Inside is shining without any scratches
INSTALLATION INSTRUCTIONS
HO2019292HA
13
EN