Installation of Unit
Preparation
of
Piping
Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the following procedure.
1.Cut the pipes and the cable.
•Use the accessory piping kit or the pipes purchased locally.
•Measure the distance between the indoor and the outdoor unit.
•Cut the pipes a little longer than measured distance.
•Cut the cable 1.5m longer than the pipe length.
2.Burrs removal
•Completely remove all burrs from the cut cross section of pipe/tube.
•Put the end of the copper tube/pipe to downward direction as you remove burrs in order to avoid to let burrs drop in the tubing.
3.Putting nut on
•Remove flare nuts attached to indoor and outdoor units, than put them on pipe/tube having completed burr removal.
(Not possible to put them on after flaring work)
4.Flaring work
•Carry out flaring work using dedicated flaring tool as shown below.
Outside diameter | A | |
mm | inch | mm |
Ø6.35 | 1/4 | 1.1~1.3 |
Ø9.52 | 3/8 | 1.5~1.7 |
Ø12.7 | 1/2 | 1.6~1.8 |
Ø15.88 | 5/8 | 1.6~1.8 |
Ø19.05 | 3/4 | 1.9~2.1 |
Firmly hold copper tube in a bar(or die) as indicated dimension in the table above.
5.Check
•Compare the flared work with figure below.
•If flare is noted to be defective, cut off the flared section and do flaring work again.
Copper |
| Slanted | Uneven Rough |
tube | 90° | ||
|
| Pipe |
|
|
| Reamer | |
Point down
Flare nut
Copper tube
| Handle |
Bar | Bar |
"A" | Yoke |
| Cone |
Copper pipe
Clamp handle
Red arrow mark
Smooth all round |
|
|
Inside is shining without scratches | ||
| = Improper flaring = | |
Inclined | Surface | Cracked Uneven |
Even length | damaged | thickness |
|
| |
all round |
|
|
12Floor Standing type Air Conditioner