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OUTDOOR UNIT INSTALLATION
B: Burr removal
1. Completely remove all burrs from the cut
cross section of pipe/tube.
2. 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.
C: Putting nut on
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)
D: Flaring work
Firmly hold copper pipe in a die in the
dimension shown in the table below.
A(mm)
Outer diam.
(mm)
Max.
Min.
6.35
1.3
0.7
9.52
1.6
1.0
1.8
1.8
12.7
12.7
1.0
1.0
16
2.0
2.2
E: Pipe length
Max. Length
Max. drop
Capacity
of refrigerant
height
Model
(Btu/h)
pipe(m)
25
<15000
R410A
30
inverter
>15000~<24000
split air
>24000~<36000
50
condtioner
>36000~<60000
65
2. Tightening Connection
Align the center of the pipes.
Sufficiently tighten the flare nut with fingers,
and then tighten it with a spanner and torque
wrench as shown in Fig.16 & 17.
Outer
Tightening
Additional tightening
diam.
torque(N.cm)
torque(N.cm)
1500
1600
6.35
(153kgf.cm)
(163kgf.cm)
2600
2500
9.52
(265kgf.cm)
(255kgf.cm)
3600
3500
12.7
(367kgf.cm)
(357kgf.cm)
4500
4700
16
(459kgf.cm)
(479kgf.cm)
Caution
Excessive torque can break nut
depending on installation conditions.
Pipe
Reamer
Point down
Fig.13
Flare nut
Copper tube
Fig.14
Bar
Bar
(m)
Copper pipe
Clamp handle
10
20
Fig.15
25
30
Indoor unit tubing
Flare nut
Fig.16
Fig.17
11
11
Connect the cable to the outdoor unit
1. Remove the electrical wiring cover from the outdoor unit by loosening the screws.
2. Connect the connective cables to the terminals as identified with their respective matched
numbers on the terminal block of indoor and outdoor units.
3. Secure the cable onto the control board with the cable clamp.
4. To prevent the in gress of water, form a loop of the connective cable as illustrated in the
installation drawings of indoor and outdoor units.
5. Insulate unused cords (conductors) with PVC-tape. Process them so they do not touch any
electrical or metal parts.
Fig.18
Handle
Yoke
Cone
Red arrow mark
Air purging
Air and other foreign matter in the refrigerant circuit causes abnormal pressure rise, which
may result in equipment damage and even injury. T herefore, the indoor unit and tubing
between the indoor and outdoor unit must be leak tested and evacuated to remove any
noncondensables and moisture from the system.
1.Air purging with vacuum pump
Pipings
Preparation
Check that each tube(both liquid and gas side tubes) between the indoor and outdoor units
have been properly connected and all wiring for the test run has been completed. Remove
the service valve caps from both the gas and the liquid side on the outdoor unit. Note that
both the liquid and the gas side service valves on the outdoor unit are kept closed at this stage.
Pipe length and refrigerant amount:
Connective
Air purging
pipe length
method
Less than 5m
Use vacuum
pump.
Use vacuum
More than 5m
pump.
OUTDOOR UNIT INSTALLATION
Terminal block
Cover
L
N
S
Screw(1~2,model
dependent)
Cable clamp
(1)
Indoor unit
W 1(L) 2(N) S
Additional amount of refrigerant to be charged
Liquid side:
6.35
Liquid side:
R22: (Pipe length-5)x30g/m
R22: (Pipe length-5)x60g/m
R410A: (Pipe length-5)x15g/m
R410A: (Pipe length-5)x30g/m
12
12
L
N
S
Outdoor unit
W 1(L) 2(N) S
L
N
Power
supply
(2)
9.52
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