Refrigerant Adjustment; Flare Nut Fixing Torque - Samsung AJ009JNNDCH Service Manual

7-4 Refrigerant Adjustment

Class
Connection Pipe Length
Standard 30m
(AJ020JCJ2CH)
Standard 40m
(AJ024JCJ3CH)
Standard 40m
(AJ036JCJ5CH)
Standard<Total≤50m
(AJ020JCJ2CH)
Standard<Total≤70m
(AJ024JCJ3CH)
Standard<Total≤80m
(AJ036JCJ5CH)
It would be the best choice to use the standard tube length to keep the basic quality of Room Air conditioner,
for example cooling capacity, sound level, vibration level, and reliability.
But, according to a certain different installation condition, the connection tube length could be changed in the
recommendation length that is shown above.
In this case, installer should keep the installation condition to keep the quality of Room Air conditioner.
Refrigerant should be charged additionally as written above according to the change of the length of the
connection tube.
It needs to affect the decrease in cooling and heating capacity or of the reliability of compressor that may be
caused by a lac k of refriger ant.
Installation position difference between the indoor unit and the outdoor unit should not exceed over than 15
meters.
When the connection pipe is been extended longer than 5 meters, it might need to change the diameter
of the electrical wire to a larger size in order to keep a voltage drop for starting room air conditioner is not less
than 85% of the rated voltage. And then, a voltage meter will be useful to check the rate of the voltage drop.

7-5 Flare Nut Fixing Torque

Outer Diameter (D)
ø6.35 mm(1/4")
ø9.52 mm(3/8")
ø12.70 mm(1/2")
ø15.88 mm(5/8")
Samsung Electronics
At installation
Refrigerant
Air-Purge Method
Adjustment
Unnecessary
In case of exeeding total
Refer to the detailed
pipe lengh 30m,
conneting up and
Add "10g" of refrigerant
purging the circuit.
(R410A) for every 1m
(7-2 page)
In case of exeeding total
pipe lengh 40m,
Add "10g" of refrigerant
(R410A) for every 1m
In case of exeeding total
pipe lengh 40m,
Add "20g" of refrigerant
(R410A) for every 1m
Thickness
0.8 mm(0.03 ")
0.8 mm(0.03 ")
0.8 mm(0.03 ")
0.8 mm(0.03 ")
At service
Air-Purge Method Refrigerant Quantity
refer to specification sheet
In case of exeeding total
Purge air using a
vaccume pump
Add "10g" of refrigerant
or an additional
(R410A) for every 1m
refrigerant cylinder.
In case of exeeding total
Add "10g" of refrigerant
(R410A) for every 1m
In case of exeeding total
Add "20g" of refrigerant
(R410A) for every 1m
Torque
N·m ft·lb(kgf·cm)
14~18 10.1~13.0(140~180)
34~42 25.3~31.1(350~430)
49~61 36.2~44.8(500~620)
68~82 49.9~60.0(690~830)
pipe lengh 30m,
pipe lengh 40m,
pipe lengh 40m,
7-5