Samsung AQV09N Series, Руководство по установке, Страница: 16 / 21

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ENGLISH
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omPleting the
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nstallation
Purging the Connected Pipes
The outdoor unit is loaded with sufficient R410A refrigerant for a 24.6ft (7.5m)
pipe You should purge the air in the indoor unit and in the pipe.
If air remains in the refrigerant pipes, it affects the compressor. It may cause
reduction of cooling capacity and malfunction.
Refrigerant for air purging is not charged in the outdoor unit.
use Vacuum Pump as seen in the picture.
1
Connect each assembly pipe to the appropriate valve on the outdoor unit and
tighten the flare nut .
2
Tighten the flare nut first with your hands, and then with a torque wrench,
applying the following torque:
Outer Diameter Torque
/4 inch (6 .35mm) 0 .~ .3ft•lb (40~70 kgf•cm)
3/8 inch (9 .5mm) 8 .~0 .3ft•lb (50~80 kgf•cm)
/ inch ( .80mm) 7 .5~30 .4ft•lb (380~40 kgf•cm)
5/8 inch (5 .88mm) 3 .8~34 .7ft•lb (440~480 kgf•cm)
3 Connect the charging hose of the low-pressure side of manifold gauge to a
gas service port as seen in the picture .

The valve connection port of low-pressure side is 5/6 inch(7 .94mm) .
4
Open the valve of the low pressure side of manifold gauge counterclockwise .
5
Purge the air in the connected pipes using the vacuum pump for about
0 minutes .
- Close the valve of the low pressure side of manifold gauge clockwise .
- Make sure that pressure gauge shows -0 .MPa(-76cmHg) after about
0 minutes .
This procedure is very important to avoid a gas leak .
- Turn off the vacuum pump .
- Remove the hose of the low pressure side of manifold gauge .
6
Set a valve cork of liquid and gas service port to the open position .
7 Mount the valve stem nuts and the service port cap to the valve, and tighten
them at the torque of 3 .ft • lb (83kgf • cm) with a torque wrench .
8
Check for a gas leak paying particular attention to the 3-way valve’s stem nuts
and to the service port cap .
9 For further detailed information how to check the low pressure after
installation, Please refer to the Service Manual .
Outdoor unit Indoor unit
Gas pipe side
Liquid pipe side
Vacuum
Pump
Adding Refrigerant
You must add refrigerant if the pipe is longer than 24.6ft (7.5m).
Refer to the Service Manual for further details .
B
(liquid)
Stem cap
Valve stem
A
(gas)
5/6 inch (7 .94mm)
If you use a
pipe…
Then…
AQV09N

/AQV12N

AQV18N

/AQV24N

longer than
4 .6ft (7 .5m)
You can install 49 .ft(5m)
of connecting pipe to the
maximum, and you don’t
have to charge any additional
refrigerant .
You can install 98 .4ft(30m) of connecting
pipe to the maximum, and you should
charge 0 .6oz(5g) of refrigerant R40A
additionalyfor each extra feet(metre) .
shorter than
4 .6ft (7 .5m)
The purge time is normal . The purge time is normal .