Samsung Purging the Connected Pipes, Then…, pipe…, AQV09J/AQV12J, AQV18J/AQV24J, English

COMPLETING THE INSTALLATION

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.

1Connect each assembly pipe to the appropriate valve on the outdoor unit and tighten the flare nut.

2Tighten the flare nut first with your hands, and then with a torque wrench, applying the following torque:

Outer Diameter	Torque
1/4 inch (6.35mm)	10.1~12.3ft•lb (140~170 kgf•cm)
3/8 inch (9.52mm)	18.1~20.3ft•lb (250~280 kgf•cm)
1/2 inch (12.80mm)	27.5~30.4ft•lb (380~420 kgf•cm)
5/8 inch (15.88mm)	31.8~34.7ft•lb (440~480 kgf•cm)

3Connect 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 5/16 inch(7.94mm).

4Open the valve of the low pressure side of manifold gauge counterclockwise.

5Purge the air in the connected pipes using the vacuum pump for about 10 minutes.

-Close the valve of the low pressure side of manifold gauge clockwise.

-Make sure that pressure gauge shows -0.1MPa(-76cmHg) after about 10 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.

6Set a valve cork of liquid and gas service port to the open position.

7Mount the valve stem nuts and the service port cap to the valve, and tighten them at the torque of 13.2ft•lb (183kgf•cm) with a torque wrench.

8Check for a gas leak paying particular attention to the 3-way valve’s stem nuts and to the service port cap.

9For further detailed information how to check the low pressure after installation, Please refer to the Service Manual.

Adding Refrigerant

You must add refrigerant if the pipe is longer than 24.6ft (7.5m).

If you use a		Then…
pipe…	AQV09J/AQV12J	AQV18J/AQV24J
	You can install 49.2ft(15m)	You can install 98.4ft(30m) of connecting
	of connecting pipe to the
longer than		pipe to the maximum, and you should
	maximum, and you don’t
24.6ft (7.5m)		charge 0.16oz(15g) of refrigerant R410A
	have to charge any additional
		additionalyfor each extra feet(metre).
	refrigerant.
shorter than	The purge time is normal.	The purge time is normal.
24.6ft (7.5m)

Outdoor unit Indoor unit

Gas pipe side

Liquid pipe side

Vacuum

Pump

Valve stem

Stem cap

A

(gas)

	B
5/16 inch (7.94mm)	(liquid)

ENGLISH

Refer to the Service Manual for further details. E-13