Samsung UCC2400C Connecting Up and Removing Air In the Circuit, Adding Refrigerant, English

Connecting Up and Removing Air In the Circuit

The outdoor units is loaded with sufficient R-22 refrigerant for 5 m(16 25 ft) of piping. The air in the indoor unit and in the pipe must be purged. If air remains in the refrigeration pipes, it will affect the compressor, reduce to cooling capacity and could lead to a malfunction. Refrigerant for air purging is not charged in the outdoor unit. Use Vacuum Pump as shown at the figure.

Adding Refrigerant

Refrigerant must be added if the piping measures more than 5 m(16 25 ft) in length (maximum of “A” m/ft). The quantity of additional refrigerant is variable according to the installation situation. Thus, make sure the outdoor unit situation before adding refrigerant. This operation can only be performed by a qualified refrigeration specialist.

☛	If you have used...					Then...
	More than 5 m(16		2		ft)	“B” of refrigerant (R-22) must be
			5
	of the pipes					added for each extra metre.
	Less than 5 m(16	2		ft)		The purge time is normal
		5
	of piping

ENGLISH

Model	A		B
		a		b
ACC2400C	30m	40g		50g
ACC2800C	(100ft)	(0.43oz)		(0.54oz)

For details about the installation situation(a or b), refer to page 44.

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

2Referring to the illustration opposite, tighten the flare nut on section B first manually and then with a wrench, applying the following torque.

Outer Diameter	Torque (kgf•cm)
6.35 mm (1/4")	160(11	3	ft•lb)
		5
15.88 mm (5/8")	400(29 ft•lb)

Outdoor unit		Indoor unit
A	Gas pipe side	C
B	Liquid pipe side	D

3Connect the charging hose of low pressure side of manifold gauge to the

packed valve having a service port as shown at the figure.

4 Open the valve of the low pressure side of manifold gauge counter clockwise.

5Purge the air from the system using vacuum pump for about 10 minutes.

◆ Close the valve of the low pressure side of manifold gauge clockwise.
◆ Make sure that pressure gauge show -0.1MPa(-76cmHg) after about
10 minutes. This procedure is very important in order to avoid gas leak.
◆ Turn off the vacuum pump.	Vacuum
◆ Remove the hose of the low pressure side of manifold gauge	pump
maintaining a vacuum.

6	Set valve cork of both liquid side and gas side of packed valve to the	A(gas)
	open position.	B(liquid)
7	Mount the valve stem nuts and the service port cap to the valve, and
	tighten them at the torque of 183kgf•cm(13ft•lb) with a torque wrench.
8	Check for gas leakage.
	◆ At this time, especially check for gas leakage from the 3-way valve’s
	stem nuts(A port), and from the service port cap.	3-way valve
		E-49