COMPLETING THE INSTALLATION

Connecting Up and Purging the Circuit

The outdoor unit is loaded with sufficient R22 refrigerant for 5m(16ft. 5in) 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.

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 first manually and then with a wrench, applying the following torque.

Pipe

Outer Diameter

Torque

Liquid refrigerant

6.35 mm(1/4˝)

160kg•cm(11.6ft•lb )

Gas refrigerant

9.52 mm(3/8˝)

300kg•cm(21.8ft•lb )

Gas refrigerant

12.70 mm(1/2˝)

500kg•cm(36.4ft•lb )

3Connect the charging hose of low pressure side of manifold gauge to the packed valve having a service port as shown at the figure.

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

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

-10minutes.

-This procedure is very important in order to avoid gas leak.

-Turn off the vacuum pump

-Remove the hose of the low pressure side of manifold gauge.

6Set valve cork of both liquid side and gas side of packed valve to the open position.

7Mount the valve stem nuts and the service port cap to the valve, and tighten them at the torque of 18N•m with a torque wrench.

8Check for gas leakage.

-At this time, especially check for gas leakage from the 3-way valve’s stem nuts, and from the service port cap.

ENGLISH

Outdoor unit

Indoor unit

A

Gas pipe side

C

B

Liquid pipe side

D

Indoor

A-unit

Indoor

B-unit

A

B

Vacuum Pump

The designs and shape are subject to change according to the model.

Valve stem

Liquid side

Stem cap

Gas side

Service port

You can install 15m of connecting pipe to the maximum, and you don’t have to charge any additional refrigerant.

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Samsung AM27B1C13, UM18B1C2, UM26B1C2 Connecting Up and Purging the Circuit, Use Vacuum Pump as shown at the figure

AM26B1C13, AM27B1C07, AM27B1C13, UM27B1C3, UM26B1C2 specifications

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