Quietside QSCC-183 Installation Manual download pdf (Page 13)

E-13

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.

Connect each assembly pipe to the appropriate valve on the outdoor unit and

tighten the flare nut.

Tighten 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)

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 5/16 inch(7.94mm).

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

Purge 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.

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

Mount 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.

Check for a gas leak paying particular attention to the 3-way valve’s stem nuts

and to the service port cap.

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.

(liquid)

Stem cap

Valve stem

(gas)

5/16 inch (7.94mm)

If you use a

pipe…

Then…

09/12 18/24

longer than

24.6ft (7.5m)

You can install 49.2ft(15m)

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 0.16oz(15g) of refrigerant R410A

additionalyfor each extra feet(metre).

shorter than

24.6ft (7.5m)

The purge time is normal. The purge time is normal.

Vivace1,2_KCV_Inv_DB98-27560A_IM_E.indd 13 2007-3-13 18:51:46

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Quietside QSCC-183 Installation Manual Page 13

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