Bedienungsanleitung Airwell Multisplit YAZE QUATTRO DCI (Seite 7 von 13) (Englisch)

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EVACUATION OF THE REFRIGERATION TUBES AND THE

INDOOR UNIT

After connecting the unions of the indoor and outdoor units,

evacuate the air from the tubes and indoor unit as follows:

1. Connect the charging hoses with a push pin to the low and

high sides of the charging set and the service ports of the

suction and liquid valves.

Be sure to connect the end of the charging hose with the

push pin to the service ports.

2. Connect the center hose of the charging set to a vacuum

pump.

3. Open Fully the low and high pressure sides of the manifold

gauge valves.

4. Turn on the vacuum pump. Perform evacuating for at least

30 minutes and than confirm that the needle in the gauge

moves from 0 MPa (0cm Hg) to -0.1 MPa (-76cm Hg).

5. Close the valves of the low and high sides of the charging

set and turn off the vacuum pump. After few minutes, if the

gauge needle has moved, there is a leak which must be

found and repaired before moving to the next stage.

6. Disconnect the charging hose from the vacuum pump and

from the service ports of the suction and liquid valves.

7. Tighten the service port caps of suction and liquid valves.

8. Remove the valve caps from all valves, and open them

using a hexagonal Allen wrench.

9. Securely tighten the caps onto all of the valves.

10. Check for gas leaks from all the connecting position. Test

with electronic leak detector or with a sponge immersed in

soapy water for bubbles.

Fig 9

Fig 10

Fig 11

Tightening

torques of unions

and valve caps:

TUBE SIZE

Liquid line 1/4"

Suction line 3/8"

Suction line 1/2"

Suction line 5/8"

TORQUE

15-20 N.M.

30-35 N.M.

50-54 N.M.

75-78 N.M.

Fig.9

1.Wrench

2.Torque wrench

3 Union.

Fig.10

To prevent refrigerant

leakage, coat the flared

surface with

refrigeration oil

Fig.11

1.Suction valve

2.Service port

3.Liquid valve

5. Cap

6. Suction valve

7. Service valve

8. Cap

9. Liquid valve

10. INDOOR UNIT

11. Suction flare connection

12. Liquid flare connection

Fig.12

1. Charging set

2. Vacuum pump

3. OUTDOOR UNIT

4. Service valve

Fig 12

CONNECT THE INDOOR TO THE OUTDOOR UNIT

The indoor unit contains a small quantity of nitrogen. Do

not unscrew the nuts from the unit until you are ready to

connect the tubing. The outdoor unit is supplied with

sufficient refrigerant charge (R410A). Refer to outdoor unit

nameplate.

To prevent crushing, bend tubes using a bending tool.

REFRIGERANT TUBING

NOTE: Use refrigeration type copper tubing only.

2. Use tubing diameter that corresponds to the tubing

diameter of the indoor and outdoor units. Note that the

liquid and suction tubes have different diameters. (See

tube size, torque tightening table.)

3. Place flares nuts on tube ends before preparing them

with a flaring tool. Use the flare nuts that are mounted

on the supplied outdoor and indoor units.

4. Connect the all ends of the tubing to the indoor and

outdoor units.

5. Insulate each tube separately, and their unions, with at

least 6 mm thick of insulation. Wrap the refrigerant

tubing, drain hose and electric cables together with a

vinyl tape (UV protected).

R410A

1. Open the valve cover.

Notice the sign. All ends should

correspond one by one.

Caution!

When unscrewing the

valve caps, do not

stand in front of them or

the spindles at any time,

as the system is under

pressure.

Fig.8

1.INDOOR UNIT

2.Liquid tube (small dia.)

3.Suction tube (large dia.)

4.Plugs

5.Flare nuts

6.Tubing between units

7.Suction tube

8.Liquid tube

9.OUTDOOR UNIT

10.Flare nuts

11.Suction valve (larger)

12.Liquid valve (small)

Fig 8

NOTE: 1. For trio unit use connections

A,BandD

2. For large indoor unit of 5.0KW

Use the lower connection (unit D)

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