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Outdoor Unit

In document Indoor Unit Outdoor Unit CS-HZ9RKE (сторінка 37-41)

12. Installation Instruction

12.3 Outdoor Unit

12.3.2.2 Connecting the piping to Outdoor

Decide piping length and then cut by using pipe cutter.

Remove burrs from cut edge.

Make flare after inserting the flare nut (locate at valve) onto the copper pipe.

Align center of piping to valve and then tighten with torque wrench to the specified torque as stated in the table.

12.3.3 Evacuation of the Equipment

WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES in the following procedure.

Do not purge the air with refrigerants but use a vacuum pump to vacuum the installation.

There is no extra refrigerant in the outdoor unit for air purging.

Lo Hi

OPEN

CLOSE Gas side Liquid side

Outdoor unit Two-way valve

Three- way valve Indoor unit

Vacuum pump

Close Close

1 Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-way valve.

o Be sure to connect the end of the charging hose with the push pin to the service port.

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

3 Turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves from 0 cmHg (0 MPa) to -76 cmHg (-0.1 MPa). Then evacuate the air approximately ten minutes.

4 Close the Low side valve of the charging set and turn off the vacuum pump. Make sure that the needle in the gauge does not move after approximately five minutes.

Note : BE SURE TO TAKE THIS PROCEDURE IN ORDER TO AVOID REFRIGERANT GAS LEAKAGE.

5 Disconnect the charging hose from the vacuum pump and from the service port of the 3-way valve.

6 Tighten the service port caps of the 3-way valve at a torque of 18 N•m with a torque wrench.

7 Remove the valve caps of both of the 2-way valve and 3-way valve. Position both of the valves to “OPEN”

using a hexagonal wrench (4 mm).

8 Mount valve caps onto the 2-way valve and the 3-way valve.

o Be sure to check for gas leakage.

 If gauge needle does not move from 0 cmHg (0 MPa) to -76 cmHg (-0.1 MPa), in the step  above take the following measure:

- If the leak stops when the piping connections are tightened further, continue working from step .

- If the leak does not stop when the connections are retightened, repair location of leak.

- Do not release refrigerant during piping work for installation and reinstallation.

- Take care of the liquid refrigerant, it may cause frostbite.

Do not overtighten, overtightening may cause gas leakage

Piping size Torque

6.35 mm (1/4”) [18 N•m (1.8 kgf•m)]

9.52 mm (3/8”) [42 N•m (4.3 kgf•m)]

12.7 mm (1/2”) [55 N•m (5.6 kgf•m)]

15.88 mm (5/8”) [65 N•m (6.6 kgf•m)]

19.05 mm (3/4”) [100 N•m (10.2 kgf•m)]

12.3.4 Connect the cable to the Outdoor Unit

1. Remove the control board cover from the unit by loosening the screw.

2. Connect cables to the unit.

12.3.4.1 In case of indoor power supply

3. Connection cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 × 1.5 mm

2

flexible cord, type designation 60245 IEC 57 or heavier cord. Do not use joint connection cable. Replace the wire if the existing wire (from concealed wiring, or otherwise) is too short. Allowable connection cable length of each indoor unit shall be 30 mm or less.

Terminals on the indoor unit Colour of wires (connection cable) Terminals on the outdoor unit Terminals on the isolating devices (Disconnecting means)

(Power supply cord)

L N 1 2 3

(L) (N)

1 2 3

L N

4. Secure the cable onto the control board with the holder (clamper).

5. Attach the control board cover back to the original position with screw.

Terminal Board Control

Board Earth wire longer than others AC wires for safety reason Holder

Indoor & outdoor connection cable

indoor unit

12.3.4.2 In case of outdoor power supply

3. Cable connection to the power supply through Isolating Devices (Disconnecting means).

 Connect approved type polychloroprene sheathed power supply cord 3 × 1.5mm

2

type designation 60245 IEC 57 or heavier cord to the terminal board, and connect the others end of the cord to Isolating Devices (Disconnecting means).

 Do not use joint power supply cord. Replace the wire if the existing wire (from concealed wiring, or otherwise) is too short.

 In unavoidable case, joining of power supply cord between isolating devices and terminal board of air conditioner shall be done by using approved socket and plug with earth pin rated 16A. Wiring work to both socket and plug must follow to national wiring standard.

4. Connection cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 × 1.5 mm

2

flexible cord, type designation 60245 IEC 57 or heavier cord. Do not use joint connection cable. Replace the wire if the existing wire (from concealed wiring, or otherwise) is too short. Allowable connection cable length of each indoor unit shall be 30 mm or less.

5. Connect the power supply cord and connection cable between indoor unit and outdoor unit according to the

diagram below.

Terminals on the indoor unit Colour of wires (connection cable) Terminals on the outdoor unit

Terminals on the isolating devices (Disconnecting means)

(Power supply cord)

L N 1 2 3

(L) (N)

1 2 3

L N

6. Secure the power supply cord and connection cable onto the control board with the holder.

7. Attach the control board cover back to the original position with screw.

Terminal Board

Control Board Earth wire longer than others AC wires for safety reason Holder

Indoor & outdoor connection cable Isolating

Devices Indoor unit

Power supply cord

 For wire stripping and connection requirement, refer to instruction  of indoor unit.

 Isolating Devices (Disconnecting means) should have minimum 3.0 mm contact gap.

 Earth wire shall be Yellow/Green (Y/G) in colour and longer than other AC wires for safety reason.

12.3.5 Piping Insulation

1 Please carry out insulation at pipe connection portion as mentioned in Indoor/Outdoor Unit Installation Diagram. Please wrap the insulated piping end to prevent water from going inside the piping.

2 If drain hose or connecting piping is in the room (where dew may form), please increase the insulation by using POLY-E FOAM with thickness 6 mm or above.

12.3.5.1 Outdoor Unit Drain Water

 Water will drip from the base pan hole area during defrost function.

 To avoid water dripping, do not stand or place objects at this area.

Hole

In document Indoor Unit Outdoor Unit CS-HZ9RKE (сторінка 37-41)