Hitachi RAM-72Q5 User Manual

Connect the earth cord

After remove the screw and cover, put the connecting cords and fix the cover with screw.

AC 220V — 240V ONLY

INDOOR 1

C1 D1 C2 D2 C3 D3 C4 D4

INDOOR 2 INDOOR 3 INDOOR 4

FOR SERVICE PERSONNEL ONLY

Screw for ground, earth screw

Outdoor Unit

Wiring Pattern

Indoor Unit

C1 D1

Indoor unit No. 1

Screw for ground, earth screw

For Indoor unit No. 1

Terminal board

Green-andYellow

C2 D2

Indoor unit No. 2

Screw for ground, earth screw

For Indoor unit No. 2

Terminal board

Green-andYellow

C3 D3

Indoor unit No. 3

Screw for ground, earth screw

For Indoor unit No. 3

Terminal board

Green-and-Yellow

Screw for ground, earth screw

C4 D4

Indoor unit No. 4

Screw for ground, earth screw

For Indoor unit No. 4

Terminal board

Green-and-Yellow

Power cord

Screw for ground, earth screw

Terminal board

Green-and-Yellow

10mm

Green-and-yellow (ground)

Power cord and connecting cord

Detail of cutting power cord

10mm

55mm

30mm

10mm

Green-and-yellow (ground)

Connecting cord

For Indoor Unit No. 1 (C1, D1), Indoor Unit No. 2 (C2, D2), Indoor Unit No. 3 (C3, D3) and Indoor Unit No. 4 (C4, D4)

10mm

85mm

60mm

●

Carefully read through the procedures of proper installation before starting installation work.

●

The sales agent should inform customers regarding the correct operation of installation.

SPLIT UNIT AIR CONDITIONER

INSTALLATION MANUAL

Outdoor Unit RAM-72Q5

SAFETY PRECAUTION

●

Read the safety precautions carefully before operating the unit.

●

The contents of this section are vital to ensure safety. Please pay special attention to the following sign.

WARNING ........ Incorrect methods of installation may cause death or serious injury.

CAUTION ......... Improper installation may result in serious consequence.

Make sure to connect earth wire. This sign in the figures indicates prohibition.

Be sure that the unit operates in proper condition after installation. Explain to customer the proper way of operating the unit as described in the user’s guide.

HFC

R410A

Tools Needed For Installation Work

(Mark is exclusive use tool for R410A)

●

+ – Screwdriver ● Measuring Tape ● Knife

Saw ● ø 65mm Power Drill ● Hexagonal Wrench

●

Key ( 4mm) Leakage Detector

●

Pliers ● Flare Tool Vacuum Pump Adapter

Manifold Valve Charge Hose Vacuum Pump

Wrench (14, 17, 22, 26mm) Gas

●

Pipe Cutter ● Putty ● Vinyl Tape

If you wish to prepare the copper tubes and insulation material in the field, we recommend the following.

No. Material Specification

Deoxidized annealed copper pipe with 6.35mm O.D., 0.8mm wall thickness.

Deoxidized annealed copper pipe with 9.52mm O.D., 1.0mm wall thickness.Large dia.

Deoxidized annealed copper pipe with 6.35mm O.D., 0.8mm wall thickness.Small dia.

1 Cooper tube

4.0kW or less

5.0kW or more

Small dia.

Deoxidized annealed copper pipe with 12.7mm O.D., 1.0mm wall thickness.Large dia.

●

4.0kW or less

Small dia.

2 Flare nut

5.0kW or more

Flare nuts with 6.35mm O.D..

Flare nuts with 9.52mm O.D..Large dia.

Flare nuts with 6.35mm O.D..Small dia.

Flare nuts with 12.7mm O.D..Large dia.

Foamed polyethylene insulation pipe which does not corrode the copper tube.

3 Insulation for refrigerating pipe

Large dia. pipe side: 15mm I.D.., 8mm wall thickness. Small dia. pipe side: 8mm I.D., 7mm wall thickness.

4 Connecting cord Refer to item 3.3.

5 Vinyl tape

6 Sealer (Putty)

7 Refrigerator oil

8 Bushing for refrigerating pipes

1. Proper place for installation

WARNING

●

Please request your sales agent or qualified technician to install your unit. Water leakage, short circuit or fire may occur if you do the installation work yourself.

●

Please observe the instructions stated in the installation manual during the process of installation. Improper installation may cause water leakage, electric shock and fire.

●

Make sure that the units are mounted at locations which are able to provide full support to the weight of the units. If not, the units may collapse and impose danger.

●

Observe the rules and regulations of the electrical installation and the methods described in the installation manual when dealing with the electrical work. Use power cables approved by the authorities of your country.

●

Be sure to use the specified wire for connecting the indoor and outdoor units. Please ensure that the connections are tight after the conductors of the wire are inserted into the terminals. Improper insertion and loose contact may cause over-heating and fire.

●

Please use the specified components for installation work. Otherwise, the units may collapse or water leakage, electric shock and fire may occur.

●

Be sure to use the specified piping set for R-410A. Otherwise, this may result in broken copper pipes or faults.

●

When installing or removing an air conditioner, only specified refrigerant (R410A) shall be allowed, do not allow air or moisture to remain in the refrigeration cycle. Otherwise, pressure in the refrigeration cycle may become abnormally high so that a rupture may be caused.

●

Be sure to ventilate fully if a refrigerant gas leak while at work. If the refrigerant gas comes into contact with fire, a poisonous gas may occur.

●

After completion of installation work, check to make sure that there is no refrigeration gas leakage. If the refrigerant gas leaks into the room, coming into contact with fire in the fan-driven heater, space heater, etc., a poisonous gas may occur.

●

Unauthorized modifications to the air conditioner may be dangerous. If a breakdown occurs please call a qualified air conditioner technician or electrician. Improper repairs may result in water leakage, electric shock and fire, etc.

●

Be sure to connect the earth wire from the power supply wire to the outdoor unit and between the outdoor and indoor unit. Improper earthing may cause electric shock.

1.1 Outdoor unit

(1) Keep the space around the unit for maintenance and avoiding the effects of hindrance for normal ventilation of the unit. (2) The northern or eastern side of the building is better to install. At the installation on the southern or western side unavoidably, some blind

should be set up for the unit. (In this case, the blind must not obstruct the ventilation of the unit.) (3) You’d better not put the unit at a place where is full of dirt and at a place where is wet in the rain. (4) Place as near as possible to the indoor unit. (5) Install the unit in a stable place to minimize vibration or noise. (6) After arranging the cords and pipes, secure them in place.

●

WARNING

2. In the electrical installation a separator with a contact gap of more than

3mm has to be installed. During cleaning or service the set has to be switched off with this separator.

This appliance must be earthed.

●

Power is supplied through outdoor unit, do not connect power source to indoor unit.

3.2 Connection of the connecting cords and power cord

(1) Cut off the connecting cord, the power cord and strip the

insulation of the wire, as shown in Fig. 3-2.

(2) Connect the connecting cord and power cord to the terminal

3. Installation procedure and notice

Especially, the selection of installation place need great care for the split type air conditioner, because it is very difficult to move from place to place after the first installation.

board. (Fig. 3-3)

(3) Fix the connecting cords and power cord with steel band

certainly. (Fig. 3-3)

3.1 Wiring

(1) Connect the electrical wiring between the Indoor and Outdoor unit,

as shown in Fig. 3-1. Never connect the wiring by mistake.

In case of wrong connection, the unit does not operate properly

and it may cause malfunction. (2) The connecting cord must be fixed by the band which is located

near the terminal board.

Procedures of Wiring

CAUTION

●

A circuit breaker must be installed in the house distribution box for the direct connected power supply wire to the outdoor unit. In case of other installations a main switch with a contact gap or more than 3.5mm has to be installed. Without a circuit breaker, the danger of electric shock exists.

●

Do not install the unit near a location where there is flammable gas. The outdoor unit may catch fire if flammable gas leaks around it.

●

Be sure to tighten the flare nut to the specified torque using a torque wrench. If the flare nut is tightened excessively, it may crack as time elapses, cause refrigerant leakage.

●

Please ensure smooth flow of water when installing the drain hose.

●

An IEC approved power cord should be used. Power cord type: NYM.

THE CHOICE OF MOUNTING SITE

●

The Outdoor unit must be mounted at a location which can support heavy weight. Otherwise, noise and vibration will increase.

●

Do not expose the unit under direct sunshine or rain. Besides, ventilation must be good and clear of obstruction.

●

The air blown out of the unit should not point directly to animals or plants.

●

The clearances of the unit from top, left, right and front are specified in figure below. At least 3 of the above sides must be open

(Please note the following matters and obtain permission from customer before installation).

WARNING

CAUTION

air.

●

Be sure that the hot air blown out of the unit and noise do not disturb the neighbourhood.

●

Do not install at a location where there is flammable gas, steam, oil and smoke.

●

The location must be convenient for water drainage.

●

Place the Outdoor unit and its connecting cord at least 1m away from the antenna or signal line of television, radio or telephone. This is to avoid noise interference.

Fig. 3-2

Fig. 3-1

WARNING

●

The naked part of the wire core should be 10 mm and fix it to the terminal tightly. Then try to pull the individual wire to check if the contact is tight. Improper insertion may burn the terminal.

●

Be sure to use only power cables approved from the authorities in your country. For example in Germany: Cable type: NYM 3x1.5mm = 16A time delay)

●

Please refer to the installation manual for wire connection to the terminals of the units. The cabling must meet the standards of electrical installation.

●

There is a AC voltage of 220-240V between the L and N terminals. Therefore, before servicing, be sure to remove the plug from the AC outlet or switch off the main switch.

Wiring of The Outdoor Unit

●

Please remove the side cover for wire connection.

. (fuse

Dimension of Mounting Stand

of the Outdoor unit

(unit: mm)

mounting stand

320

340

12 35

508

500

(10)

198

Figure showing the Installation of Outdoor Unit.

Height difference

Height difference between indoor units should be not more than 5m.

Indoor unit 3

Indoor unit 2

Indoor unit 1

Outdoor unit

Indoor unit 4

Outdoor unit

(L1 + L2 + L3 + L4) = Maximum 60m Minimum piping length for each indoor unit is 5m. Maximum piping length for one indoor unit is 25m.

In case the pipe length is more than 30m, add

refrigerant R410A at 20 gram per every meter exceeds.

 When removing side cover, pull the handle after releasing

the hook by pulling it downward.

Piping length

Indoor unit 1

Face this side (suction side) of the unit to the wall.

Remove side cover when connecting the piping and connecting cord.

Indoor unit 3

Indoor unit 4Indoor unit 2

●

If you cannot attach the side cover due to the connecting cord, press the connecting cord in direction to the front panel

WARNING

to fix it.

●

Be sure that the hooks of the side cover is fixed in certainly. Otherwise water leakage may occur and this causes short circuit or faults.

●

The connecting cord should not touch to service valve and pipes. (It becomes high temperature in heating operation.)

3.3 Checking for the electric source and the voltage range

●

Before installation, the power source must be checked and necessary wiring work must be completed. To make the wiring capacity proper, use the wire gauges list below for the lead-in from a pole transformer and for the wiring from a switch board of fuse box to the main switch and outdoor unit in consideration of the locked rotor current.

IMPORTANT

Cable length

up to 16m up to 15m up to 25m

Bind connecting cords to make them fit between the convex sections.

Wire cross-section

1.5mm

2.5mm

4.0mm

WARNING

●

Connect the Connecting Cord to C1 and D1 “Indoor 1” for indoor unit 1, C2 and D2 “Indoor 2” for indoor unit 2, C3 and D3 “Indoor 3” for indoor unit 3, C4 and D4 “Indoor 4” for indoor unit 4.

Pull downward

[Outdoor unit installation]

 Mount the Outdoor unit on stable ground to prevent vibration and increase of

noise level.

 Decide the location for piping after sorting out the different types of pipe available.

CAUTION

●

Make sure to connect to two or more indoor units.

One unit of 1.8kW, 2.5kW,

3.5kW or 5.0kW The flare adaptor for piping is required

Flare adaptor for piping

depending on combination of indoor

One unit of 1.8kW, 2.5kW, 3.5kW or 5.0kW (5kW unit: Optional flare adaptor for piping is necessary.)

Indoor unit 3 Indoor unit 2 Indoor unit 1Indoor unit 4

Outdoor unit pipe connection port

 To the outdoor unit, up to four indoor units can be connected until the total value of each units’s capacity reaches 11 kW.  The pipe connection ports of the outdoor unit and connectable indoor units are shown above.

IA93: A

One unit of 1.8kW, 2.5kW, 3.5kW, 5.0kW or 6.0kW (5kW, 6kW unit: Optional flare adaptor for piping is necessary.)

One unit of 1.8kW, 2.5kW, 3.5kW, 5.0kW or 6.0kW (2.5kW, 3.5kW unit: Optional flare adaptor for piping is necessary.)

units.

•ø9.52 (3/8”) ➝ ø 12.7 (1/2”)

Parts number TA261D-4 001

•ø12.7(1/2”) ➝ ø 9.52 (3/8”)

Parts number TA261D-6 002

CAUTION

Arrange power cord so they do not touch service valve.

Earth line

Type of grounding rod

SP-EB-2

Length

900mm

Fig. 3-3

Grounding rod (optional) (Earth wire and grounding rod are not supplied. Please use optional items below.)

●

Investigate the power supply capacity and other electrical conditions at the installation location. Depending on the model of room air conditioner to be installed, request the customer to make arrangements for the necessary electrical work etc. The electrical work includes the wiring work up the outlet. In localities where electrical conditions are poor, use of a voltage regulation is recommended.

IMPORTANT

Fuse Capacity

30A time delay fuse

4. Preparation of Pipe

●

Use a pipe cutter to cut the copper pipe.

Trimming tool

Copper pipe

●

Before flaring, please put on the flare nut.

Die

Copper pipe

●

Please use exclusive tool

5. Pipe Connection

7. Operation test

●

Please ensure that the air conditioner is in normal operating condition during the operation test.

CAUTION

●

Jagged edge will cause leakage.

●

Point the side to be trimmed downwards during trimming to

prevent copper chips from entering the pipe.

Outer Diameter (Ø)

6.35 (1/4”)

9.52 (3/8”)

12.7 (1/2”)

Imperial flaring tool

0.5mm

0 ~ 0.5mm

A (mm)

Rigid flaring tool

1.0mm

●

Explain to your customer the proper operation procedures as described in the user’s manual.

●

If the indoor unit does not operate, check to see that the connections are correct.

CAUTION

●

Trial run should be conducted on one unit at a time to check for incorrect wiring of connecting cord.

4 ROOM MULTI-SPLIT INVERTER TYPE ROOM AIR CONDITIONER POSSIBLE COMBINATION TO OPERATE (SAME TIME OPERATION)

(Reference value)

5.1 Pipe connection Connecting the pipe to outdoor unit

(1) Remove the flare nut and seal cap from the service valve. (2) Apply refrigerator oil to the service valve and the flared

portion of the pipe.

(3) Using a wrench, security tighten.

●

In case of removing flare nut of a indoor unit, first remove a nut of small diameter side, or seal cap of large diameter side will fly out. Free from water into the piping when working.

CAUTION

●

Please be careful when bending the copper pipe.

●

Screw in manually while adjusting the center. After that, use of torque wrench to tighten the connection.

Wrench

●

During connection, keep away from water.

●

Be sure to tighten the flare nut to the specified torque using a torque wrench. If the flare nut is tightened excessively, it may crack as time elapses, causing refrigerant leakage.

Flare nut

Torque wrench

Small diameter side

Large diameter side

Small diameter side

Valve head cap

Large diameter side

Valve core cap

Tighten all the way by hand.

Do not tighten all at once, but tighten it while fitting the flared surface to the pipe.

Outer diameter of pipe (Ø)

6.35 (1/4”)

9.52 (3/8”)

12.7 (1/2”)

6.35 (1/4”)

9.52 (3/8”)

12.7 (1/2”)

Torque N·m (kgf · cm)

13.7-18.6 (140-190)

34.3-44.1 (350-450)

44.1-53.9 (450-550)

19.6-24.5 (200-250)

29.4-34.3 (300-350)

12.3-15.7 (125-160)

COMBINATIONS

TO OPERATE

ONE UNIT

POSSIBLE

1.8

2.5

3.5

5.0

6.0

1.8 + 1.8

1.8 + 2.5

1.8 + 3.5

1.8 + 5.0

1.8 + 6.0

CAPACITY RATING

(kW) (RANGE)

1.80

2.50

3.50

5.00

6.00

1.80 + 1.80

1.80 + 2.50

1.80 + 3.50

1.80 + 5.00

1.70 + 5.40

TOTAL

1.80

2.50

3.50

5.00

6.00

3.60

4.30

5.30

6.80

7.10

COOLING

POWER

CONSUMPTION

OUTDOOR UNIT

(W)

450

650

1030

1640

2080

830

1120

1600

2420

2450

AMPERE

(A) at

220-240V

2.1 – 1.9

3.0 - 2.7

4.7 – 4.3

7.5 – 6.9

9.6 – 8.8

3.8 – 3.5

5.1 – 4.7

7.3 – 6.7

11.1 – 10.2

11.2 – 10.3

COP

4.00

3.85

3.40

3.05

2.88

4.34

3.84

3.31

2.81

2.90

●

Install the unit in a stable place to minimize vibration or noise.

●

After arranging the cords and pipes, secure them in place.

Pipe connection port for Indoor unit No. 1

Pipe connection port for Indoor unit No. 2

Pipe connection port for Indoor unit No. 3

Pipe connection port for Indoor unit No. 4

Gas leakage inspection

Please use gas leakage detector to check if leakage occurs at connection of flare nut as shown on the right. If gas leakage occurs, further tighten the connection to stop leakage. (Use the detector provided for R410A)

Connecting cord should have arranged with piping using tape previously.

Indoor unit No. 1

Indoor unit No. 2

Indoor unit No. 3

Indoor unit No. 4

TWO UNITS

1.8 + 1.8 + 1.8

1.8 + 1.8 + 2.5

1.8 + 1.8 + 3.5

1.8 + 1.8 + 5.0

1.8 + 1.8 + 6.0

2.5 + 2.5

2.5 + 3.5

2.5 + 5.0

2.5 + 6.0

3.5 + 3.5

3.5 + 5.0

3.5 + 6.0

5.0 + 5.0

5.0 + 6.0

2.50 + 2.50

2.50 + 3.50

2.40 + 4.70

2.10 + 5.00

3.50 + 3.50

2.90 + 4.20

2.60 + 4.50

3.55 + 3.55

3.20 + 3.90

1.80 + 1.80 + 1.80

1.80 + 1.80 + 2.50

1.80 + 1.80 + 3.50

1.50 + 1.50 + 4.10

1.35 + 1.35 + 4.40

5.00

6.00

7.10

7.00

7.10

5.40

6.10

7.10

1410

1950

2530

2450

2630

2530

2450

2530

2360

1250

1590

2210

2180

2160

6.5 – 5.9

9.0 – 8.2

11.6 – 10.6

11.2 – 10.3

12.1 – 11.1

11.6 – 10.6

11.2 – 10.3

11.6 – 10.6

10.8 – 9.9

5.7 – 5.3

7.3 – 6.7

10.1 – 9.3

10.0 – 9.2

9.9 – 9.1

3.55

3.08

2.81

2.90

2.66

2.81

2.90

2.81

3.01

4.32

3.84

3.21

3.26

3.29

6. Removal Of Air From The Pipe And Gas Leakage Inspection

6.1 Air purging by using vacuum pump

Remove the valve cap of valve core.

Connect the charge hoses to the

When the meter reaches -101KPa (-76cmHg) during pumping, fully tighten the shuttle.

Air purging by vacuum pump

vacuum pump and the charge port of the valve core large dia. pipe side service valve, respectively.

Fully open the LO knob of the manifold valve.

Stop valve

Charge hose

Run the vacuum pump.

Vacuum for more than 10 min.

Close the LO knob of the manifold valve.

When pumping starts, slightly loosen the flare nut to check of air sucked in. Then tighten the flare nut.

Stop the vacuum pump.

Meter showing pressure

Closed

Lo Hi

R410A Manifold valve

Stop valve

Vacuum pump adapter

Vacuum pump

Be sure the stop valve is always fully opened.

Fig. 6-1

1.8 + 2.5 + 2.5

1.8 + 2.5 + 3.5

1.8 + 2.5 + 5.0

1.8 + 2.5 + 6.0

1.8 + 3.5 + 3.5

THREE UNITS

1.8 + 3.5 + 5.0

2.5 + 2.5 + 2.5

2.5 + 2.5 + 3.5

2.5 + 2.5 + 5.0

2.5 + 2.5 + 6.0

2.5 + 3.5 + 3.5

2.5 + 3.5 + 5.0

3.5 + 3.5 + 3.5

1.8 + 1.8 + 1.8 + 1.8

1.8 + 1.8 + 1.8 + 2.5

1.80 + 2.50 + 2.50

1.65 + 2.25 + 3.20

1.40 + 1.90 + 3.80

1.25 + 1.70 + 4.15

1.40 + 2.85 + 2.85

1.25 + 2.40 + 3.45

2.36 + 2.36 + 2.36

2.10 + 2.10 + 2.90

1.80 + 1.80 + 3.50

1.60 + 1.60 + 3.90

1.90 + 2.60 + 2.60

1.60 + 2.25 + 3.25

2.36 + 2.36 + 2.36

1.77 + 1.77 + 1.77 + 1.77

1.60 + 1.60 + 1.60 + 2.30

6.80

7.10

2040

2210

2180

2160

2210

2180

2210

2180

2160

2210

2180

2140

9.4 – 8.6

10.1 – 9.3

10.0 – 9.2

9.9 – 9.1

10.1 – 9.3

10.0 – 9.2

10.1 – 9.3

10.0 – 9.2

9.9 – 9.1

10.1 – 9.3

10.0 – 9.2

9.8 – 9.0

3.33

3.21

3.26

3.29

3.21

3.26

3.21

3.26

3.29

3.21

3.26

3.32

Remove the valve cap from the spindle of the service valve.

Turn the spindles of each large and small dia. pipe side service valves full counterclockwise until they are securely tightened. Then retighten them more than 10 degrees [using a hexagon wrench key (4mm ) without fail].

Disconnect the charge hose from the service valve.

Attach the valve cap to the spindles of each large and small dia. pipe side service valves.

Valve cap

Valve cap of valve core

Valve cap

Stopper

O-Ring

Pipe

Seal cap

Flare nut

Valve cap

Spindle

Fig. 6-2

Valve cap of valve core

Valve core

Pipe

1.8 + 1.8 + 1.8 + 3.5

1.8 + 1.8 + 1.8 + 5.0

1.8 + 1.8 + 2.5 + 2.5

1.8 + 1.8 + 2.5 + 3.5

1.8 + 1.8 + 3.5 + 3.5

FOUR UNITS

1.8 + 2.5 + 2.5 + 2.5

1.8 + 2.5 + 2.5 + 3.5

2.5 + 2.5 + 2.5 + 2.5

2.5 + 2.5 + 2.5 + 3.5

* ONE UNIT INDICATED ARE ONLY FOR ONE UNIT OPERATION WHEN TWO OR THREE OR FOUR INDOOR UNITS ARE CONNECTED.

* TWO UNITS INDICATED ARE ONLY FOR TWO UNITS OPERATION WHEN TWO OR THREE OR FOUR INDOOR UNITS ARE

CONNECTED.

• THREE UNITS INDICATED ARE ONLY FOR THREE UNITS OPERATION WHEN THREE OR FOUR INDOOR UNITS ARE CONNECTED.

1.45 + 1.45 + 1.45 + 2.75

1.25 + 1.25 + 1.25 + 3.35

1.50 + 1.50 + 2.05 + 2.05

1.35 + 1.35 + 1.80 + 2.60

1.20 + 1.20 + 2.35 + 2.35

1.40 + 1.90 + 1.90 + 1.90

1.25 + 1.75 + 1.75 + 2.35

1.77 + 1.77 + 1.77 + 1.77

1.60 + 1.60 + 1.60 + 2.30

7.10

2140

2380

9.8 – 9.0

10.9 – 10.0

3.32

2.98

IA93: A

Fig. 6-3

The refrigerant channel is opened so that the refrigerant will flow from the outdoor unit into the indoor unit.

Hitachi RAM-72Q5 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual