Hitachi RAS-3HVRNME, RAS-8HRNM, RAS-5HRNM1E, RAS-6HRNM1E, RAS-10HRNM Service Manual

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UTOPIA DC-INVERTER IVX/ES SERIES H(V)RN(1)(S)(1)(E) H(V)RNM(1)(E)

Service Manual

RAS-(3-6)HVRNM(1)E RAS-(4-12)HRNM(1)(E) RAS-(2-3)HVRN(1)(E)(S) RAS-(4-6)HVRNS1E RAS-(8/10)HRNSE

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Page 3

I n d e x

Index

SMGB0060 rev. 1- 12/2010

General information

Unit Installation

Piping work and refrigerant charge

Electrical Wiring

Control System

Optional functions

Test Run

Troubleshooting

Spare Parts

Servicing

Electrical checks of main parts

Maintenace notes

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Index

SMGB0060 rev. 1- 12/2010

Page 5

Index

1 General information......................................................................................... 1

1.1 General information.................................................................................................................... 2

1.1.1 Copyright..................................................................................................................................... 2

1.1.2 Introduction................................................................................................................................. 2

1.1.3 Environment-friendly units.......................................................................................................... 2

1.2 Safety......................................................................................................................................... 3

1.2.1 Applied symbols.......................................................................................................................... 3

1.3 Product guide ............................................................................................................................ 4

1.3.1 Classification of IVX series outdoor unit models......................................................................... 4

1.3.2 Classification of ES series outdoor unit models.......................................................................... 4

1.3.3 Product guide: Outdoor units...................................................................................................... 5

1.3.4 Accessory code list..................................................................................................................... 6

2 Unit Installation................................................................................................ 7

2.1 Safety summary......................................................................................................................... 8

2.2 Transportation of outdoor unit.................................................................................................... 9

2.3 Center of gravity......................................................................................................................... 10

2.4 Factory-supplied accessories for RAS-(8-12)HRNM.................................................................. 11

2.5 Installation space (Initial ckeck).................................................................................................. 12

2.5.1 RAS-(2-3)HVRN(1)(E)(S)............................................................................................................ 12

2.5.2 RAS-(3-6)H(V)RNM(1)E / RAS-(4-10)HVRNS(1)E..................................................................... 16

2.5.3 RAS-(8-12)HRNM....................................................................................................................... 20

2.6 Place provision........................................................................................................................... 22

2.6.1 Place provision for RAS-(3-12)H(V)RNM(1)(E) and RAS-(4-10)H(V)RNS(1)E.......................... 22

2.6.2 Place provision only for RAS-(2-3)HVRN(1)(E)(S)..................................................................... 25

2.7 Optional parts and installation.................................................................................................... 28

2.7.1 Optional parts and installation for RAS-(2-3)HVRN(1)(E)(S)...................................................... 28

2.7.2 Optional parts and installation RAS-3HVRNME / RAS-(4-6)HVRNS1E..................................... 33

2.7.3 Optional parts and installation RAS-(4-6)H(V)RNM1E / RAS-(8/10)HRNSE.............................. 37

2.7.4 Optional parts and installation RAS-(8-12)HRNM....................................................................... 42

3 Piping work and refrigerant charge............................................................... 49

3.1 General notes............................................................................................................................. 50

3.2 Piping work connection considerations...................................................................................... 52

3.2.1 Piping Materials.......................................................................................................................... 52

3.2.2 Three principles on refrigerant piping work................................................................................. 54

3.2.3 Suspension of refrigerant piping................................................................................................. 54

3.2.4 Brazing work............................................................................................................................... 55

3.2.5 Refrigerant charge...................................................................................................................... 56

3.2.6 Caution of the pressure by check joint........................................................................................ 56

3.2.7 Refrigerant charge quantity......................................................................................................... 57

3.2.8 Pump down refrigerant................................................................................................................ 59

3.3 Outdoor Units IVX Series........................................................................................................... 60

3.3.1 Piping connection........................................................................................................................ 60

3.3.2 Refrigerant piping length............................................................................................................. 65

3.3.3 Refrigerant piping selection........................................................................................................ 66

Index

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3.3.4 Twin and triple system installation.............................................................................................. 67

3.3.5 Drain discharging boss............................................................................................................... 68

3.4 Outdoor Units ES Series............................................................................................................ 70

3.4.1 Piping connection........................................................................................................................ 70

3.4.2 Refrigerant piping length............................................................................................................. 75

3.4.3 Refrigerant piping selection........................................................................................................ 76

3.4.4 Twin and triple system installation.............................................................................................. 78

3.4.5 Connecting flare adapter (only for RAS-(2/2.5)HVRN1(E))........................................................ 79

3.4.6 Drain discharging boss............................................................................................................... 79

4 Electrical Wiring............................................................................................... 81

4.1 General check............................................................................................................................ 82

4.2 Electrical wiring for the outdoor unit IVX Series......................................................................... 83

4.2.1 Electrical wiring connection for the outdoor unit......................................................................... 83

4.2.2 Setting the DIP switches for the outdoor unit.............................................................................. 84

4.3 Electrical wiring for the outdoor unit ES Series.......................................................................... 88

4.3.1 Electrical wiring connection for the outdoor unit......................................................................... 88

4.3.2 Setting the DIP switches for the outdoor unit.............................................................................. 89

4.4 Electrical wiring between indoor unit and outdoor unit............................................................... 93

4.5 Wire sizes................................................................................................................................... 95

4.5.1 Wire sizes for IVX Series............................................................................................................ 95

4.5.2 Wire sizes for ES Series............................................................................................................. 97

4.5.3 H-LINK System........................................................................................................................... 98

4.6 Electrical wiring diagrams........................................................................................................... 108

4.6.1 Electrical wiring diagrams for IVX Series.................................................................................... 108

4.6.2 Electrical wiring diagrams for ES Series..................................................................................... 112

5 Control System................................................................................................ 117

5.1 Device control system................................................................................................................ 118

5.1.1 Device control system for IVX Series.......................................................................................... 118

5.1.2 Device control system for ES Series........................................................................................... 120

5.2 Outdoor units PCB..................................................................................................................... 122

5.2.1 Outdoor units PCB for IVX Series............................................................................................... 122

5.2.2 Outdoor units PCB for ES Series................................................................................................ 123

5.3 Protection and safety control...................................................................................................... 126

5.3.1 Protection and safety control for IVX Series............................................................................... 126

5.3.2 Protection and safety control for ES Series................................................................................ 127

5.4 Standard operation sequence.................................................................................................... 128

5.4.1 Standard operation sequence for IVX Series.............................................................................. 128

5.4.2 Standard operation sequence for ES Series............................................................................... 135

5.5 Standard control functions.......................................................................................................... 142

5.5.1 Standard control functions for IVX Series................................................................................... 142

5.5.2 Standard control functions for ES Series.................................................................................... 151

6 Optional functions........................................................................................... 161

6.1 Outdoor units IVX and ES series................................................................................................ 162

6.1.1 Available ports............................................................................................................................ 162

6.1.2 Configuration............................................................................................................................... 163

6.1.3 Description of optional input signals........................................................................................... 165

Index

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6.1.4 Description of optional output signals......................................................................................... 166

6.1.5 Optional functions....................................................................................................................... 167

7 Test Run........................................................................................................... 173

7.1 Checking procedure before the test run..................................................................................... 174

7.2 Test run procedure using the remote control switch.................................................................. 176

7.3 Test run procedure using the wireless remote control switch.................................................... 178

7.4 Test run procedure from the outdoor unit side........................................................................... 180

7.5 Check list.................................................................................................................................... 181

7.5.1 Check list for IVX Series............................................................................................................. 181

7.5.2 Check list for ES Series.............................................................................................................. 189

8 Troubleshooting.............................................................................................. 195

8.1 Initial troubleshooting for IVX an ES Series............................................................................... 196

8.1.1 Checking by means of the 7-segment display............................................................................ 196

8.1.2 Failure of the power supply to the indoor unit and the remote control switch............................. 197

8.1.3 Abnormal transmission between the remote control switch and the indoor unit......................... 198

8.1.4 Abnormal operation of the devices............................................................................................. 198

8.2 Troubleshooting procedure for IVX an ES Series...................................................................... 204

8.2.1 Alarm code ................................................................................................................................. 204

8.2.2 Troubleshooting in check mode.................................................................................................. 283

8.2.3 Troubleshooting by means of the 7-segment display................................................................. 290

8.2.4 Troubleshooting by means of the flashing alarm LEDs for RPK-FSNM..................................... 294

8.2.5 Cause of inverter stoppage......................................................................................................... 295

8.3 Procedure for checking each main part ..................................................................................... 299

8.3.1 Self-checking procedure of PCB by means of the Remote Control Switch................................ 299

8.3.2 Self-checking of the remote control switch................................................................................. 301

8.3.3 Self-Checking procedure of the Indoor Unit PCB (only for RPK)................................................ 303

9 Spare Parts....................................................................................................... 325

9.1 Spare parts for IVX Series.......................................................................................................... 326

9.2 Spare parts for ES Series........................................................................................................... 341

10 Servicing........................................................................................................... 353

10.1 Introduction................................................................................................................................. 354

10.2 Servicing for IVX series.............................................................................................................. 355

10.2.1 Outdoor unit RAS-3HVRNME..................................................................................................... 355

10.2.2 Outdoor units RAS-(4-6)H(V)RNM1E......................................................................................... 366

10.2.3 Oudoor units RAS-(8-12)HRNM................................................................................................. 379

10.3 Servicing for ES Series.............................................................................................................. 395

10.3.1 Outdoor Units RAS-(2/2.5)HVRN1(E) and RAS-3HVRNS.......................................................... 395

10.3.2 Outdoor Units RAS-(4-6)HVRNS1E............................................................................................ 402

10.3.3 Outdoor Units RAS-(8/10)HRNSE.............................................................................................. 414

11 Electrical checks of main parts...................................................................... 433

11.1 Inverter....................................................................................................................................... 434

11.1.1 Inverter for IVX Series................................................................................................................. 434

11.1.2 Inverter for ES Series.................................................................................................................. 439

11.2 Thermistor.................................................................................................................................. 445

11.3 Electronic expansion valve......................................................................................................... 447

Index

SMGB0060 rev. 1- 12/2010

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11.4 High pressure protection device................................................................................................. 448

11.5 Noise filter (NF).......................................................................................................................... 449

11.5.1 Noise filter for IVX Series............................................................................................................ 449

11.5.2 Noise filter for ES Series............................................................................................................. 450

11.6 Capacitor (CB1, CB2)................................................................................................................. 452

11.7 Reactor (DCL)............................................................................................................................ 453

11.7.1 Reactor (DCL) for IVX Series ..................................................................................................... 453

11.7.2 Reactor (DCL) for ES Series ...................................................................................................... 453

11.8 Scroll compressor....................................................................................................................... 455

11.8.1 Reliable mechanism for low vibrating and low sound................................................................. 455

11.8.2 Principle of compression............................................................................................................. 455

12 Maintenace notes............................................................................................. 457

12.1 Checking the power source and the wiring connection.............................................................. 458

12.2 Burnt-out compressor due to an insufficient refrigerant charge................................................. 459

12.3 Insufficient cooling performance when a long piping is applied................................................. 460

12.4 Abnormally high operation sound (in the ceiling type indoor unit).............................................. 461

12.5 Alarm code "31".......................................................................................................................... 462

12.6 Not cooling well due to insufficient installation space for the outdoor unit................................. 463

12.7 Caution with the refrigerant leakage........................................................................................... 464

12.7.1 Maximum permissible concentration of the HCFC gas............................................................... 464

12.7.2 Calculation of the refrigerant concentration................................................................................ 464

12.7.3 Countermeasure for the refrigerant leakage according to the KHK standard............................. 464

12.8 Maintenance work...................................................................................................................... 465

12.9 Service and maintenance record................................................................................................ 466

12.10 Service and maintenance record using the 7-segment display.................................................. 468

12.11 Service and maintenance record by remote control switch........................................................ 470

12.12 Pump-down method for replacing the compressor..................................................................... 472

Index

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1. G e n e r a l i n f o r m a t i o n

Index

1.1 General information.................................................................................................................... 2

1.1.1 Copyright....................................................................................................................................... 2

1.1.2 Introduction................................................................................................................................... 2

1.1.3 Environment-friendly units............................................................................................................. 2

1.2 Safety......................................................................................................................................... 3

1.2.1 Applied symbols............................................................................................................................ 3

1.3 Product guide ............................................................................................................................ 4

1.3.1 Classification of IVX series outdoor unit models........................................................................... 4

1.3.2 Classification of ES series outdoor unit models............................................................................ 4

1.3.3 Product guide: Outdoor units........................................................................................................ 5

1.3.4 Accessory code list....................................................................................................................... 6

1 General information

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1.1 General information

1.1.1 Copyright

No part of this publication may be reproduced, copied, filed or transmitted in any shape or form without the permission of HITACHI Air Conditioning Products Europe, S.A.

Within the policy of continuous improvement of its products, HITACHI Air Conditioning Products Europe, S.A. reserves the right to make changes at any time without prior notification and without being compelled to introducing them into products subsequently sold. This document may therefore have been subject to amendments during the life of the product.

HITACHI makes every effort to offer correct, up-to-date documentation. Despite this, printing errors cannot be controlled by HITACHI and are not its responsibility.

As a result, some of the images or data used to illustrate this document may not refer to specific models. No claims will be accepted based on the data, illustrations and descriptions included in this manual.

No type of modification must be made to the equipment without prior, written authorisation from the manufacturer.

1.1.2 Introduction

HITACHI offers the IVX and ES range of outdoor units, the main advantage of which is that they can be combined with UTOPIA series indoor units.

1.1.3 Environment-friendly units

This range of HITACHI outdoor units uses environmentally-friendly R410A gas refrigerant, and the RoHS and Green Dot regulations are applied throughout the manufacturing and installation process to reflect HITACHI's awareness of environmental respect and commitment.

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1.2 Safety

1.2.1 Applied symbols

During normal air conditioning system design work or unit installation, greater attention must be paid in certain situations requiring particular care in order to avoid damage to the unit, the installation or the building or property.

Situations that jeopardise the safety of those in the surrounding area or that put the unit itself at risk will be clearly indicated in this manual.

To indicate these situations, a series of special symbols will be used to clearly identify these situations.

Pay close attention to these symbols and to the messages following them, as your safety and that of others depends on it.

D A NG ER

• The text following this symbol contains information and instructions relating directly to your safety and physical wellbeing.

• Not taking these instructions into account could lead to serious, very serious or even fatal injuries to you and others in the proximities of the unit.

In the texts following the danger symbol you can also find information on safe procedures during unit installation.

C A UT IO N

• The text following this symbol contains information and instructions relating directly to your safety and physical wellbeing.

• Not taking these instructions into account could lead to minor injuries to you and others in the proximities of the unit.

• Not taking these instructions into account could lead to unit damage.

In the texts following the caution symbol you can also find information on safe procedures during unit installation.

N O TE

• The text following this symbol contains information or instructions that may be of use or that require a more thorough explanation.

• Instructions regarding inspections to be made on unit parts or systems may also be included.

1 General information

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1.3 Product guide

1.3.1 Classification of IVX series outdoor unit models

Unit type (Outdoor unit): RAS

Position-separating hyphen (fixed)

Capacity (HP): 3, 4, 5, 6, 8, 10, 12

H = Heat Pump

V=Single fase(1~)

R= Inverter system

N=R410A refrigerant

M=High Efficiency

Series

E = Made in Europe

– = Made in Japan

XXX – XX H V R N M 1 (X)

1.3.2 Classification of ES series outdoor unit models

Unit type (outdoor unit): RAS

Position-separating hyphen (fixed)

Capacity (HP): 2, 2.5, 3, 4, 5, 6, 8, 10

H = Heat Pump

V=Single Phase (1~)

R= Inverter system

N=R410A refrigerant

S= Eco&Small

Series

E = Made in Europe

– = Made in Japan

XXX – XX H V R N S 1 (X)

1 General information

SMGB0060 rev. 1- 12/2010

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1.3.3 Product guide: Outdoor units

¿ IVX series outdoor units

Outdoor Units IVX

Single Fase (1~) Three fase (3~)

HVRNME HVRNM1E HRNM1E HRNM

Unit Code Unit Code Unit Code Unit Code

RAS-3HVRNME 7E300005 RAS-4HVRNM1E 7E305007 RAS-4HRNM1E 7E305107 RAS-8HRNM 60278972

RAS-5HVRNM1E 7E305008 RAS-5HRNM1E 7E305108 RAS-10HRNM 60278973

RAS-6HVRNM1E 7E305009 RAS-6HRNM1E 7E305109 RAS-12HRNM 60278974

N O TE

• Check the exact classification for each unit (model, type, power and series) in Classification of IVX series

outdoor unit models, see on page 4.

¿ ES series outdoor units

Outdoor Units ES

Single Fase (1~) Three Fase (3~)

HVRN(1)(E)(S) HVRNS1E HRNSE

Unit Code Unit Code Unit Code

RAS-2HVRN1E 60288093 RAS-4HVRNS1E 7E306007 RAS-8HRNSE 7E314110

RAS-2.5HVRN1 60288094 RAS-5HVRNS1E 7E306008 RAS-10HRNSE 7E314111

RAS-3HVRNS 60288101 RAS-6HVRNS1E 7E306009

N O TE

• Check the exact classification for each unit (model, type, power and series) in Classification of ES series

outdoor unit models, see on page 4 .

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1.3.4 Accessory code list

HITACHI has a range of accessories and remote control systems that can be used with the UTOPIA outdoor units. Consult the Controls Technical Catalogue.

Name Description Code Figure

AG-335A Air outlet diffuser (one for each fan) 60291431

Images not available

WSP-335A Wind guard 60291432

ASG-NP335F Snow guard (one for each fan) 60291433

ASG-NP335B Snow guard (one for each fan) 60291434

ASG-NP335L Snow guard 60291435

DBS-26 Drain discharge connection 60299192

1 General information

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2. U n i t I n s t a l l a t i o n

Index

2.1 Safety summary......................................................................................................................... 8

2.2 Transportation of outdoor unit.................................................................................................... 9

2.3 Center of gravity......................................................................................................................... 10

2.4 Factory-supplied accessories for RAS-(8-12)HRNM.................................................................. 11

2.5 Installation space (Initial ckeck).................................................................................................. 12

2.5.1 RAS-(2-3)HVRN(1)(E)(S).............................................................................................................. 12

2.5.2 RAS-(3-6)H(V)RNM(1)E / RAS-(4-10)HVRNS(1)E....................................................................... 16

2.5.3 RAS-(8-12)HRNM......................................................................................................................... 20

2.6 Place provision........................................................................................................................... 22

2.6.1 Place provision for RAS-(3-12)H(V)RNM(1)(E) and RAS-(4-10)H(V)RNS(1)E............................. 22

2.6.2 Place provision only for RAS-(2-3)HVRN(1)(E)(S)........................................................................ 25

2.7 Optional parts and installation.................................................................................................... 28

2.7.1 Optional parts and installation for RAS-(2-3)HVRN(1)(E)(S)........................................................ 28

2.7.2 Optional parts and installation RAS-3HVRNME / RAS-(4-6)HVRNS1E....................................... 33

2.7.3 Optional parts and installation RAS-(4-6)H(V)RNM1E / RAS-(8/10)HRNSE................................ 37

2.7.4 Optional parts and installation RAS-(8-12)HRNM......................................................................... 42

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2.1 Safety summary

D A NG ER

• Install the outdoor unit with sufficient clearance around it for operation and maintenance as shown in the next pages.

• Install the outdoor unit where good ventilation is available.

• Do not install the outdoor unit where exists a high level of oil mist, salty air or sulphurous atmosphere.

• Install the outdoor unit as far as practical (being at least 3 meters) from electromagnetic wave radiator, such as medical equipment.

• Keep clearance between units of more than 50 mm, and avoid obstacles that could hamper air intake, when installing more than one unit together.

• Install the outdoor unit in the shade or not exposed to direct sunshine or direct radiation from high temperature heat source.

• Do not install the outdoor unit in a place where a seasonal wind directly blows into the outdoor fan.

• For cleaning, use non-inflammable and nontoxic cleaning liquid. Use of inflammable agent may cause explosion or fire.

• Work with sufficient ventilation, for working in an enclosed space could cause oxygen deficiency. Toxic gas may be produced when cleaning agent is heated to high temperature by, e.g., being exposed to fire.

• Cleaning liquid shall be collected after cleaning.

• Pay attention not to clamp cables when attaching the service cover to avoid electric shock or fire.

C A UT IO N

• Check the foundation to be flat, leveled and strongly enough.

• Install the unit in a restricted area not accessible by the general public.

• Aluminium fins have very sharp edges. Pay attention to the fins in order to avoid injury.

• Do not install the indoor units in a flammable environment to avoid a fire or an explosion.

• Check to ensure that the ceiling slab is strong enough. If not strong enough, the indoor unit may fall down on you.

• Do not install the indoor units, outdoor unit, remote control switch and cable within approximately 3 meters from strong electromagnetic wave radiators, such as medical equipment.

• Do not install the indoor units in a machinery shop or kitchen, where vapour from oil or mist flows to the indoor units. The oil will deposit on the heat exchanger, thereby reducing the indoor unit performance, and may deform. In the worst case, the oil damages the plastic parts of the indoor unit.

• To avoid any corrosive action to the heat exchangers, do not install the indoor units in an acid or alkaline environment.

• When lifting or moving the indoor unit, use appropriate slings to avoid damage and be careful not to damage the insulation material on units surface.

• This appliance must be used only by adult and capable people, having received the technical information or instructions to handle properly and safely this appliance.

• Turn OFF all power switches before maintenance is performed.

• Do not start the cleaning procedures before 5 minutes of the stop of the unit.

D A NG ER

• Avoid obstacles which may hamper the air intake or the air discharge flow.

• Children must be supervised to ensure that they do not play with the electrical appliances.

• Before obtaining access to terminals, all supply circuits bust be disconnected.

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2.2 Transportation of outdoor unit

D AN GE R

• Do not put any foreign material into the outdoor unit and check to ensure that none exists in the outdoor unit before the installation and test run. Otherwise, a fire or failure will occur.

Hanging Method

When hanging the unit, ensure the balance of the unit, check safety and lift it up smoothly. Do not remove any packing materials and hang the unit under packing condition with two ropes, as shown below.

RAS-3HVRNME RAS-(4-6)H(V)RNM1E

RAS-(2-3)HVRN(1)(E)(S) RAS-(8-12)HRNM

RAS-(4-6)HVRNS1E RAS-(8/10)HRNSE

1ABCD1ABC

1. Wire rope.

A. Over 60º.

B. 0.7 to 1.0 m.

C. Do not remove the plastic band or the corrugate paper frame.

D. Pass the wire ropes through each lifting hole in the wooden base as shown.

C A UT IO N

• Lift the outdoor unit in its factory packaging with 2 wire ropes.

• For safety reasons ensure that the outdoor unit is lifted smoothly and does not lean.

• Do not attach lifting equipment to the plastic band or the corrugated paper frame, because of the ropes will slip or break the materials.

• Ensure that the exterior of the unit is adequately protected with cloth or paper.

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2.3 Center of gravity

Hanging Method

RAS-(2-3)HVRN(1)(E)(S)

a. 515 mm

b. 180 mm

h. 275 mm

RAS-3HVRNME

a. 590 mm

b. 185 mm

h. 370 mm

RAS-(4-6)HVRNS1E

For 4 HP:

a. 635 mm

b. 180 mm

h. 335 mm

For 5-6 HP:

a. 630 mm

b. 190 mm

h. 360 mm

RAS-(4-6)H(V)RNM1E

a. 615 mm

b. 190 mm

h. 570 mm

RAS-(8-12)HRNM

a. 615 mm

b. 190 mm

h. 570 mm

RAS-(8/10)HRNSE

For 8 HP:

a. 325 mm

b. 206 mm

h. 565 mm

For 10HP:

a. 325 mm

b. 213 mm

h. 585 mm

1 Center of gravity

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2.4 Factory-supplied accessories for RAS-(8-12)HRNM

Make sure that the following accessories are packed with the unit.

N O TE

• If any of these accessories are not packed with the unit, please contact your dealer.

Accessory Appearance

Quantity

RAS-8HRNM RAS-10HRNM RAS-12HRNM

Gasket 1 1 1

Pipe flange for refrigerant

gas piping

1 1 1

Ring core 1 1 1

Cable tie 1 1 1

Compressed sheet 1 1 1

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2.5 Installation space (Initial ckeck)

2.5.1 RAS-(2-3)HVRN(1)(E)(S)

Blocked in Inlet Side

Upper Side Open

Single Installation Multiple Installation (Two units or more)

Pipe Cover

Ensure 250 mm or more of the side space on the pipe cover side. Allow 250 mm of space between units. Leave open both right and left sides.

Pipe Cover

Be sure to use the fan direction guide. Leave open both right and left sides.

Ensure 250 mm or more of the side space on the pipe cover side.

Be sure to use the fan direction guide.

Allow 250 mm of service space between units. Leave open both right and left sides. When subject to direct sunlight on the back wall, ensure the length marked with . be 400 or greater.

Ensure 250 mm or more of the side space on the pipe cover side.

Upper Side Blocked

Single Installation Multiple Installation (Two units or more)

Pipe Cover

Fifteen mm of space is acceptable for one of the lateral sides.

Ensure 250 mm or more of the side space on the pipe cover side.

Allow 250 mm of service space between units. Leave open both right and left sides.

Ensure 250 mm or more of the side space on the pipe cover side.

Be sure to use the fan direction guide. Leave open both right and left sides.

Ensure 250 mm or more of the side space on the pipe cover side.

Be sure to use the fan direction guide.

Allow 250 mm of service space between units. Leave open both right and left sides. Serial installation allowed up to two units.

Ensure 250 mm or more of the side space on the pipe cover side.

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Blocked in Inlet Side

The length A is as show in the following table:

L A

0<L=1/2H 500 or greater

1/2H<L≤H

1000 or greater

When L > H, use a base for outdoor unit to make L ≤ H.

Close the base not to allow the outlet air bypassed.

Outlet Side Blocked

Upper Side Open

Single Installation Multiple Installation (Two units or more)

Pipe Cover

Ensure 250 mm or more of the side space on the pipe cover side.

Allow 250 mm of service space between units. Both right and left sides shall be open.

Pipe Cover

Be sure to use the fan direction guide. Leave open both right and left sides.

Be sure to use the fan direction guide. Allow 250 mm of service space between units. Serial installation allowed up to two units.

Leave open both right and left sides.

The length A is as show in the following table:

L A

0<L=1/2H 100 or greater

1/2H<L≤H

200 or greater

When L > H, use a base for outdoor unit to make L ≤ H.

Close the base not to allow the outlet air bypassed.

The length A is as show in the following table:

L A

0<L=1/2H 150 or greater

1/2H<L≤H

250 or greater

When L > H, use a base for outdoor unit to make L ≤ H.

Close the base not to allow the outlet air bypassed.

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Lateral Side Blocked

Upper Side Open

Single Installation

Pipe Cover

Ensure 250 mm or more of the side space on the pipe cover side. Ensure 250 mm or more of the side space on the pipe cover side.

Upper Side Blocked

Pipe Cover

Ensure 250 mm or more of the side space on the pipe cover side. Ensure 250 mm or more of the side space on the pipe cover side.

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Single Installation Multiple Installation

Blocked in Inlet Side

Pipe Cover

Close the part A not to allow the outlet air bypassed. Install to avoid the drain water from upper unit falling on the lower unit.

Ensure 250 mm or more of the side space on the pipe cover side.

Allow 400 mm of service space above the top board.

Allow 250 mm of service space between units. Serial sideways installation allowed up to two units.

Leave open both right and left sides. Close the part A not to allow the outlet air bypassed. Install to avoid the drain water from upper unit falling on the lower unit.

Ensure 250 mm or more of the side space on the pipe cover side.

Allow 400 mm of service space above the top board.

Outlet Side Blocked

Pipe Cover

Be sure to use the fan direction guide. Close the part A not to allow the outlet air bypassed. Install to avoid the drain water from upper unit falling on the lower unit.

Ensure 250 mm or more of the side space on the pipe cover side.

Allow 400 mm of service space above the top board.

Be sure to use the fan direction guide. Allow 250 mm of service space between units. Serial side way installation allowed, but leave open both right and left sides. Close the part A not to allow the outlet air bypassed. Install to avoid the drain water from upper unit falling on the lower unit.

Ensure 250 mm or more of the side space on the pipe cover side.

Allow 400 mm of service space above the top board.

Multiple Installation in Multiple Rows

Ensure 250 mm or more of the side space on the pipe cover side. Allow 400 mm of service space above the top board.

The length A is as show in the following table:

L A

0<L=1/2H 150 or greater

1/2H<L≤H

250 or greater

When L > H, use a base for outdoor unit to make L ≤ H. Close the base not to allow the outlet air bypassed. Be sure to use the fan direction guide in order to ensure the length marked with ..

N O TE

• All units are in (mm).

• Do not stack more than two units in height.

• Close gap (*) to avoid recirculating discharge air flow.

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2.5.2 RAS-(3-6)H(V)RNM(1)E / RAS-(4-10)HVRNS(1)E

Blocked in Inlet Side

Upper Side Open

Single Installation Multiple Installation (Two units or more)

100 mm or more of the side space is acceptable on the service cover side. Dimensions in ( ) shows numbers especially for IVX 4-10 HP and ES 8/10 HP. 150 or more (200 or more) of the back space is acceptable when the right and left sides are open.

Allow 100 mm of space between units. Leave open both right and left sides.

Dimensions in ( ) shows numbers especially for IVX 4-10 HP and ES 8/10 HP.

Be sure to use the fan direction guide. Leave open both right and left sides.

Be sure to use the fan direction guide. Allow 100 mm of space between units. Leave open both right and left sides.

When subject to direct sunlight on the back wall, ensure the length marked with . be 500 or greater.

Upper Side Blocked

Single Installation Multiple Installation (Two units or more)

100 mm or more of the side space is acceptable on the service cover side.

Dimensions in ( ) shows numbers especially for IVX 4-10 HP and ES 8/10 HP.

Allow 100 mm of space between units. Leave open both right and left sides.

Dimensions in ( ) shows numbers especially for IVX 4-10 HP and ES 8/10 HP.

Be sure to use the fan direction guide.

Leave open both right and left sides.

Be sure to use the fan direction guide. Allow 100 mm of space between units. Leave open both right and left sides.

Serial installation allowed up to two units.

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Blocked in Inlet Side

The length A is as shown in the following table:

L A

0 < L ≤ 1/2H

600 or greater

1/2H < L≤ H

1200 or greater

Be sure to use the fan direction guide. Allow 100 mm of space between units. Leave open both right and left sides. Serial installation allowed up to two units.

Outlet Side Blocked

Upper Side Open

Single Installation Multiple Installation (Two units or more)

Allow 100 mm of space between units. Both right and left sides shall be open.

Be sure to use the fan direction guide. Leave open both right and left sides.

Be sure to use the fan direction guide. Allow 100 mm of space between units. Serial installation allowed up to two units. Leave open both right and left sides.

The length A is as shown in the following table:

L A

0 < L ≤ 1/2H ≤ 200

1/2H < L≤ H ≤ 300

When L > H, use a base for outdoor unit to make L ≤ H.

Close the base not to allow the outlet air bypassed.

The length A is as shown in the following table:

L A

0 < L ≤ 1/2H ≤ 250

1/2H < L≤ H ≤ 350

When L > H, use a base for outdoor unit to make L ≤ H.

Close the base not to allow the outlet air bypassed.

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Lateral Side Blocked

Upper Side Open

Single Installation

Upper Side Blocked

Stack installation (allowed up to 2 Units)

Upper Side Open

Single Installation Multiple Installation

Close the part A not to allow the outlet air bypassed. Install to avoid the drain water from upper unit falling on the lower unit.

Allow 100 mm of space between units. Serial sideways installation allowed up to two units. Leave open both right and left sides. Close the part A not to allow the outlet air bypassed. Install to avoid the drain water from upper unit falling on the lower unit.

Upper Side Blocked

Single Installation Multiple Installation

Be sure to use the fan direction guide. Close the part A not to allow the outlet air bypassed. Install to avoid the drain water from upper unit falling on the lower unit.

Be sure to use the fan direction guide. Allow 100 mm of space between units. Serial side way installation allowed. but leave open both right and left sides. Close the part A not to allow the outlet air bypassed. Install to avoid the drain water from upper unit falling on the lower unit.

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Multiple Installation in Multiple Rows

Serial Installation in Multiple Rows (E.g. Rooftop)

Allow approx. 100 mm of space from the side unit. Leave open both right and left sides.

The length A is as shown in the following table:

L A

0 < L ≤ 1/2H ≤ 200

1/2H < L≤ H ≤ 300

N O TE

When L > H, use a base for outdoor unit to make L = H. Close the base not to allow the outlet air bypassed. Be sure to use the fan direction guide in order to ensure the length marked with ..

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2.5.3 RAS-(8-12)HRNM

Single installation

Around sides are open Around sides are open with obstacles above

Around sides are closed

Around sides are open with obstacles above

Multiple installation

Around sides are open

Around sides are open with obstacles above

Multi-Row

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N O TE

• All units are in mm.

• Do not stack more than two units in the height.

• If L is larger than H, mount the units on a base so that H is equal or greater than L.

– H: Unit height (1650 mm) + base concret height

L A B

0 < L ≤ 1/2 H

600 or more 300 or more

1/2H < L ≤ H

— —

• In this situation, ensure that the base is closed and does not allow the airflow to short circuit.

• In each case, install the outdoor unit so that the discharge flow is not short-circuited.

• When the installation dimension results the one marked with an (*), mount the air flow guide.

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2.6 Place provision

2.6.1 Place provision for RAS-(3-12)H(V)RNM(1)(E) and RAS-(4-10)H(V)RNS(1)E

¿ Concrete foundation

• Foundation could be on flat and it is recommended to be 100-300 mm higher than ground level.

• Install a drainage around foundation for smooth drain.

• When installing the outdoor unit, fix it by M10 anchor bolts.

• When installing the unit on a roof or a veranda, drain water sometimes turns into ice on a cold morning. Therefore, avoid draining in an area that people often use because it may become slippery.

Metal plate for RAS-(3-6)H(V)RNM(1)E and RAS-(4-10)H(V)RNS(1)E

1 Outdoor unit. 2 Cut this portion of bolt If not, it’s difficult to remove Service

cover.

3 Mortar hole (Ø100 x Depth 150). 4 Anchor bolt M10 (Ø12.5 Hole). 5 Drainage (Wide 100 x Depth 150). 6 Drainage. 7 Vibration-proof rubber.

N O TE

• (*): Space for downward piping space.

Anchor bolt location in case of RAS-(8–12)HRNM

(1)

The whole base of the outdoor unit should be installed on a foundation. When using vibration-proof material, it should also be positioned in the same place. When installing the outdoor unit on a fieldsupplied frame, use metal plates to adjust the frame width for stable installation as shown in the figure below.

1. Outdoor unit is unstable

2. Frame.

3. Outdoor unit is stable.

4. Metal plate.

A. For RAS-(3-6)H(V)RNM(1)E 57 mm. Base width for outdoor unit.

For RAS-(4-10)H(V)RNS(1)E 70 mm. Base width for outdoor unit.

For RAS-(8-12)HRNM: 100 mm. Base width for outdoor unit.

B. 60 mm. Frame width (Field supplied).

C. For RAS-(3-12)H(V)RNM(1)(E) 100 mm or more Metal plate.

For RAS-(4-10)H(V)RNS(1)E: 70 mm or more Metal plate.

1234567

(1)

AB21AC234

INCORRECT CORRECT

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Recommended Metal Plate Size

• (Field-Supplied) Material: Hot-Rolled Mild Steel.

• Plate (SPHC) Plate Thickness: 4.5 T.

¿ Example of fixing outdoor unit by anchor bolts

1. Max. 21 mm (After cut “A”)

2. Concrete

3. Anchor bolt

B. Cut this portion when this type of anchor bolt is used. If not done, it will be dificult to remove the service cover

¿ Fix unit to the wall

1 Fix the unit onto the wall as shown in the figures (Field supplied bracket). 2 Secure the foundation to avoid noise and warping 3 To avoid vibrations transferring to the building, use a rubber mat.

RAS-3HVRNME

RAS-(4-6)H(V)RNM1E

RAS-(4-6)HVRNS1E RAS-(8-12)HRNM

RAS-(8/10)HRNSE

1. Rubber material

2. Fixing plate

N O TE

• (*): In RAS-(8-12)HRNM are 110 mm

Model

RAS-3HVRNME RAS-(4-6)HVRNS1E

RAS-

(4-6)H(V)RNM1E

RAS-(8-12)HRNM RAS-(8/10)HRNSE

A (mm) 529 796 529 1173 1109

B12

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¿ Suspended unit

1 Suspend the unit as shown in the figures. 2 Ensure that wall can withstand the weight of the outdoor unit indicated on the specifications plate. 3 It is advisable that each foot support should bear the full weight of the unit (in order take account of applied stress fatigue

when unit is operating).

RAS-3HVRNME

RAS-(4-6)H(V)RNM1E

RAS-(4-6)HVRNS1E RAS-(8-12)HRNM

RAS-(8/10)HRNSE

12312

1. Wall support

2. Anchor bolts

3. Supplied by the installer

C A UT IO N

• Follow these installation procedures carefully – The installation must be done so as to ensure that the outdoor unit does not lean, vibrate, make a noise or

fall in the event of strong gusts of wind or earthquakes. Calculate the resistance to vibration (caused by earthquakes) to guarantee that the installation is sturdy enough to prevent falls. Secure the unit with cables (field-supplied) when installing the unit in a place without walls or wind protection, and where it is likely to be exposed to gusts of wind.

– When using the vibration-proof rubber mat, secure it at four points on the front and back.

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¿ Installing location where the unit will be exposed to strong wind

Follow the instructions below to install on the roof or in a place which is not surrounded by buildings, and where the product may be buffeted by strong winds.

1 Select a place where the input or outlet side of the product is exposed to strong winds. 2 When the outlet is exposed to strong winds: Strong direct winds may cause a lack of air flow and negative effects on

the unit operation.

RAS-3HVRNME RAS-(4-6)H(V)RNM1E

RAS-(4-6)HVRNS1E RAS-(8-12)HRNM

RAS-(8/10)HRNSE

C A UT IO N

• An excessively strong wind blowing against the outlet of the outdoor unit may cause reverse rotation and damage to the fan motor.

2.6.2 Place provision only for RAS-(2-3)HVRN(1)(E)(S)

1 Secure the outdoor unit with the anchor

1. Base of outdoor unit

2. Nut

3. Special washer (M12)

4. Anchor bolts

5. Filled mortar

6. Concrete

A. Max. 17 mm

Fix the outdoor unit to the anchor bolts by special washer of factory-supplied accessory.

2 When installing the outdoor unit, fix the unit by anchor bolts.

Regarding the location of fixing holes.

1. M10 Hole for anchor bolt (Ø12)

2. Pipe cover

3. Front side

123

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Page 34

3 Example of fixing outdoor unit by anchor bolts.

1. Max. 17 mm (After cut “A”)

2. Concrete

3. Anchor bolt

B: Cut this portion when this type of anchor bolt is used. If not done, it will be difficult to remove the service cover

4 Provide an adequate drainage around the foundation. When installing the unit on a roof or a veranda, drain water may

turn to ice in a cold morning. Therefore, avoid draining in an area where people often use because it is slippery. In case of installing such a place, provide the additional drainage around the foundation.

1. Drain hole (30x80)

2. Drain hole (3-30x80)

3. Front side

5 The whole of the base of the outdoor unit should be installed on a foundation. When using vibration-proof mat, it should

also be positioned the same way. When installing the outdoor unit on a field-supplied frame, use metal plates to adjust the frame width for stable installation as shown in Figure.

1. Outdoor unit is unstable

2. Frame

3. Outdoor unit is stable

4. Metal plate

A. 57 mm. Base width of outdoor unit

B. 40 mm Frame width (Field-supplied)

C. 100 mm or more Metal plate

• Recommended Metal Plate Size: – (Field-Supplied) Material: Hot-Rolled Mild Steel.

– Plate (SPHC) Plate Thickness: 4.5 T

B12

AB21AC234

INCORRECT CORRECT

120

(560)

420

4-C10

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Installing location where the unit will be exposed to strong wind

Follow the instructions below to install on the rooftop or a location without surrounding buildings, where strong wind is expected against the product.

1 Choose a location where the outlet or inlet side of the product

will not be exposed to strong wind.

2 When the outlet is exposed to strong wind: Direct strong wind

may cause lack of air flow and adversely affect to normal function.

C A UT IO N

• Excessive strong wind against the outdoor unit outlet may cause inverse rotation and damage the fan and motor.

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2.7 Optional parts and installation

2.7.1 Optional parts and installation for RAS-(2-3)HVRN(1)(E)(S)

¿ Air flow guide, wind guard and snow protection hood

Optional parts HP Model

Air flow guide

2-3

AG-264

1 2

1 Air flow guide 2 Wind Guard 3 Snow protection hood

Wind guard

WSP-264

Snow protection

hood

Zinc Plate

Air outlet

2-3

ASG-NP80F

Air inlet of rear side ASG-NP56B

Air inlet of side face ASG-NP56L

Stainless plate

(NSSC180)

Air outlet

2-3

ASG-NP80FS2

Air inlet of rear side ASG-NP63B52

Air inlet of side face ASG-NP63LS2

¿ Air flow guide

Model

AG-264

Quantity 1 per unit

1 Mounting dimension 2 Air flow guide

Air discharge

direction

Upward (downward), left & right

Material Weather proof polypropylene resin

Color Gray

Weight 1.4 kg

Accessories

Fixing screw

4x [M5 (SUS) x 12]+4x [M5 (SUS) x 30]

Installation manual

Self-screw 2x [M4 x 13]

Installation

restriction

“Wind Guard” or “Snow protection hood” is not

available to install with air flow guide. (“Guard net” is

available to be installed together.)

Attaching example of air flow guide

• Attach the air flow guide to the air discharge grille with four (4) screws (supplied).

• The fixing holes are located at 4 positions on the grille. (Screw tightening torque 2.4 ~ 3.1 N.m)

• Do not remove the air discharge grille for air flow guide installation.

C A UT IO N

• If the air guide is installed without discharge grille, it may cause injury due to rotating fan.

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Locations of fixing holes

The holes Location shall be made by using self-screws (M4x13) and later shall be used SUS screw (M5x12) for fixing air flow guide.

1 Outdoor Unit 2 Hole (4 locations)

One flow guide installation

1 Air discharge grille 2 Air flow 3 Outdoor unit 4 M5 fixing screw x4 (Accessories) 5 Air flow guide

Service space (In case of upward air discharge)

• In case of right and left sides air discharge, enough space for air discharge is required.

• The downward air discharge is also available. In such case, install the base under the unit to secure enough space for air discharge.

• In case of serial units installation, air discharge should be upward.

1 Min.150 mm 2 Outdoor unit 3 Air flow guide 4 Passage side

12123445123

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¿ Wind guard

Specifications

Model WSP-264

Quantity 1 per unit

4-6x10 Long Hole

5 (Both Sides) - M5 Screw (attachement)

Material Galvanized sheet metal + baked painting

Color UTOPIA Beige

Weight 4.0 kg

Accessories

Fixing screw x 4 [M5 (SUS) x 30]- Unit

Fixing Screw x 10 [M5 (SUS) x 12]- Wind Ward

Installation manual

Installation

restriction

“Guard net”, “Air flow guide” or “Snow protection hood” is

not available to install with Wind guard

Attaching example of air wind guard

• Attach the air flow guide to the air discharge grille with four (4) screws (supplied).

• The fixing holes are located at 4 positions on the grille. (Screw tightening torque 2.4 ~ 3.1 N.m)

• Do not remove the air discharge grille for air flow guide installation.

C A UT IO N

• If the air guide is installed without discharge grille, it may cause injury due to rotating fan.

Two windguard covers installation

1 Air discharge grille 2 Outdoor unit 3 M5 fixing screw x4 (Accessories)

Service space

• Both sides of the outdoor unit should be open.

• No obstacles should be placed in the air discharge side.

1 Min.150 mm 2 Outdoor unit 3 Wind guard

1123123

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¿ Snow protection hood

Air discharge hood

Nº

Part name Quantity

1 Right side plate 1

2 Left side plate 1

3 Front panel 1

4 Fixing screw (Accessories)

5 Hole for safety wire rope to prevent overturning

Rear suction hood

Nº

Part name Quantity

1 Right side plate 1

2 Left side plate 1

3 Upper front panel (Upside) 1

4 Upper front panel (Downside). 1

5 Hole for safety wire rope to prevent overturning

6 Fixing screw (Accessories)

Left suction hood

Nº

Part name Quantity

1 Right side plate 1

2 Left side plate 1

3 Upper front panel (Upside) 1

4 Upper front panel (Downside). 1

12345

123

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Attaching example of snow protection hood

1 1

2 1

BA C

1. Fixing screw (accessories)

2. Air inlet hood

3. Wire rope (optional for over turning protection)

4. Air discharge hood

5. Outdoor unit

A. Rear side

B. Left side

C Front side

N O TE

• The holes locations marked with a mark shall be made by using sel screw (M4X13) and later shall be used SUS Screw for fixing protection hood.

Specifications of snow protection hood

Product name Air discharge hood Rear suction hood Left suction hood

Model ASG-NP80F ASG-NP80FS ASG-NP56B ASG-NP63BS2 ASG-NP56L ASG-NP63LS2

Quantity 1 per unit

Material

Bonderized steel

sheet

Iron

Stainless

(NSSC180)

Bonderized steel

sheet

Iron

Stainless

(NSSC180)

Bonderized steel

sheet

Iron

Stainless

(NSSC180)

Color

Gray (1.0Y8.5/0.5 or approximation)

—

Gray (1.0Y8.5/0.5 or approximation)

—

Gray (1.0Y8.5/0.5 or approximation)

—

Weight 3 kg 6 kg 3 kg

Assembling Knockingdown parts (assembled at field)

Components

Hood For air discharge part x 1 For rear side air intake x 1 For left side air intake x 1

Unit

Fixing screw

4 (M5x12 tapping screw) 5 (M5x12 tapping screw) 4 (M5x12 tapping screw)

Hood

Fixing screw

(SUS)

6 (M5x12 tapping

screw)

6 (M5x14)

14 (M5x12 tapping

screw)

14 (M5x14)

10 (M5x12 tapping

screw)

10 (M5x14)

Self-screw 2 (M4x13) 2 (M4x13) 2 (M4x13)

Installation manual

Installation restriction

Installation with “Guard net”, “Wind

guard” or is not available

Installation with “Guard net” is not available

Safety wire rope for overturning

prevention (optional parts)

ASG-SW20A

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Page 41

2.7.2 Optional parts and installation RAS-3HVRNME / RAS-(4-6)HVRNS1E

¿ Air flow guide, wind guard and snow protection hood

Optional parts HP Model

Air flow guide

4-6

AG-335A

1 2

1 Air flow guide 2 Wind Guard 3 Snow protection hood

Wind guard

WSP-335A

Snow protection

hood

Zinc plate

Air outlet

4-6

ASG-NP335F

Air inlet of rear side ASG-NP80B

Air inlet of side face ASG-NP80L

Stainless plate

(SUS304)

Air outlet

4-6

ASG-NP335F52

Air inlet of rear side ASG-NP160BS2

Air inlet of side face ASG-NP160LS2

¿ Air flow guide

Specifications

Model

AG-335A

Quantity 1 per unit

1 Mounting dimension 2 Air flow guide

Air discharge

direction

Upward (downward), left & right

Material Weather proof polypropylene resin

Color Gray

Weight 1.9 kg

Accessories

Fixing screw x 4 [M5 (SUS) x 20]

Installation manual

Installation

restriction

“Wind Guard” or “Snow protection hood” is not

available to install with air flow guide. (“Guard net”

is available to be installed together.)

Attaching example of air flow guide

• Attach the air flow guide to the air discharge grille with four (4) screws (supplied).

• The fixing holes are located at 4 positions on the grille. (Screw tightening torque 2.4 ~ 3.1 N.m)

• Do not remove the air discharge grille for air flow guide installation.

C A UT IO N

• If the air guide is installed without discharge grille, it may cause injury due to rotating fan.

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One flow guide installation

1 Air discharge grille 2 Air flow 3 Air flow guide 4 Outdoor unit 5 M5 fixing screw x4 (Accessories)

Service space (In case of upward air discharge)

• In case of right and left sides air discharge, enough space for air discharge is required.

• The downward air discharge is also available. In such case, install the base under the unit to secure enough space for air discharge.

• In case of serial units installation, air discharge should be upward.

1 Min. 200 mm 2 Outdoor unit 3 Air flow guide 4 Passage side

¿ Wind guard

Specifications

Model

WSP-335A

Quantity 1per unit

1 Mounting dimension 2 Air flow 3 3 4xØ7

Material

Galvanized sheet metal +

baked painting

Color Gray (1.0Y8.5/0.5)

Weight 5.5 kg

Accessories

Fixing screw

x 4 [M5 (SUS) x 12]

Installation manual

Installation

restriction

“Guard net”, “Air flow guide” or “Snow protection hood” is not available to install with Wind guard

123

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Page 43

Attaching example of air wind guard

• Attach the air flow guide to the air discharge grille with four (4) screws (supplied).

• The fixing holes are located at 4 positions on the grille. (Screw tightening torque 2.4 ~ 3.1 N.m)

• Do not remove the air discharge grille for air flow guide installation.

C A UT IO N

• If the air guide is installed without discharge grille, it may cause injury due to rotating fan.

One windguard cover installation

1 Air discharge grille 2 Wind guard 3 Air discharge grille 4 Outdoor unit 5 M5 fixing screw x4 (Accessories)

Service space

• Both sides of the outdoor unit should be open.

• No obstacles should be placed in the air discharge side.

1 Min. 200 mm 2 Outdoor unit 3 Wind guard

¿ Snow protection hood

Air discharge hood

Nº

Part name Quantity

1 Right side plate 1

2 Left side plate 1

3 Front panel 1

4 Stay 4

5 Fixing screw (Accessories)

6 Hole for safety wire rope to prevent overturning

123

12345

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Rear suction hood

Nº Part name Quantity

1 Right side plate 1

2 Left side plate 1

3 Upper front panel (Upside) 1

4 Upper front panel (Downside) 1

5 Fixing screw (Accessories)

6 Hole for safety wire rope to prevent overturning

Left suction hood

Nº

Part name Quantity

1 Right side plate 1

2 Left side plate 1

3 Front panel (Upside) 1

4 Front panel (Downside) 1

5 Fixing hole x 2

6 Fixing screw (Accessories)

A Enlarged view of A (Fixing Hole)

Attaching example of snow protection hood

11111234ABC56

1. Fixing screw (Accessories).

2. Rear suction hood

3. Wire rope (Optional. For overturning protection)

4. Air discharge grille

5. Left suction hood

6. Air discharge hood

A. Left side

B. Front side

C. Rear side

12345621345

AAA

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Page 45

Specifications of snow protection hood

Product name Air discharge hood Rear suction hood Left suction hood

Model ASG-NP335F ASG-NP335FS2 ASG-NP80B ASG-NP160BS2 ASG-NP80L ASG-NP160LS2

Quantity 2 per unit 1 per unit

Material

Bonderized steel

sheet

Iron

Stainless

(NSSC 180)

Bonderized steel

sheet

Iron

Stainless (NSSC

180)

Bonderized steel

sheet

Iron

Stainless (NSSC

180)

Color

Gray (1.0Y8.5/0.5

or approximation)

—

Gray (1.0Y8.5/0.5

or approximation)

—

Gray (1.0Y8.5/0.5 or approximation)

—

Weight 3 kg 14 kg 8 kg

Assembling Knockingdown parts (assembled at field)

Components

Hood For air discharge part x 1

For rear side air intake x 1

(Upper side x 1, lowe side x 1)

For left side air intake x 1

Unit Fixing

screw

4 (M5x12 tapping screw) 5 (M5x14 tapping screw) 6 (M5x12 tapping screw)

Unit Fixing

screw (SUS)

6 (M5x12 tapping

screw)

6 (M5x14)

12 (M5x12 tapping

screw)

12 (M5x14)

10 (M5x12 tapping

screw)

10 (M5x14)

Installation manual

Installation restriction

Installation with “Guard net” or “Wind guard”

is not available

Installation with “Guard net” is not available

Safety wire rope for overturning

prevention (optional parts)

ASG-SW20A

2.7.3 Optional parts and installation RAS-(4-6)H(V)RNM1E / RAS-(8/10)HRNSE

¿ Air flow guide, wind guard and snow protection hood

Optional parts

Model

Air flow guide AG-335A X 2

1 2

1 Air flow guide 2 Wind Guard 3 Snow protection hood

Wind guard

WSP-335A X 2

Snow

protection

hood

Zinc plate

Air outlet ASG-NP335F X 2

Air inlet of rear side ASG-NP280B

Air inlet of side face ASG-NP280L

Stainless plate

(NSSC 180)

Air outlet ASG-NP335FS 2X 2

Air inlet of rear side ASG-280BS2

Air inlet of side face ASG-NP280LS2

2 Unit Installation

SMGB0060 rev. 1- 12/2010

Page 46

¿ Air flow guide

Specifications

Model

AG-335A Image

Quantity 2 per unit

1 Mounting dimension 2 Air flow guide

Air discharge

direction

Upward (downward),

left & right

Material

Weather proof

polypropylene resin

Color Gray

Weight 1.9 kg

Accessories

Fixing screw x 4 [M5 (SUS) x 20]

Installation manual

Installation

restriction

“Wind Guard” or “Snow protection hood” is not available to install with air flow guide. (“Guard net” is available to be installed together.)

Attaching example of air flow guide

• Attach the air flow guide to the air discharge grille with four (4) screws (supplied).

• The fixing holes are located at 4 positions on the grille. (Screw tightening torque 2.4 ~ 3.1 N.m)

• Do not remove the air discharge grille for air flow guide installation.

C A UT IO N

• If the air guide is installed without discharge grille, it may cause injury due to rotating fan.

Two flow guides installation

1 Air discharge grille 2 Air flow 3 Air flow guide (see the note) 4 Outdoor Unit 5 M5 fixing screw x4 (Accessories)

N O TE

• Air flow direction of both air flow guides should be the same.

Service space (In case of upward air discharge)

• In case of right and left sides air discharge, enough space for air discharge is required.

• The downward air discharge is also available. In such case, install the base under the unit to secure enough space for air discharge.

• In case of serial units installation, air discharge should be upward.

1 Min. 200 mm 2 Outdoor unit

1223355

123

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Page 47

3 Air flow guide 4 Passage side

¿ Wind guard

Specifications

Model WSP-335A

Quantity 2 per unit

1 Mounting dimension 2 Air flow

Material

Galvanized sheet metal +

baked painting

Color Gray (1.0Y8.5/0.5)

Weight 5.5 kg

Accessories

Fixing screw

x 4 [M5 (SUS) x 12]

Installation manual

Installation

restriction

“Guard net”, “Air flow guide” or “Snow protection hood” is not available to install with Wind guard

Attaching example of air wind guard

• Attach the air flow guide to the air discharge grille with four (4) screws (supplied).

• The fixing holes are located at 4 positions on the grille. (Screw tightening torque 2.4 ~ 3.1 N.m)

• Do not remove the air discharge grille for air flow guide installation.

C A UT IO N

• If the air guide is installed without discharge grille, it may cause injury due to rotating fan.

Two windguard covers installation

1 Air discharge grille 2 Wind guard 3 Outdoor unit 4 M5 fixing screw x4 (Accessories)

11223

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Page 48

Service space

• Both sides of the outdoor unit should be open.

• No obstacles should be placed in the air discharge side.

1 Min. 200 mm 2 Outdoor unit 3 Wind guard

¿ Snow protection hood

Air discharge hood

Nº

Part name Quantity

1 Right side plate 1

2 Left side plate 1

3 Front panel 1

4 Stay 4

5 Fixing screw (Accessories)

6 Hole for safety wire rope to prevent overturning

Rear suction hood

Nº

Part name Quantity

1 Right side plate 1

2 Left side plate 1

3 Upper front panel (Upside) 1

4 Upper front panel (Downside) 1

5 Fixing screw (Accessories)

6 Hole for safety wire rope to prevent overturning

Left suction hood

Nº

Part name Quantity

1 Right side plate 1

2 Left side plate 1

3 Front panel (Upside) 1

4 Front panel (Downside) 1

5 Fixing hole x 2

6 Fixing screw (Accessories)

A Enlarged view of A (Fixing Hole)

123

12345

34215

AAA

21345

2 Unit Installation

SMGB0060 rev. 1- 12/2010

Page 49

Attaching example of snow protection hood

12222

ABC

3456677

1. Left suction hood

2. Fixing screw (Accessories)

3. Rear suction hood Upper side

4. Wire rope (Optional. For overturning protection)

5. Rear suction hood Lower side

6. Air discharge hood

7. Air discharge grille

8. Air discharge grille

A. Front side

B. Left side

C. Rear side

2 Unit Installation

SMGB0060 rev. 1- 12/2010

Page 50

Specifications of snow protection hood

Product name Air discharge hood Rear suction hood Left suction hood

Model ASG-NP335F ASG-NP335FS2 ASG-NP280B ASG-NP280BS2 ASG-NP280L

ASG-

NP280LS2

Quantity 2 per unit 1 per unit

Material

Bonderized steel

sheet

Iron

Stainless

(NSSC 180)

Bonderized steel

sheet

Iron

Stainless

(NSSC 180)

Bonderized steel

sheet

Iron

Stainless

(NSSC 180)

Color

Gray (1.0Y8.5/0.5 or approximation)

—

Gray (1.0Y8.5/0.5 or approximation)

—

Gray (1.0Y8.5/0.5 or approximation)

—

Weight 3 kg 14 kg 8 kg

Assembling Knockingdown parts (assembled at field)

Components

Hood For air discharge part x 1

For rear side air intake x 1

(Upper side x 1, lowe side x 1)

For left side air intake x 1

Fixing screw 4 (M5x12 tapping screw) 11 (M5x14 tapping screw) 8 (M5x12 tapping screw)

Fixing screw

(SUS)

6 (M5x14 tapping

screw)

6 (M5x14)

24 (M5x14 tapping

screw)

24 (M5x14)

12 (M5x12 tapping

screw)

12 (M5x14)

Installation manual

Installation restriction

Installation with “Guard net”, “Wind guard”

or “Air flow guide” is not available

Installation with “Guard net” is not available

Safety wire rope for overturning prevention

(optional parts)

ASG-SW20A

2.7.4 Optional parts and installation RAS-(8-12)HRNM

¿ Air flow guide, wind guard and snow protection hood

Optional parts

Model

Air flow guide AG-335A X 2

1 2

1 Air flow guide 2 Wind Guard 3 Snow protection hood

Wind guard

WSP-335A X 2

Snow protection

hood

Zinc plate

Air outlet ASG-NP335F X 2

Air inlet of rear side ASG-NP335B

Air inlet of side face ASG-NP335L

Strainless

plate

(NSSC 180)

Air outlet ASG-NP335FS2 X 2

Air inlet of rear side ASG-335BS2

Air inlet of side face ASG-NP335LS2

2 Unit Installation

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Page 51

¿ Air flow guide

Specifications

Model

AG-335A

Quantity 2 per unit

1 Mounting dimension 2 Air flow guide

Air discharge

direction

Upward (downward), left & right

Material Weather proof polypropylene resin

Color Gray

Weight 1.9 kg

Accessories

Fixing screw x 4 [M5 (SUS) x 20]

Installation manual

Installation

restriction

“Wind Guard” or “Snow protection hood” is not

available to install with air flow guide. (“Guard net” is

available to be installed together.)

Attaching example of air flow guide

• Attach the air flow guide to the air discharge grille with four (4) screws (supplied).

• The fixing holes are located at 4 positions on the grille. (Screw tightening torque 2.4 ~ 3.1 N.m)

• Do not remove the air discharge grille for air flow guide installation.

C A UT IO N

• If the air guide is installed without discharge grille, it may cause injury due to rotating fan.

Two flow guides installation

1 Air discharge grille 2 Air flow 3 Air flow guide (see the note) 4 Outdoor Unit 5 M5 fixing screw x4 (Accessories)

N O TE

• Air flow direction of both air flow guides should be the same.

Service space (In case of upward air discharge)

• In case of right and left sides air discharge, enough space for air discharge is required.

• The downward air discharge is also available. In such case, install the base under the unit to secure enough space for air discharge.

• In case of serial units installation, air discharge should be upward.

1 Min. 200 mm 2 Outdoor unit

1223355

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Page 52

3 Air flow guide 4 Passage side

¿ Wind guard

Specifications

Model WSP-335A

Quantity 2 per unit

1 Mounting dimension 2 Air flow

Material

Galvanized sheet metal +

baked painting

Color Gray (1.0Y8.5/0.5)

Weight 5.5 kg

Accessories

Fixing screw x 4 [M5 (SUS) x 12]

Installation manual

Installation restriction

“Guard net”, “Air flow guide” or “Snow protection hood” is not available to install with Wind guard

Attaching example of air wind guard

• Attach the air flow guide to the air discharge grille with four (4) screws (supplied).

• The fixing holes are located at 4 positions on the grille. (Screw tightening torque 2.4 ~ 3.1 N.m)

• Do not remove the air discharge grille for air flow guide installation.

C A UT IO N

• If the air guide is installed without discharge grille, it may cause injury due to rotating fan.

Two windguard covers installation

1 Air discharge grille 2 Wind guard 3 Outdoor unit 4 M5 fixing screw x4 (Accessories)

11223

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Service space

• Both sides of the outdoor unit should be open.

• No obstacles should be placed in the air discharge side.

1 Min. 200 mm 2 Outdoor unit 3 Wind guard

¿ Snow protection hood

Air discharge hood

Nº

Part name Quantity

1 Right side plate 1

2 Left side plate 1

3 Front panel 1

4 Stay 4

5 Fixing screw (Accessories)

6 Hole for safety wire rope to prevent overturning

Rear suction hood

Nº

Part name Quantity

1 Right side plate 1

2 Left side plate 1

3 Upper front panel (Downside) 1

4 Upper front panel (Upside) 1

5 Fixing screw (Accessories)

6 Hole for safety wire rope to prevent overturning

123

12345

320 320

888

868

250

270

2 Unit Installation

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Page 54

Left suction hood

Nº Part name Quantity

1 Right side plate 1

2 Left side plate 1

3 Front panel (upside) 1

4 Front side (downside) 1

5 Fixing hole x 2

6 Fixing screw (Accessories)

Attaching example of snow protection hood

12222

ABC

3455667

1100

1650

390

1. Left suction hood

2. Fixing screw (Accessories)

3. Rear suction hood Upper side

4. Wire rope (Optional. For overturning protection)

5. Air discharge hood

6. Air discharge grille

7. Rear suction hood Lower side

8. Outdoor unit

A. Front side

316

1587

250

230

347330330330235

296

8.5

Ø15

2 Unit Installation

SMGB0060 rev. 1- 12/2010

Page 55

B. Left side

C. Rear side

Specifications of snow protection hood

Product name Air discharge hood Rear suction hood Left suction hood

Model ASG-NP335F ASG-NP335FS2 ASG-NP335B ASG-NP335BS2 ASG-NP335L

ASG-

NP335LS2

Quantity 2 per unit 1 per unit

Material

Bonderized steel

sheet

Iron

Stainless

(NSSC180)

Bonderized steel

sheet

Iron

Stainless

(NSSC180)

Bonderized steel

sheet

Iron

Stainless

(NSSC180)

Color

Gray (1.0Y8.5/0.5 or approximation)

—

Gray (1.0Y8.5/0.5 or approximation)

—

Gray (1.0Y8.5/0.5 or approximation)

—

Weight 3 kg 14 kg 8 kg

Assembling Knockingdown parts (assembled at field)

Components

Hood For air discherge part x 1

For rear side air intake x 1

(Upper side x 1, lowe side x 1)

For left side air intake x 1

Fixing screw 4x(M5x12 l tapping screw) 10x (M5x14 l tapping screw) 8x (M5x12 l tapping screw)

Fixing screw

(SUS)

6x (M5x12 l tapping

screw)

6x (M5x14 l)

24x (M5x14 l

tapping screw)

24x (M5x14l)

14x (M5x12

tapping screw)

14x (M5x14)

Installation manual

Installation restriction

Installation with “Guard net”, “Wind guard”

or “Air flow guide” is not available

Installation with “Guard net” is not available

Safety wire rope for overturning prevention

(optional parts)

ASG-SW20A

2 Unit Installation

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Page 56

2 Unit Installation

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Page 57

3. P i p i n g w o r k a n d r e f r i g e r a n t c h a r g e

Index

3.1 General notes............................................................................................................................. 50

3.2 Piping work connection considerations...................................................................................... 52

3.2.1 Piping Materials............................................................................................................................. 52

3.2.2 Three principles on refrigerant piping work................................................................................... 54

3.2.3 Suspension of refrigerant piping................................................................................................... 54

3.2.4 Brazing work................................................................................................................................. 55

3.2.5 Refrigerant charge........................................................................................................................ 56

3.2.6 Caution of the pressure by check joint.......................................................................................... 56

3.2.7 Refrigerant charge quantity........................................................................................................... 57

3.2.8 Pump down refrigerant.................................................................................................................. 59

3.3 Outdoor Units IVX Series........................................................................................................... 60

3.3.1 Piping connection.......................................................................................................................... 60

3.3.2 Refrigerant piping length............................................................................................................... 65

3.3.3 Refrigerant piping selection........................................................................................................... 66

3.3.4 Twin and triple system installation................................................................................................ 67

3.3.5 Drain discharging boss.................................................................................................................. 68

3.4 Outdoor Units ES Series............................................................................................................ 70

3.4.1 Piping connection.......................................................................................................................... 70

3.4.2 Refrigerant piping length............................................................................................................... 75

3.4.3 Refrigerant piping selection........................................................................................................... 76

3.4.4 Twin and triple system installation................................................................................................ 78

3.4.5 Connecting flare adapter (only for RAS-(2/2.5)HVRN1(E))........................................................... 79

3.4.6 Drain discharging boss.................................................................................................................. 79

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Page 58

3.1 General notes

C A UT IO N

Do not install the drain-pipe in an up-slope position. Installing it like this, the drain water cannot be evacuated and will flow back to the unit, causing a possible leakage when the operation is stopped. Always install the unit higher than the exit of the pipe. Making this so, the water will flow easily to the outside.

INCORRECT

1. Rising part.

2. Up slope.

• Do not connect the drain pipe with the sanitary piping, the sewage piping or any other drainage piping.

• When the common drain piping is connected with other indoor units, the connected position of each indoor unit must be higher than the position of the common drain piping. The pipe section of the common drain pipe must be wide enough according to the unit size and the unit number.

CORRECT

1. Common drain piping.

2. Pitch of 4% (1/25) to 1% (1/100).

3. Drain piping connection.

• The drain pipe will require insulation if it is installed in a location where the ambient humidity may condensate on the drain pipe outer surface. This condensation could drop and cause damage. The insulation for the drain pipe must be selected in order to ensure that the vapour is sealed and in order to prevent the condensation forming.

• The drain trap should be installed next to the indoor unit, designed according to good practice and must be checked with charged water in order to test the correct flow. Do not tie or clamp the drain pipe and the refrigerant pipe together.

N O TE

• The installation of a drain tap is mandatory for the RPI/10.

• Install the drainage in accordance with national and local codes.

After installing the drain piping and the electrical wiring, make sure that the water flows smoothly as the following procedure explains:

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Checking the unit without the drain-up mechanism

1 Pour approximately 1.8 litres of water into the drain pan. 2 Make sure that the water flows smoothly and that no water leakage occurs. If you cannot find water at the end of the

drain pipe, once again pour approximately 1.8 litres of water into the drain pan.

Checking the unit with the drain-up mechanism and the float switch

1 Turn the power supply on. 2 Pour approximately 1.8 litres of water into the drain pan. Then, the float switch will be activated. Next, the drain pump

will start working automatically.

3 Make sure that the water flows smoothly and that no water leakage occurs. If you cannot find water at the end of the

drain pipe, pour again approximately 1.8 litres of water into the drain pan.

4 Turn the power supply off.

N O TE

Pay attention to the insulation material thickness when the left-side piping is installed. If the insulation material is too thick, you will not be able to install the piping in the unit.

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3.2 Piping work connection considerations

3.2.1 Piping Materials

1 In order to avoid supply problems in terms of local regulations and quality, prepare locally-supplied copper pipes.

N O TE

In case of using copper pipes for piping sections bigger than Ø19.05 mm (3/4 inches), flaring work cannot be performed. If necessary, use a joint adapter.

2 Select clean copper pipes. Make sure there is no dust and moisture inside. Blow the inside of the pipes through with

oxygen-free nitrogen to remove any dust and foreign materials before connecting pipes.

3 After connecting the refrigerant piping, seal the open space between the knockout hole and refrigerant pipes by using

insulation material as shown below:

A. Insulator material.

B. Field-supplied refrigeration pipe.

C A UT IO N

• Do not use saws, grindstones or other tools which cause copper powder.

• When cutting pipes, secure the part for brazing in accordance with both national and local regulations.

• Use security glasses and gloves for cutting or welding works.

Piping Connection

When connecting liquid piping for units with piping longer than 15 meters, apply a piping size of Ø9.53 mm (3/8 inches). Fix the connecting pipe as shown in the following figure using the insulation attached to the Indoor Unit.

A. Use the flare nut of the indoor unit.

B. Insulate this part with the attached insulation.

C. Fix this part with the attached cord band or with tape.

D. Field-supplied refrigerant piping.

E. Field-supplied insulation.

F. Brazing.

G. Make flares after attaching flare nut to the connecting pipe in the Multi-kit package.

H. Insulation attached to indoor unit.

I. Indoor unit.

N O TE

• A system with no moisture or oil contamination will give maximum performance and lifecycle compared to a poorly prepared system. Take particular care to ensure that all copper piping is clean and dry internally.

• To ensure this, blow oxygen-free nitrogen through the pipes.

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C A UT IO N

• When inserting a pipe through any hole protect the end with a cap.

• Do not put pipes on the ground directly without a cap or vinyl tape at the end of the pipe

Correct Incorrect

• If the piping installation is not completed until the next day or even over a longer period of time, braze off the ends of the piping and charge the pipe with oxygen-free nitrogen through a Schrader-valve-type access-fitting, to prevent moisture and particle contamination entering.

• Do not use insulation material that contents NH3. NH3 can damage the cooper pipe material and can be a source of future leakages.

Insulation

Attach the pipe insulation to each branch using vinyl tape. Attach also insulation to field supplied pipes in order to prevent the capacity decrease according to the ambient air conditions and dewing on the low pressure pipe surface.

1. Cap.

2. Field supplied insulation.

3. Do not make a gap.

N O TE

When polyethylene foam is applied, it is recommended the usage of a wall thickness of 10 mm for the liquid piping and 15 mm to 20 m for the gas piping.

C A UT IO N

• Perform the insulation work after the pipe surface temperature decreases to the room temperature, if not the insulation material may melt.

• If the ends of the piping system are open after ending the piping work, attach caps or vinyl bags securely to the ends of the piping, avoiding moisture and dust entering.

12113

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3.2.2 Three principles on refrigerant piping work

In case of using refrigerant R410A in the refrigeration cycle, the refrigeration oil should be of a synthetic type one.

In order to avoid oxidation, pay much careful attention to basic piping work control to avoid infiltration of moisture or dust during the refrigerant piping work.

Three principles Cause of failure Presumable failure Preventive action

1. Dry

Keep good dryness

• Water infiltration due to insufficient protection at pipe ends

Icing inside tube at ex. valve

(Water choking)

Pipe protection

+ 1 Pinching

• Dewing inside of pipes

Generation of hydration and oxidation

of oil

2 Taping

↓ ↓

• Insufficient vacuum pumping time

Clogged strainer, etc., insulation failure

and compressor failure

Flushing

↓

Vacuum Drying

• One gram of water turns into gas (approx. 1000 lrs) at 1 Torn

• Therefore, it takes long time to vacuum-pump by a small vacuum pump

2. Clean

No dust inside of pipes

• Infiltration of dust or other through the pipe ends.

• Oxidation film during brazing without blowing nitrogen.

• Insufficient flushing by nitrogen after brazing

Clogging of expansion valve, capillary

tube and filter

Pipe Protection

→Oxidation of oil

1 Mounting Caps

→Compressor failure

2 Taping

↓

3 Pinching

Insufficient cooling or heating

compressor failure

↓

Flushing

3. No leakage

No leakage shall exist

• Brazing failure

Refrigerant shortage Careful Basic Brazing Work

→Performance decrease

↓

• Failed flaring work and insufficient torque of squeezing flare

→Oxidation of oil

Basic Flaring Work

→Overheating of compressor

↓

• Insufficient torque of squeezing flanges

↓

Basic Flange Connecting Work

Insufficient cooling or heating

compressor failure

↓

Air Tight Test

↓

Holding of Vacuum

3.2.3 Suspension of refrigerant piping

Suspend the refrigerant piping at certain points and prevent the refrigerant piping from touching weak parts of the building such as walls, ceiling, etc. (If touched, abnormal noises may occur due to the vibration of the piping. Pay special attention in case of short piping length).

A. Fire-proof section treatment.

B. Indoor unit.

In order to fix the piping to wall or ceilings use suspension and clamping systems as shown in the following figure.

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3.2.4 Brazing work

The most important work in the refrigerant piping installation work is the brazing of the pipes. If it accidentally occurs a leakage due to a careless brazing process, it will cause clogged capillary pipes or serious compressor failure.

In order to guarantee a proper brazing neck between different pipes surfaces, accurate pipe dimensions after the expansion process (see the table below):

It is important to control the clearance of the pipe fitting portion as shown below. In the case that a cooper tube expansion jig is used, following dimensions should be secured.

Copper pipe size Ød1 Gap a Copper pipe size Ød1 Gap a

Ø6.35

+0.08

Ø6.5

+0.1 0.33

Ø22.22

+0.09

Ø22.42

+0.1 0.39

-0.08 0 0.07 -0.09 0 0.11

Ø9.53

+0.08

Ø9.7

+0.1 0.35

8 Ø25.4

+0.12

Ø25.6

+0.1 0.42

-0.08 0 0.09 -0.12 0 0.08

Ø12.7

+0.08

Ø12.9

+0.1 0.38

8 Ø28.58

+0.12

Ø28.78

+0.1 0.42

-0.08 0 0.19 -0.12 0 0.08

Ø15.88

+0.09

Ø16.1

+0.1 0.41

8 Ø31.75

+0.12

Ø32.0

+0.1 0.47

-0.09 0 0.13 -0.12 0 0.13

Ø19.05

+0.09

Ø19.3

+0.1 0.44

10 Ø38.1

+0.12

Ø38.3

+0.1 0.52

-0.09 0 0.16 -0.12 0 0.18

A basic brazing method is shown below.

1. Pre-heat the outer tube for better flowing of the filler metal.

2. Heat inner side tube evenly.

3. Rubber plug.

4. Packless valve.

5. High pressure hose.

6. 0.03 to 0.05 MPa (0.3 to 0.5 Kg/cm2 G).

7. Reducer valve: open this valve only when the gas is needed.

8. Nitrogen gas flow 0.05 m3/h or smaller.

C A UT IO N

• Use nitrogen gas for blowing during pipe brazing. If oxygen, acetylene or fluorocarbon gas is used, it will cause an explosion or poisonous gas.

• During the brazing work, a lot of oxidation film will be generated inside of the pipes if no oxygen-free nitrogen gas is blown through the pipes. This film will be flecked off after operation and will circulate in the refrigeration cycle, resulting in clogged expansion valves, etc. This could origin problems in the compressor.

• Use a reducer valve when nitrogen gas blowing is performed during brazing. The gas pressure should be maintained within 0.03 to 0.05 MPa. If an excessively high pressure is applied to a pipe, it could origin an explosion.

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3.2.5 Refrigerant charge

C A UT IO N

• Do not charge OXYGEN, ACETYLENE, or other flammable and poisonous gases into the refrigerant because an explosion will occur. It is recommended that oxygen free nitrogen be charged for these types of tests cycle when performing a leakage test or an airtight test. These types of gases are extremely dangerous.

• Insulate the unions and flare-nuts at the piping connection part completely.

• Insulate the liquid piping completely to avoid a decrease of performance; if not, it will cause sweating on the surface of the pipe.

• Charge refrigerant correctly. Overcharging or insufficient charging could cause a compressor failure.

• Check for refrigerant leakage in detail. If a large refrigerant leakage occurred, it would cause difficulty with breathing or harmful gases would occur if a fire were being used in the room.

• If the flare nut is tightened too hard, the flare nut may crack after a long time and cause refrigerant leakage.

3.2.6 Caution of the pressure by check joint

When the pressure is measured, use the check joint of gas stop valve (A), and use the check joint of liquid piping (B) in the figure below.

At that time, connect the pressure gauge according to the following table because of high pressure side and low pressure side changes by operation mode.

Cooling operation Heating operation

Check joint for gas stop valve -A- Low pressure High pressure

Check joint for piping -B- High pressure Low pressure

Check joint for liquid stop valve -C- Exclusive for vacuum pump and refrigerant charge

N O TE

Be careful that refrigerant and oil do not splash to the electrical parts at removing the charge hoses.

The below figures show examples of 3 HP and 5 HP:

• The one on the right is an RAS-5H(V)RNM1E case and the one in the left is an RAS-3HVRNME in case for IVX Series.

• The one on the right is an RAS-5HVRNS1E case and the one in the left is an RAS-3HVRNS in case of ES Series.

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3.2.7 Refrigerant charge quantity

¿ Refrigerant charge quantity for IVX series

Outdoor units has been charged with refrigerant for ℓ(m) of actual piping length. An additional refrigerant charged is required in systems with actual piping length longer than ℓ(m).

1 Determine an additional refrigerant quantity according to the following procedure, and charge it into the system. 2 Record the additional refrigerant quantity to facilitate service activities thereafter.

C AU T I O N

• When charging refrigerant accurately measure refrigerant to be charged.

• Overcharging or undercharging of refrigerant can cause compressor trouble.

• In case of actual piping length less than 5 m, consult your distributor.

Outdoor unit Factory Refrigerant charge (Wo Kg) is the next:

O/U MODEL

Wo (Kg) Chargeless Length ℓ(m) Additional Charge Factor (P)

RAS-3HVRNME 2.4 30 0.04

RAS-4H(V)RNM1E 3.9 30 0.06

RAS-5H(V)RNM1E 3.8 30 0.06

RAS-6H(V)RNM1E 3.8 30 0.06

1 Refrigerant shall be added if L is longer than the chargeless length shown in the table above.

Calculate the additional amount as follows:

A. 30 m.

B. 8 m.

C. 8 m.

• Chargeless Length ℓ: for 4HVRNM1E is 30 m according to

the table before.

• Additional Correction Value P : for 4HVRNM1E, “0.06”

according to the table above.

• Additional Charge amount W will be:

W = (L-ℓ) x P

Example: W1= (46-30) x 0.06 = 0.96 (kg)

2 Charge the amount W calculated by point 1. 3 Setting of pipe length DSW.

DSW2 setting will be required only when the refrigerant pipe length is shorter than 5 m or longer than 30 m. Pipe length setting shall be performed as shown below.

(The ■ side in the DIP switch show the position.)

DSW2 on outdoor PCB1

Factory setting Factory setting Factory setting

Piping length between 5 m and ℓ(m) Pipe Length 5 m or shorter Pipe Length 30 m or longer

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¿ Refrigerant charge quantity for ES series

Outdoor units has been charged with refrigerant for ℓ(m) of actual piping length. An additional refrigerant charged is required in systems with actual piping length longer than ℓ(m).

• Determine an additional refrigerant quantity according to the following procedure, and charge it into the system.

• Record the additional refrigerant quantity to facilitate service activities thereafter.

C AU T I O N

– When charging refrigerant accurately measure refrigerant to be charged.

– Overcharging or undercharging of refrigerant can cause compressor trouble.

– In case of actual piping length less than 5 m, consult your distributor.

Outdoor unit Factory Refrigerant charge (Wo Kg) is the next:

O/U MODEL

Wo (Kg) Chargeless Length ℓ(m) Additional Charge Factor (P)

RAS-2HVRN1E 1.6 30 0.03

RAS-2.5HVRN1 1.6 30 0.03

RAS-3HVRNS 1.9 20 0.03

RAS-4HVRNS1E 2.8 20 0.04

RAS-5HVRNS1E 2.9 30 0.06

RAS-6HVRNS1E 2.9 30 0.06

RAS-8HRNSE 6.0 30 0.065

RAS-10HRNSE 6.2 30 0.12

1 Refrigerant shall be added if L is longer than the chargeless length shown in the table above.

Calculate the additional amount as follows:

A. 30 m.

B. 8 m.

C. 8 m.

• Chargeless Length ℓ: for 4HVRNS1E is 30 m according to

the table before.

• Additional Correction Value P : for 4HVRNS1E, “0.04”

according to the table above.

• Additional Charge amount W will be:

W= (L-ℓ) x P

Example: W= (36-20) x 0.04 = 0.64 (kg)

2 Charge the amount W calculated by point 1. 3 Setting of pipe length DSW.

DSW2 setting will be required only when the refrigerant pipe length is shorter than 5 m or longer than 30 m. Pipe length setting shall be performed as shown below.

(The ■ side in the DIP switch show the position.)

DSW2 on outdoor PCB1

Factory setting Factory setting Factory setting

Piping length between 5 m and ℓ(m) Pipe Length 5 m or shorter Pipe Length ℓ(m) or longer

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3.2.8 Pump down refrigerant

When the refrigerant should be collected into the outdoor unit due to indoor/outdoor unit relocation, collect the refrigerant as follows:

1 Attach the manifold gauge to the gas stop valve and the liquid stop valve. 2 Turn ON the power source. 3 Set the DSW1-1 pin of the outdoor unit PCB at the “ON” side for cooling operation. Close the liquid stop valve and collect

the refrigerant.

4 When the pressure at lower pressure side (gas stop valve) indicates -0.01 MPa (-100 mmHg), perform the following

procedures immediately.

• Close the gas stop valve.

• Set the DSW1-1 pin at the “OFF” side (To stop the unit operation).

5 Turn OFF the power source.

C A UT IO N

Measure the low pressure by the pressure gauge and keep it in a measurement higher than -0.01 MPa. If the pressure is lower than -0.01 MPa, the compressor may be faulty.

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3.3 Outdoor Units IVX Series

3.3.1 Piping connection

For a list of factory-supplied accessories, please refer to Accessory code list, see on page 6.

1 The pipes can be connected from any of the following four directions: front, rear, bottom or right side, when facing the

outdoor unit.

1. Rear side piping cover.

2. Rear side piping work (Knock-out hole).

3. Right side piping work (Knock-out hole).

4. Bottom side piping work (Piping cover).

5. Front side piping work (Knock-out hole).

6. Front side piping cover.

A. Push down the cover slowly.

B. Rear cover.

C. Front side piping cover.

D. Rear side piping cover.

Make holes in the piping cover or cabinet for taking the pipes out. Take the piping cover away from the unit, and make holes

123

456ABCD

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by cutting along the guideline at the rear of the cover or punching it with a driver. Remove the burr with a cutter.

N O TE

Hold the cover with a hand at the same time while removing the screws as the cover may fall down.

1. Service cover.

2. Hook (three places): two fan.

2. Hook (two places): one fan.

• For the front and side piping

1. Front piping hole.

2. Side piping hole.

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To use racking or conduit tubes, check the size and remove the stiped parts, following the slit.

N OT E

Place insulation (field supplied) to protect cables and pipes from being damaged by plate edges.

• For the downward piping

1. Liquid piping.

2. Wiring.

3. Gas piping.

4. Knock-out hole.

5. Bottom base.

N OT E

The wiring must not be in contact directly with the pipes.

• For the rear side piping

1. Rear cover.

N OT E

Remove the rear pipe cover under the rear cover and remove the stipped part following the slit.

2 Mount the piping cover in order to avoid water entering into the

unit. Seal the holes where pipes and wires are inserted, by using an insulation (field-supplied).

3 If the field-supplied piping is connected with stop valves

directly, it is recommended to use a tube bender.

4 Check that the stop valves are closed completely before connecting pipes. 5 Connect the field supplied refrigerant pipes to the indoor unit and outdoor unit. Apply the oil thinly at the seat flare nut

and pipe before tightening.

The required tightening torque is as follows:

Pipe Size

Tightening Torque (Nm)

Ø 6.35 mm 20

Ø 9.53 mm 40

Ø 12.70 mm 60

Ø 15.88 mm 80

6 After connecting the refrigerant piping, seal the open space between knockout hole and refrigerant pipes by using the

insulation material.

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A. Insulation material.

B. Field supplied.

7 Operation of stop valve should be performed according to the figure.

Description Remarks

1 Cap —

2 Allen wrench Hex 4/5/10 mm

3 Refrigerant Piping Field supplied

4 Cap —

5 Refrigerant Pressure To outdoor unit

6 Seat Surface Fully closed position

7 Check Joint

Only the charging those can be connected

8 Cap —

9 O-Ring Rubber

10 Spindle valve

Open – Counterclockwise

Close – Clockwise

Tighten torque (Nm)

Valve type / Model A B C D

Liquid valve 3-6HP 7-9 34-42 34-42 14-18

Gas valve 3-6HP 9-11 34-42 68-82 14-18

Liquid valve

8HP 7-9 37 40 16

10-12HP 7-9 37 60 16

Gas valve 8-12HP 9-11 49 53-75 9.8

• Outdoor unit stop valve

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1. Stop valve

2. Flare nut

A. Do not apply two spanners at this position. If applied, leakage will occur

C A UT IO N

– At the test run, fully open the spindle. If not fully

opened, the devices will be damaged.

– Do not attempt to turn service valve rod beyond its

stop.

– Do not loosen the stop ring. If the stop ring is

loosened, it is dangerous since the spindle will hop out.

– Do not apply force to the spindle valve at the end of

opening (5 Nm or smaller). The back seat construction.

• Evacuation and refrigerant charge

– Connect the gauge manifold using charging hoses with a vacuum pump or a nitrogen cylinder to the check joints of

the liquid line and the gas line stop valve.

– Check for any gas leakage at the flare nut connection, by using nitrogen gas to increase the pressure at 4.15 MPa

for outdoor units inside of the field-supplied piping.

– Operate the vacuum pump for 1 to 2 hours until the pressure decreases lower than a pressure of 756 mmHg in

vacuum.

– For charging refrigerant, connect the gauge manifold using charging hoses with a refrigerant charging cylinder to

the check joint of the liquid line stop valve.

– Charge the proper quantity of refrigerant according to the piping length (Calculate the quantity of the refrigerant

charge). – Fully open the gas line stop valve, and slightly open the liquid line stop valve. – Charge refrigerant by opening the gauge manifold valve. – Charge the required refrigerant within the difference range of ±0.5 kg by operating the system in cooling. – Fully open the liquid line stop valve after completing refrigerant charge. – Continue cooling operation for more than 10 minutes to circulate the refrigerant. – See the example below.

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3.3.2 Refrigerant piping length

The refrigerant piping between the indoor unit and the outdoor unit should be designed using the following table.

• Piping length specification:

Unit

Maximum piping length between Outdoor and each

indoor unit (L)

Actual/Equivalent

Maximum Height difference.

Outdoor unit is higher than indoor unit

Indoor unit is higher than Outdoor unit (H)

RAS-3HVRNME 50/70

30/20

RAS-4H(V)RNM1E 70/90

RAS-5H(V)RNM1E

75/95

RAS-6H(V)RNM1E

The possible combination between Outdoor Unit and Indoor Unit are the following:

Single System

Twin System Triple System

— L = A + Longest of B & C L = A+ Longest of B, C & D

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N O TE

• L & H are the length & height indicated in the above chart.

• For twin, the length is the distance between the outdoor unit and the farthest indoor unit.

• Piping length after branch pipe (B,C & D):

1 After branch pipe B,C & D, the pipe length should be shorter than 10 m.

2 All branch pipe, B, C & D (it depend of case), should be balanced.

Twin

Triple

B & C difference B,C & D difference

≤

8 m

≤

6 m

3.3.3 Refrigerant piping selection

Select the piping connection sizes according to the following procedures

• Between outdoor unit and branch pipe: Select the same pipe connection size as the pipe size of the outdoor unit.

• Between branch pipe and indoor unit: Select the same pipe connection size as the pipe size of the indoor unit.

Piping connection size of outdoor unit, indoor unit and distributor

Outdoor Unit

Pipe Size Multikit & Distributor

Liquid Piping Gas Piping Twin Triple Quad

RAS-3HVRNME Ø9.53 Ø15.88 TE-03N / E-102SN2 — —

RAS-4H(V)RNM1E Ø9.53 Ø15.88 TE-56N / E-102SN2 TRE-06N —

RAS-5H(V)RNM1E Ø9.53 Ø15.88 TE-56N / E-102SN2 TRE-06N

TRE-56N+(TE-03N or

TE-56N)

(3)

RAS-6H(V)RNM1E Ø9.53 Ø15.88 TE-56N TRE-06N

TRE-56N+(TE-03N or

TE-56N)

(3)

RAS-8HRNM Ø9.53

(1)

Ø25.40

(2)

TE-08N / E-162SN2 TRE-810N QE-810N

RAS-10HRNM Ø12.70 Ø25.40

(2)

TE-10N / E-162SN2 TRE-810N QE-810N

RAS-12HRNM Ø12.70 Ø25.40

(2)

TE-10N / E-162SN2 TRE-810N QE-810N

N O TE

The sizes of the indoor and outdoor units are different. Adjust the flare adapter (accessories) to the joint part of the indoor piping.

• (1) Select the size of piping ø12.7 when the length is over 70 m (only for RAS-8HRNM).

• (2) If using ø28.60, the actual length is reduced to 75 m.

• If using ø22.20, the actual length is reduced to 100 m., but with a significant reduction in capacity.

The following Multikits can also be used for RAS-(8-12)HRNM.

Outdoor Unit

Multikits

RAS-8HRNM E-162SN-102SN

RAS-10HRNM E-162SN-102SN

RAS-12HRNM E-162SN-102SN

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3.3.4 Twin and triple system installation

Height difference between indoor units and distributor

Install all indoor units at the same height. When the height difference between the indoor units due to building construction is necessary, this should be less than Hin(m). Install the branch pipe at the same height of indoor units or lower, but never higher.

Example: Twin system

1. Indoor unit

2. Indoor unit

3. Branch pipe

A. Height difference between two indoors smaller than Hin (m)

B. Smaller than Hin (m)

Maximum height between

indoor units

Hin (m)

H(V)RNME 3.0

Installing distributor

1 Install the distributor supplied by HITACHI on request. A tee can not be installed instead of a branch pipe.

Example: Twin system

2 Installing the Distributor. Fix the branch pipe horizontally to the pillar, wall or celling. Piping must not be fixed rigidly to

the wall as thermal expansion and contraction can cause pipe fracture.

Example: Twin system

BCA

A. Horizontal.

B. To indoor unit.

C. To outdoor unit.

A. Vertical.

B. To indoor unit

Fix the branch pipe to the surface of pillar or wall.

A. Horizontal.

Fixing the branch pipe to ceiling or beam.

N O TE

Fix the piping from outside of insulation or inserting absorber between the pipe and a fixing metal.

123AB

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3 Correct position of twin distributor

Correct position of twin branch pipe Wrong position of twin branch pipe

ABCDE

AABBCCC

A. Up.

B. Greater than 0.5 m.

C. Main pipe.

D. Refrigerant direction.

E. Refrigerant direction.

F. Branch pipe.

G. Main pipe.

A. Refrigerant direction

B. Main pipe

C. Branch pipe

4 Correct position of triple branch pipe

Install the header horizontally

Example: Triple Branch pipe

1. Gas piping.

2. Liquid piping.

3.3.5 Drain discharging boss

When the base of the outdoor unit is temporarily used as a drain receiver and the drain water in it is discharged, this drain boss is used to connect the drain piping.

Model

Applicable Model

DBS-26 H(V)RNM(1)(E)

Connection procedure

1 Insert the rubber cap into the drain boss up to the extruded portions. 2 Insert the boss into the unit base and turn approximately 40 degree counterclockwise. 3 The outer diameter section of the drain boss is 32 mm. 4 A drain pipe should be field-supplied.

N O TE

• Do not use this drain boss set in a cold area, because the drain water may freeze.

• This drain boss may not be sufficient to collect drain water. If collecting a big amount of drain water should

be necessary, provide a drain-pan bigger than the unit base supplied one, and install it under the unit with

drainage.

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Bottom base view

1. Drain pipe.

2. Extruded portion.

3. Drain boss.

4. Rubber cap.

5. Drain hole of base.

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3.4 Outdoor Units ES Series

3.4.1 Piping connection

For a list of factory-supplied accessories, please refer to Accessory code list, see on page 6.

1 The pipes can be connected from any of the following four directions: front, rear, bottom or right side, when facing the

outdoor unit.

1. Rear side piping cover.

2. Rear side piping work (Knock-out hole).

3. Right side piping work (Knock-out hole).

4. Bottom side piping work (Piping cover).

5. Front side piping work (Knock-out hole).

6. Front side piping cover.

A. Push down the cover slowly.

B. Rear cover.

C. Front side piping cover.

D. Rear side piping cover.

Make holes in the piping cover or cabinet for taking the pipes out. Take the piping cover away from the unit, and make holes

123

456ABCD

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by cutting along the guideline at the rear of the cover or punching it with a driver. Remove the burr with a cutter.

N O TE

Hold the cover with a hand at the same time while removing the screws as the cover may fall down.

1. Service cover.

2. Hook (three places): two fan.

2. Hook (two places): one fan.

1. Rear side piping.

2. Pipe cover.

3. Stop valve.

4. Connecting piping.

5. Liquid.

6. Gas.

A. Direction to remove Pipe Cover.

• For the front and side piping

1. Front piping hole.

2. Side piping hole.

To use racking or conduit tubes, check the size and remove

the stiped parts, following the slit.

N OT E

Place insulation (field supplied) to protect cables and

pipes from being damaged by plate edges.

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• For the downward piping

1. Liquid piping.

2. Wiring.

3. Gas piping.

4. Knock-out hole.

5. Bottom base.

N OT E

The wiring must not be in contact directly with the

pipes.

• For the rear side piping

1. Rear cover.

N OT E

Remove the rear pipe cover under the rear cover and

remove the stipped part following the slit.

2 Mount the piping cover in order to avoid water entering into the

unit. Seal the holes where pipes and wires are inserted, by using an insulation (field-supplied).

3 If the field-supplied piping is connected with stop valves

directly, it is recommended to use a tube bender.

and pipe before tightening.

The required tightening torque is as follows:

Pipe Size

Tightening Torque (Nm)

Ø 6.35 mm 20

Ø 9.53 mm 40

Ø 12.70 mm 60

Ø 15.88 mm 80

6 After connecting the refrigerant piping, seal the open space between knockout hole and refrigerant pipes by using the

insulation material.

A. Insulation material.

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B. Field supplied.

7 Operation of stop valve should be performed according to the figure below.

Closed before shipment Gas valve (RAS-(8/10)HRNSE) only

1 Cap —

2 Allen wrench Hex 5 mm / 4 mm / 10 mm

3 Refrigerant Piping Field supplied

4 Cap —

5 Refrigerant Pressure To outdoor unit

6 Seat Surface Fully closed position

7 Check Joint Only the charging those can be connected

8 Cap —

9 O-Ring Rubber

10 Spindle valve

Open – Counterclockwise

Close – Clockwise

Tighten torque (Nm)

Valve type / Model A B C D

Liquid valve 2-6HP 7-9 34-42 34-42 14-18

Gas valve 2-6HP 9-11 34-42 68-82 14-18

Liquid valve 8/10HP 8 40 40 16

Gas valve 8/10HP 13 45 100 9

• Outdoor unit stop valve

1. Stop valve.

2. Flare nut.

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A. Do not apply two spanners at this position. If applied,

leakage will occur.

C A UT IO N

– At the test run, fully open the spindle. If not fully

opened, the devices will be damaged.

– Do not attempt to turn service valve rod beyond its

stop.

– Do not loosen the stop ring. If the stop ring is

loosened, it is dangerous since the spindle will hop out.

– Do not apply force to the spindle valve at the end of

opening (5 Nm. or smaller). The back seat construction.

• Evacuation and refrigerant charge

– Connect the gauge manifold using charging hoses with a vacuum pump or a nitrogen cylinder to the check joints

of the liquid line and the gas line stop valve.

– Check for any gas leakage at the flare nut connection, by using nitrogen gas to increase the pressure at 4.15 MPa

for outdoor units inside of the field-supplied piping.

– Operate the vacuum pump for 1 to 2 hours until the pressure decreases lower than a pressure of 756 mmHg in

vacuum.

– For charging refrigerant, connect the gauge manifold using charging hoses with a refrigerant charging cylinder

to the check joint of the liquid line stop valve.

– Charge the proper quantity of refrigerant according to the piping length (Calculate the quantity of the refrigerant

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3.4.2 Refrigerant piping length

The refrigerant piping between the indoor unit and the outdoor unit should be designed using the following table.

• Piping length specification:

Unit

Maximum piping length between Outdoor

and each indoor unit (L)

Actual/Equivalent

Maximum Height difference. Outdoor unit is

higher than indoor unit/ Indoor unit is higher

than Outdoor unit (H)

RAS-2HVRN1E

30/20

RAS-2.5HVRN1

RAS-3HVRNS 30

RAS-4HVRNS1E

RAS-5HVRNS1E

RAS-6HVRNS1E

RAS-8HRNSE

50/70

RAS-10HRNSE

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The possible combination between Outdoor Unit and Indoor Unit are the following:

Single System Twin System

L= A + the longest of B & C

Triple System Quad System

L= A + the longest of B, C & D

L= A + (the longest of B + the longest of D & E) & (C + the

longest of F & G)

N O TE

• L & H are the length & height indicated in the above chart.

• For twin, the length is the distance between the outdoor unit and the farthest indoor unit.

• Piping length after branch pipe (B,C & D):

1 After branch pipe B,C & D, the pipe length should be shorter than 10 m.

2 All branch pipe, B, C & D (it depend of case), should be balanced.

Twin

Triple Quad

B & C difference B,C & D difference B-C, B-D, B-E, C-D, C-E, D-E

≤

8 m

≤

6 m

≤

8 m

3.4.3 Refrigerant piping selection

Select the piping connection sizes according to the following procedures

• Between outdoor unit and branch pipe: Select the same pipe connection size as the pipe size of the outdoor unit.

• Between branch pipe and indoor unit: Select the same pipe connection size as the pipe size of the indoor unit.

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Piping connection size of outdoor unit, indoor unit and distributor

Outdoor Unit

Pipe Size Multikit & Distributor

Liquid Piping Gas Piping Twin Triple Quad

RAS-2HVRN1E — — — — —

RAS-2.5HVRN1 — — — — —

RAS-3HVRNS Ø9.53 Ø15.88 TE-03N — —

RAS-4HVRNS1E Ø9.53 Ø15.88 TE-04N — —

RAS-5HVRNS1E Ø9.53 Ø15.88 TE-56N — —

RAS-6HVRNS1E Ø9.53 Ø15.88 TE-56N TRE-06N —

RAS-8HRNSE Ø9.53 Ø25.4 TE-08N TRE-810N

TE-08N + TE-04N +

TE-04N

RAS-10HRNSE Ø9.53 Ø25.4 TE-08N —

TE-08N + TE-56N +

TE-56N

N O TE

The sizes of the indoor and outdoor units are different. Adjust the flare adapter (accessories) to the joint part of the indoor piping.

Piping connection size of indoor units

Indoor Unit

Gas piping size (mm) Liquid piping size (mm)

1.5HP 12.7 6.35

2HP 15.88 6.35

2.5–6HP 15.88 9.53

8HP*

19.05→25.4 (1*)

9.53

10HP*

22.2→ 25.4 (1*)

9.53 (2*)

N O TE

If using different piping from the standard values, piping reducers will be supplied by the installer.

• (*1) Ø19.05

→

Ø25.4 and Ø22.2→ Ø25.4 indoor pipe adapters are factory supplied with the indoor unit.

• (*2) Change the liquid piping size to Ø12.7 when the piping length is more than 30 m. Indoor unit pipe adapter is factory supplied with the indoor unit.

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3.4.4 Twin and triple system installation

Height difference between indoor units and distributor

Install all indoor units at the same height. When a height difference is unavoidable between the indoor units due to the construction of the building, it should always be less than Hin (m). Install the branch pipe at the same height or lower than the indoor units, but never higher.

Example: Twin system

1. Indoor unit

2. Indoor unit

3. Branch pipe

A. Height difference between two indoors smaller than Hin (m)

B. Smaller than Hin (m)

Maximum height between

indoor units

Hin (m)

HVRN(1)S(E) 0.5

Installing distributor

1 Install the distributor supplied by HITACHI on request. A tee can not be installed instead of a branch pipe.

Example: Twin system

2 Installing the distributor. Fix the branch pipe horizontally to the pillar, wall or ceiling. The piping must not be fixed rigidly

to the wall as thermal expansion and contraction can cause pipe fracture.

Example: Twin system

BCA

A. Horizontal.

B. To indoor unit.

C. To outdoor unit.

A. Vertical.

B. To indoor unit.

Fix the branch pipe to the surface of pillar or wall.

A. Horizontal.

Fixing the branch pipe to ceiling or beam.

N O TE

Fix the piping from outside of insulation or inserting absorber between the pipe and a fixing metal.

123AB

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3 Correct position of twin distributor

Correct position of twin branch pipe Wrong position of twin branch pipe

ABCDE

AABBCCC

A. Up.

B. Greater than 0.5 m.

C. Main pipe.

D. Refrigerant direction.

E. Refrigerant Main pipe direction.

F. Branch pipe.

G. Main pipe.

A. Refrigerant direction.

B. Main pipe.

C. Branch pipe.

4 Correct position of triple branch pipe

Install the header horizontally

Example: Triple Branch pipe

1. Gas piping.

2. Liquid piping.

3.4.5 Connecting flare adapter (only for RAS-(2/2.5)HVRN1(E))

1. Liquid line.

2. Flare nut (Accessories).

3. Pipe (Accessories).

4. Indoor unit.

5. Flare adapter (Accessories).

6. Gas line.

7. Pipe (Field supplied).

The piping sizes for indoor unit and outdoor unit are different. Attach the flare adapter (accessories) at the indoor piping union part.

Use the adequate flare adapter as follows:

Indoor unit

Flare adapter

Gas pipe Liquid pipe

2.0 HP

Big size

(Ø15.88→Ø12.70)

—

2.5 HP

Big size

(Ø15.88→Ø12.70)

Small size

(Ø9.53→Ø6.35)

3.4.6 Drain discharging boss

When the base of the outdoor unit is temporarily used as a drain receiver and the drain water in it is discharged, this drain boss is used to connect the drain piping.

Model

Applicable Model

DBS-12L (2-3)HVRNM(1)(S)

DBS-26/DBS-26L (4-6)HVRNS1E/(8/10)HRNSE

12123

456

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Connection procedure

N O TE

• Do not use this drain boss set in a cold area, because the drain water may freeze.

• This drain boss may not be sufficient to collect drain water. If collecting a big amount of drain water should be necessary, provide a drain-pan bigger than the unit base supplied one, and install it under the unit with drainage.

1. Drain pipe

2. Extruded portion

3. Drain boss

4. Rubber cap

5. Drain hole of base

1. Drain hole

2. Plastic cap

3. Drain pipe

A. Push

3 Piping work and refrigerant charge

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4. E l e c t r i c a l W i r i n g

Index

4.1 General check............................................................................................................................ 82

4.2 Electrical wiring for the outdoor unit IVX Series......................................................................... 83

4.2.1 Electrical wiring connection for the outdoor unit............................................................................ 83

4.2.2 Setting the DIP switches for the outdoor unit................................................................................ 84

4.3 Electrical wiring for the outdoor unit ES Series.......................................................................... 88

4.3.1 Electrical wiring connection for the outdoor unit............................................................................ 88

4.3.2 Setting the DIP switches for the outdoor unit................................................................................ 89

4.4 Electrical wiring between indoor unit and outdoor unit............................................................... 93

4.5 Wire sizes................................................................................................................................... 95

4.5.1 Wire sizes for IVX Series.............................................................................................................. 95

4.5.2 Wire sizes for ES Series............................................................................................................... 97

4.5.3 H-LINK System............................................................................................................................. 98

4.6 Electrical wiring diagrams........................................................................................................... 108

4.6.1 Electrical wiring diagrams for IVX Series...................................................................................... 108

4.6.2 Electrical wiring diagrams for ES Series....................................................................................... 112

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4.1 General check

D AN G E R

• Before installing the electrical wiring or before performing a periodical check, turn OFF the main switch to the indoor unit and the outdoor unit. For safety reasons, be sure that the indoor fan and the outdoor fan have stopped.

• Prevent the wires from touching the refrigerant pipes, the plate or cutting edges and the electrical components inside the unit, to prevent them getting damaged. In worst cases, a fire may occur.

• Tightly secure the wires with the cord clamp inside the indoor unit.

N O TE

• In case of performing a test run operation take especially care because some security features are disabled: the units will operate during 2 hours without Thermo-OFF, and the 3-minute guard for compressor protection will not be effective during the test.

• Fix rubber bushes with an adhesive on the panel when the conduit pipes to the outdoor unit are not used.

• In forced stopped compressor mode, the compressor operation is OFF.

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4.2 Electrical wiring for the outdoor unit IVX Series

4.2.1 Electrical wiring connection for the outdoor unit

The correct electrical wiring connection for the outdoor unit is shown below.

1 Insert the power source cables L1, L2, L3 and N (for 400V/50Hz) or L1 and N (for 230V/50Hz ) and the ground cable

into the ring core, coiling them with two turns and fix the cables using the cable tie (accessory). As shown in next figure, do not insert the cables from different sides into the ring core.

1. N/(L2) Wire.

2. L1 Wire.

Connect the three-phase power supply source wires L1, L2, L3 and N (for 400V/50Hz) to the terminal board. Connect the ground wire to the plate in the electrical box.

Model RAS-(4-6)HRNM1E

Model RAS-(8-12)HRNM

11234

1. Signal wire.

2. Earth.

3. Power source wires..

4. Cable tie (accessory).

5. Ring core (accessory) 2 turns.

RAS-(3-6)HVRNM(1)E RAS-(4-6)HRNM1E

121

1. Power supply AC230V.

2. Control cable (5V).

1. Power supply AC400V.

2. Control cable (5V).

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Wiring System [Connection (Connection of Terminals)]

Power Supply

DC inverter

[O.U.-O.U.(L1-L1, L2-L2, L3-L3, N-N)]

[I.U.-I.U.(L1-L1, N-N)]

Operating [O.U.-I.U., I.U.-I.U.(1-1, 2-2)]

Remote Control [I.U.-I.U.(A-A, B-B)]

N O TE

• O.U.: Outdoor Unit

• I.U.: Indoor Unit

3 Connect the wires between the outdoor unit and the indoor unit to the terminals 1 and 2 on the terminal board. 4 Do not run the wires in front of the fixing screw of the service access panel. If you do so, you will not be able to remove

the fixing screw.

1. Power wires.

2. Signal wires.

4.2.2 Setting the DIP switches for the outdoor unit

Quantity and position of DIP switches

The PCB1 (see the electrical wiring diagram - plane a) in the outdoor unit is operated with 6 types of dip switches, one rotary switch and 3 types of push switch.

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Position of DIP switches (DSW) at the PCB1:

RAS-(3-4)H(V)RNM(1)E RAS-(5-12)H(V)RNM(1)(E)

N O TE

• The mark “■” indicates the position of dips switches.

• No mark “■” indicates pin position is not affecting.

• The figures show the settings before shipment or after selection.

D A NG ER

• Before setting dips switches, first turn the power source off and then set the position of the dips switches. In case of setting the switches without turning the power source off, the contents of the setting are invalid.

DSW1: Test Run

Function

Setting position

Setting before shipment

Test run for cooling

Test Run for heating

Forced stop of compressor (1)

- The compressor is OFF during this operation.

C A UT IO N

• The cancellation of the outdoor hot start control configuration could damage the compressor if it is usually used. In that case the unit warranty will be void.

N O TE

• It is possible to select the cancellation of the outdoor hot start control by pushing both PSW1 & PSW3 simultaneously during 3 seconds.

• This operation is reset once the compressor is in Thermo-ON mode.

• During the test run operation the units will operate continuously during 2 hours without Thermo-OFF and the 3-minute guard for compressor protection will be effective.

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DSW2: Piping length/selection function

Function Setting position

Setting before shipment

Piping length

5 m < Lt

Lt > 30 m

5 m < Lt < 30 m

Cancellation of outdoor hot start control. (Not recommended, only available for special testing cases)

Cancellation of outdoor air temperature control.

Optional function selection setting (set by PSW)

External input/output selection signals (set by PSW)

• DSW3: Capacity setting

Unit

Setting position Unit Setting position Unit Setting position

RAS-8HRNM RAS-3HVRNME RAS-4HRNM1E

RAS-10HRNM RAS-4HVRNM1E RAS-5HRNM1E

RAS-12HRNM RAS-5HVRNM1E RAS-6HRNM1E

— — RAS-6HVRNM1E — —

DSW4 / RSW1: Refrigerant cycle setting

In case of using an H-Link II net it is required to set the refrigerant cycle number.

Setting position

(DSW4)

Setting position

(RSW1)

Setting for tens

(second digit)

Setting for units

(first digit)

Example for 16 and

Rotary switche's positions (RSW1) are set by inserting a screw driver into the groove.

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DSW5: Transmission setting of end terminal resistance

• Before shipment, No. 1 pin of DSW5 is set at ON.

• In case of having 2 or more outdoor units connected to the same H-link, set for the second unit the pin number 1 of DSW5 at OFF.

• If only one outdoor unit is used, no setting is required.

Function Setting position

Setting before shipment

Cancellation

DSW6: Power source setting / individual operation

Function

Setting position

380-415V

(Setting before shipment)

220-240V

(setting before shipment)

In case of multiple operation, must activated to OFF position pin No. 1

DSW1 (PCB2): Cancellation of electrical current detection. Only for RAS-(8-12)HRNM

Function

Setting position

Setting before shipment

Cancellation of electrical current detection

Jumper lead setting (JP1~6)

Setting before shipment:

JP1

JP2 JP3 JP4 JP5 JP6

1 0 0 1 1 1

N O TE

• 0: Open

• 1: Short circuit

The function selection using the jumper lead setting is shown in the table below.

Setting

Function Details

JP1 (Only for RAS-(8-12)HRNM)

Cooling -15 ºC & Heating.

When JP1 is set to “open”, temperature range for cooling mode is fixed until -15 ºC. Not available for individual indoor control.

JP2 Not used —

JP3 Not used —

JP4 Fixing for Cooling Only

When JP4 is set to “open”, operation mode is fixed for cooling. Thermo-ON is available only by “COOL” or “DRY” mode at indoor unit.

JP5 Alternative Defrosting Mode

When JP5 is set to “open”, alternative defrosting mode is available. When one of the outdoor units connected by H-LINK II is under defrosting, the other outdoor units defrosting is cancelled. After one outdoor unit defrosting is completed, another outdoor unit starts defrosting operation.

JP6 R407C pipes

When JP6 is set to “open”, existing piping system control is available. High pressure control is performed depending on existing piping strength.

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4.3 Electrical wiring for the outdoor unit ES Series

4.3.1 Electrical wiring connection for the outdoor unit

The correct electrical wiring connection for the outdoor unit is shown below.

1 Insert the power source cables L1 and N (for 230V/50Hz ) and the ground cable into the ring core, coiling them with two

turns and fix the cables using the cable tie (accessory). As shown in next figure, do not insert the cables from different sides into the ring core.

1. N/(L2) Wire.

2. L1 Wire.

Connect the power supply source wires L1 and N (for 230V/50Hz) and L1, L2, L3 and N (for 400V/50Hz) to the terminal board. Connect the ground wire to the plate in the electrical box.

RAS-(2-3)HVRN(1)(E)(S)

RAS-(4-6)HVRNS1E Model RAS-(8/10)HRNSE

12345

123

1. Power wires.

2. PCB.

3. Earth terminal.

4. Side cover.

5. Transmission wires.

1. Transmission wires.

2. Transformer.

3. Fuse.

4. Power wires.

1. Transformer.

2. Transmission wires.

3. Power wires.

RAS-(3-6)HVRN(1)(S)

RAS-(4-6)HVRNS1E

RAS-(8/10)HRNSE

121

1. Power supply AC230V.

2. Control cable (5 V).

1. Power supply AC400V.

2. Control cable (5V).

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Wiring System

[Connection (Connection of Terminals)] for

RAS-(2-6)HVRN(1)(S)(E)

[Connection (Connection of Terminals)] for

RAS-(8/10)HRNSE

Power Supply

DC inverter

[O.U.-O.U.(L1-L1, N-N)] [O.U.-O.U.(L1-L1, L2-L2, L3-L3, N-N)]

Operating [O.U.-I.U., I.U.-I.U.(1-1, 2-2)] [O.U.-I.U., I.U.-I.U.(1-1, 2-2)]

Remote Control [I.U.-I.U.(A-A, B-B)] [I.U.-I.U.(A-A, B-B)]

N O TE

• O.U: Outdoor Unit

• I.U: Indoor Unit

the fixing screw.

1: Power wires

2: Signal wires

4.3.2 Setting the DIP switches for the outdoor unit

Quantity and position of DIP switches

The PCB1 (see the electrical wiring diagram - plane a) in the outdoor unit is operated with 6 types of dip switches, one rotary switch and 3 types of push switch.

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Position of DIP switches (DSW) at the PCB1:

RAS-(4-6)HVRNS1E RAS-(8/10)HRNSE

N O TE

• The mark “■” indicates the position of dips switches.

• No mark “■” indicates pin position is not affecting.

• The figures show the settings before shipment or after selection.

A T TE NT IO N

DSW1: Test Run

Function

Setting position

Setting before shipment

Test run for cooling

Test Run for heating

Forced stop of compressor (1)

- The compressor is OFF during this operation.

C A UT IO N

• The cancellation of the outdoor hot start control configuration could damage the compressor if it is usually used. In that case the unit warranty will be void.

N O TE

• It is possible to select the cancellation of the outdoor hot start control by pushing both PSW1 & PSW3 simultaneously during 3 seconds.

• This operation is reset once the compressor is in Thermo-ON mode.

• During the test run operation the units will operate continuously during 2 hours without Thermo-OFF and the 3-minute guard for compressor protection will be effective.

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DSW2: Piping length/selection function

Function Setting position

Setting before shipment

Piping length

5 m < Lt

Lt > 30 m

5 m < Lt < 30 m

Cancellation of outdoor hot start control.

(Not recommended, only available for special testing cases )

RAS-(2/6)HVRN(1)(S)(E)

Cancellation of outdoor air temperature control.

Optional function selection setting (set by PSW)

ON: set

OFF: no set

External input/output selection signals (set by PSW)

ON: set

OFF: no set

DSW3: Capacity setting

Unit

Setting position Unit Setting position Unit Setting position

RAS-2HVRN1E RAS-4HVRNS1E RAS-8HRNSE

RAS-2.5HVRN1 RAS-5HVRNS1E RAS-10HRNSE

RAS-3HVRNS RAS-6HVRNS1E — —

DSW4 / RSW1: Refrigerant cycle setting

In case of using an H-Link II net it is required to set the refrigerant cycle number.

Setting position

(DSW4)

Setting position

(RSW1)

Setting for tens

(second digit)

Setting for units

(first digit)

Example for 16 and

Rotary switches positions (RSW1) are set by inserting a screw driver into the groove.

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DSW5: Transmission setting of end terminal resistance

• Before shipment, No. 1 pin of DSW5 is set at ON.

• In case of having 2 or more outdoor units connected to the same H-link, set for the second unit the pin number 1 of DSW5 at OFF.

• If only one outdoor unit is used, no setting is required.

Function Setting position

Setting before shipment

Cancellation

DSW6: Power source setting

Function

Setting position

RAS-(2-6)HVRN(1)(S)(E) RAS-(8-10)HRNSE

230V

(setting before shipment)

—

400V

(setting before shipment)

Jumper lead setting (JP1~6)

Setting before shipment:

JP1

JP2 JP3 JP4 JP5 JP6

1 0 0 1 1 1

N O TE

• 0: Open

• 1: Short circuit

The function selection using the jumper lead setting is shown in the table below.

Setting

Function Details

JP1 Not used —

JP2 Not used —

JP3 Not used —

JP4 Fixing for Cooling Only

When JP4 is set to “open”, operation mode is fixed for cooling. Thermo-ON is available

only by “COOL” or “DRY” mode at indoor unit.

JP5 Not used —

JP5 R407C pipes

When JP6 is set to “open”, existing piping system control is available. High pressure

control is performed depending on existing piping strength.

4 Electrical Wiring

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