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Hitachi RAS-12-HNCE User Manual

Hitachi RAS-12-HNCE
480 pages
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Printed in SpainSMGB0079 rev.0 - 01/2013
Hitachi air conditioning products are manufactured according to:
ISO 9001 of JQA, Japan for its Quality Management accordance with the
standard
ISO 14001 of JACO, Japan for its Environmental Management accordance with
the standard
Hitachi Air Conditioning Products Europe, S.A. is certified with:
ISO 9001 of AENOR, Spain for its Quality Management accordance with the
standard
ISO 14001 of AENOR Spain for its Environmental Management systems
accordance with the standard
Hitachi certifies that our products have met EU consumer safety, health and
environmental requirements.
Hitachi Air Conditioning Products Europe, S.A.
Ronda Shimizu, 1 - Polig. Ind. Can Torrella
08233 Vacarisses (Barcelona) Spain
HITACHI participates in the Eurovent Certification Programme; the certified
data of certified models are listed in the Eurovent Certification Online Directory
(www.eurovent-certification.com).
SMGB0079 rev. 0 - 01/2013
Service Manual
UTOPIA IVX PREMIUM / IVX STANDARD SERIES
H(V)N(P/C)(E)
UTOPIA IVX PREMIUM / IVX STANDARD SERIES
RAS-(2-6)HVNP(E)
RAS-(4-12)HNP(E)
RAS-(3-6)HVNC(E)
RAS-(4-12)HNC(E)

Table of Contents

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Hitachi RAS-12-HNCE Specifications

General IconGeneral
Cooling Capacity3.5 kW
Heating Capacity4.0 kW
Power Consumption (Cooling)1090 W
RefrigerantR410A
Power Supply220-240V, 50Hz
Indoor Unit Weight9 kg
TypeSplit
Dimensions (Outdoor Unit)780 x 540 x 260 mm
Outdoor Unit Dimensions (W x H x D)780 x 540 x 260 mm
Energy Efficiency Ratio (EER)3.21

Summary

1. General information

1.1 General information

Covers general notes, introduction, and environmental aspects of the UTOPIA series.

1.2 Safety

Details applied symbols, DANGER/CAUTION/NOTE messages, and norms/regulations.

1.3 Product guide

Classifies outdoor and indoor unit models and lists accessories.

2. Unit Installation

2.1 Safety summary

Outlines DANGER/CAUTION points for unit installation to prevent hazards.

2.2 Transportation of outdoor unit

Provides hanging methods, caution notes, and gross weight details for safe transport.

2.3 Center of gravity

Specifies hanging methods and center of gravity for various models.

2.5 Installation space (Initial ckeck)

Details basic dimensions and clearance requirements for unit installation.

2.6 Place provision

Covers concrete foundation, metal plates, and wall fixing requirements for outdoor units.

2.7 Optional parts and installation

Describes installation of optional accessories like air flow guides and snow protection hoods.

3. Piping work and refrigerant charge

3.1 General notes before performing pipe work

Covers piping materials, principles, suspension, and brazing work for refrigerant piping.

3.2 Piping connection for outdoor unit

Details connecting refrigerant pipes to outdoor units for various models.

3.3 Refrigerant piping range

Outlines piping length, header/line branch systems, and combinations for different units.

3.4 Refrigerant charge

Explains procedures for charging refrigerant, including cautions and quantities.

3.5 Caution in case of refrigerant leakage

Addresses HFC concentration, calculation, and countermeasures for refrigerant leakage.

3.6 Piping work for compatibility with the piping of current installations where is used R22 or R407C.

Details procedures for using existing pipes, renewal kits, and compatibility with older refrigerants.

4. Electrical wiring

4.1 General notes

Provides general safety notes and checks for electrical wiring work, including EMC compliance.

4.2 Electrical wiring connection for the outdoor unit

Illustrates correct power source and transmission wiring connections for various outdoor units.

4.3 Setting the DIP switches for the outdoor unit

Explains DIP switch settings for test run, pipe length, capacity, and refrigerant cycle number.

4.4 Common wiring

Discusses wiring between indoor and outdoor units, wire sizes, and main switch protection.

4.5 H-LINK II system

Details features, specifications, DIP switch settings, and connection examples for the H-LINK II system.

4.7 Electrical wiring diagrams

Provides detailed wiring diagrams for different model series and power supplies.

5. Control System

5.1 Device control system

Explains control subjects, purpose, and operation modes for compressor, valves, and fans.

5.2 Outdoor units PCB

Details connector indications, switch indications, and LED indications for various outdoor unit PCBs.

5.3 Protection and safety control

Covers compressor protection devices and safety/control device settings for outdoor units.

5.4 Standard operation sequence

Illustrates operational sequences for cooling, dry, heating, automatic, and defrost operations.

5.5 Standard control functions

Explains freezing protection, high pressure prevention, discharge gas temperature control, and preheating.

6. Optional functions

6.1 Optional input and output signals (By 7-segment display)

Details available ports, optional signals, and connection examples for input/output signals.

6.2 Optional functions (By 7-segment display)

Explains setting and description of optional functions configurable via the 7-segment display.

6.3 Optional functions (By remote control switch)

Lists optional functions configurable via the remote control switch, with individual settings.

7. Test run

7.1 Checking procedure before the test run

Outlines essential checks before starting the test run, including safety and wiring.

7.2 Test run procedure using the remote control switch (PC-ART)

Step-by-step guide for performing test run using the PC-ART remote control.

7.3 Test run procedure using the remote control switch (PC-ARF)

Step-by-step guide for performing test run using the PC-ARF remote control.

7.4 Test run procedure using the wireless remote control switch (PC-LH3A/B)

Procedure for test run using a wireless remote control switch.

7.5 Test run procedure from the outdoor unit side

Details how to perform a test run directly from the outdoor unit.

7.6 Check list

Provides checklists for test run and compressor checks for verification.

8. Troubleshooting

8.1 Initial troubleshooting

Covers basic checks using the 7-segment display, power supply failures, and transmission abnormalities.

8.2 Troubleshooting procedure

Explains how to interpret alarm displays and use alarm codes for diagnosis.

8.3 Troubleshooting in check mode

Guides on using remote controllers (PC-ART, PC-ARF) and 7-segment display for troubleshooting.

8.4 Checking procedure for main parts

Details checks for key components like DIP-IPM inverter, capacitors, fan motors, and expansion valves.

9. Spare parts

9.1 RAS-(2-2.5)HVNP

Lists cycle, structural, electrical parts, and parts names for RAS-(2-2.5)HVNP models.

9.2 RAS-3HVNC

Lists cycle, structural parts, and parts table for RAS-3HVNC models.

9.3 RAS-3HVNPE

Lists cycle, structural, electrical parts, and parts names for RAS-3HVNPE models.

9.4 RAS-(4-6)H(V)NPE

Lists cycle, structural, electrical parts, and parts names for RAS-(4-6)H(V)NPE models.

9.5 RAS-(4-6)H(V)NCE

Lists cycle, structural, electrical parts, and parts names for RAS-(4-6)H(V)NCE models.

9.6 RAS-(8-10)HN(P/C)E

Lists cycle, structural, electrical parts, and parts names for RAS-(8-10)HN(P/C)E models.

9.7 RAS-12HN(P/C)

Lists cycle, structural, electrical parts, and parts names for RAS-13HN(P/C) models.

10. Servicing

10.1 Introduction

Provides a general introduction to servicing procedures and safety precautions.

10.2 Servicing for Outdoor Units RAS-(2-2.5)HVNP and RAS-3HVNC

Details servicing steps for removing components like pipe cover, front cover, fan, and compressor.

10.3 Servicing for Premium series

Covers servicing procedures for specific Premium series outdoor units (RAS-3HVNPE, etc.).

10.4 Servicing for Standard Series

Covers servicing procedures for specific Standard series outdoor units (RAS-(4-6)H(V)NCE, etc.).

11. Electrial checks of main parts

11.1 Inverter

Details inverter specifications, time chart, protective functions, and overload control.

11.2 Thermistor

Explains thermistors for outdoor units and their characteristics, especially for compressor protection.

11.3 Electronic expansion valve

Describes the electronic expansion valve, its components, and checking procedures.

11.4 High pressure protection device

Details high pressure switches and pressure sensors for protection control.

11.5 Noise filter (NF)

Provides specifications and circuit diagrams for noise filters used with inverters.

11.6 Capacitor (CB1 CB2)

Specifies the use and electrical characteristics of capacitors CB1 and CB2.

11.7 Reactor (DCL)

Lists specifications and purpose of reactors (DCL) for 3-phase and 1-phase power.

11.8 Scroll compressor

Explains the reliable mechanism for low vibration and sound, and the principle of compression.

12. Maintenance notes

12.1 General notes

Covers checks for power source, wiring, compressor burnout, insufficient cooling, and abnormal sounds.

12.2 Maintenance work

Outlines maintenance tasks for indoor and outdoor units, including fan motors, heat exchangers, and electrical equipment.

12.3 Service and maintenance record

Provides a template for recording service and maintenance activities.

12.4 Service and maintenance record using the 7-segment display

Details how to record service data using the 7-segment display.

12.5 Service and maintenance record by remote control switch

Provides a data sheet for recording service and maintenance by remote control.

12.6 Pump-down method for replacing the compressor

Describes the procedure for pump-down when replacing the compressor.

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