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Hitachi RAS-6-HVNCE User Manual

Hitachi RAS-6-HVNCE
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-6-HVNCE Specifications

General IconGeneral
BrandHitachi
ModelRAS-6-HVNCE
CategoryAir Conditioner
LanguageEnglish

Summary

Hitachi UTOPIA IVX Premium / IVX Standard Series Service Manual

UTOPIA IVX Premium / IVX Standard Series

Covers UTOPIA IVX Premium and IVX Standard series for split and multisplit systems.

General Information

General Notes

Covers reproduction rights, product improvement policy, and documentation accuracy.

Introduction to Hitachi UTOPIA Series

Details the UTOPIA series, IVX Premium and Standard, and their environmental benefits.

Safety Precautions

Highlights safety symbols (Danger, Caution, Note) and regulatory compliance for refrigerants.

Product Guide: Outdoor Unit Classification

Explains the model classification system for IVX series outdoor units.

Product Guide: Indoor Unit Classification

Details the classification system for RCI, RCIM, RCD, RPC, RPI, RPIM, RPK, RPF, RPFI indoor units.

Product Guide: Outdoor Units

Lists IVX Premium and IVX Standard outdoor units with their codes for different voltage/frequency.

Outdoor Unit Accessory Code List

Lists accessories like drain discharge connections, air flow guides, and snow protection hoods.

Product Guide: Indoor Units & Complementary Systems

Details RCI and RCIM indoor units, including their models, codes, and optional panels.

Product Guide: RCD and RPC Indoor Units

Details RCD and RPC indoor units, including their models, codes, and optional panels.

Product Guide: RPI and RPIM Indoor Units

Details RPI and RPIM indoor units, including their models and codes.

Product Guide: RPK, RPF and RPFI Indoor Units

Details RPK, RPF, and RPFI indoor units, including models, codes, and optional systems.

Product Guide: Complementary Systems (KPI)

Lists KPI energy/heat recovery units with their models, codes, and functions.

Product Guide: DX-Interface

Details the DX-Interface control box and expansion valve models and codes.

Unit Installation

Safety Summary for Unit Installation

Provides critical safety guidelines for installing both indoor and outdoor units, including electrical and physical hazards.

Transportation of Outdoor Unit

Details safe methods for transporting outdoor units, including hanging and handling precautions.

Center of Gravity for Hanging

Illustrates the center of gravity and dimensions for various outdoor unit models for safe hanging.

Factory-Supplied Accessories for RAS-12HN(P/C)

Lists the factory-supplied accessory, Pipe with Flare Nut for Refrigerant Piping, and its quantity.

Installation Space Requirements

Specifies basic installation space dimensions for different unit models to ensure proper airflow and maintenance.

Installation Space for RAS-(2-2.5)HVNP / RAS-3HVNC

Provides detailed installation space diagrams for single and serial unit configurations.

Installation Space for RAS-3HVNPE / RAS-(4-6)H(V)N(P/C)E / RAS-(8-10)HN(P/C)E / RAS-12HN(P/C)

Details installation space requirements for various models in blocked/open inlet/outlet side scenarios.

Installation Space for Outlet Side Blocked

Specifies installation space requirements when the outlet side is blocked for single and multiple units.

Installation Space for Stack and Multiple Rows

Provides guidelines for stack installation (up to 2 units) and multiple rows (rooftop) installations.

Place Provision for RAS-(2-2.5)HVNP / RAS-3HVNC

Details securing the outdoor unit with anchor bolts, drainage, and foundation requirements.

Installing Location Considerations for Strong Wind

Provides instructions for installing units in locations exposed to strong winds to prevent operational issues.

Place Provision for RAS-3HVNPE / RAS-(4-6)H(V)N(P/C)E / RAS-(8-10)HN(P/C)E / RAS-12HN(P/C)

Details concrete foundation, metal plate requirements, and anchor bolt locations for specific models.

Fixing Unit to the Wall

Explains how to fix the unit to a wall using field-supplied brackets and securing the foundation.

Suspended Unit Installation

Describes how to suspend units, ensuring wall strength and secure foot support for stability.

Installing Location Exposed to Strong Wind

Provides guidance on selecting locations to avoid strong winds impacting the unit's air intake or outlet.

Optional Parts and Installation for RAS-(2-2.5)HVNP / RAS-3HVNC

Details installation of air flow guides, wind guards, and snow protection hoods for specific models.

Air Flow Guide Specifications

Provides specifications and attachment examples for the AG-264 air flow guide.

Wind Guard Specifications

Details specifications and installation examples for the WSP-264 wind guard.

Optional Parts and Installation for RAS-3HVNPE / RAS-(4-6)H(V)NCE

Details installation of air flow guides, wind guards, and snow protection hoods for specific models.

Optional Parts and Installation for RAS-(4-6)H(V)NPE / RAS-(8-10)HN(P/C)E

Details installation of air flow guides, wind guards, and snow protection hoods for specific models.

Optional Parts and Installation for RAS-12HN(P/C)

Details installation of air flow guides, wind guards, and snow protection hoods for specific models.

Servicing for Standard Series

Covers servicing procedures for standard series outdoor units, including component removal.

Outdoor Units RAS-(4-6)H(V)NCE Servicing

Details servicing procedures for outdoor units RAS-(4-6)H(V)NCE, covering component removal.

Outdoor Units RAS-(8-10)HNCE Servicing

Details servicing procedures for outdoor units RAS-(8-10)HNCE, covering component removal.

Outdoor Units RAS-12HNC Servicing

Details servicing procedures for outdoor units RAS-12HNC, covering component removal.

Piping Work and Refrigerant Charge

General Notes Before Performing Pipe Work

Provides general guidelines and material recommendations for refrigerant piping.

Piping Connection for Outdoor Unit

Details piping connection procedures for various outdoor unit models.

Refrigerant Piping Range

Specifies the permissible refrigerant piping lengths and height differences for different systems.

Piping System for Header Branch

Illustrates piping systems for header branch connections for 1, 2, 3, and 4 indoor unit systems.

Maximum Refrigerant Piping Length (Line Branch System)

Provides maximum piping lengths for IVX Premium and Standard series in line branch systems.

Combinations of Piping Size and Piping Length

Details permissible combinations of piping sizes and lengths for IVX Premium and Standard series.

Refrigerant Piping Size and Multikit/Distributor Selection

Specifies pipe sizes and multikit selections for 1 and 2 indoor unit systems.

Piping System for Line Branch

Illustrates piping systems for line branch connections for different IU quantities and series.

Refrigerant Charge

Covers procedures and precautions for charging refrigerant, including pressure checks.

Caution in Case of Refrigerant Leakage

Details maximum permissible HFC concentration and countermeasures for refrigerant leakage.

Piping Work for Compatibility with Existing Installations

Provides procedures for using existing pipes with R22 or R407C, including renewal kit usage.

Drain Piping

Details the connection of drain pipes using drain bosses.

Electrical Wiring

General Notes on Electrical Wiring

Provides general safety precautions and checks for electrical wiring and components.

Electrical Wiring Connection for the Outdoor Unit

Illustrates correct electrical wiring connections for outdoor units of various models.

Setting DIP Switches for Outdoor Unit

Explains the quantity, position, and function of DIP switches for various outdoor units.

Common Wiring: Outdoor and Indoor Unit

Details electrical wiring between outdoor and indoor units, including wire size and breaker selection.

H-LINK II System

Describes the H-LINK II system features, specifications, and connection examples.

System Control

Explains individual and simultaneous operation modes for the HVAC system.

Electrical Wiring Diagrams

Provides detailed electrical wiring diagrams for various outdoor unit models and voltage types.

Control System

Device Control System Overview

Details the control logic for compressor frequency, expansion valves, and fan motors.

Outdoor Unit PCB Identification

Identifies connectors, switches, and LEDs on the PCB for various outdoor unit models.

Protection and Safety Control

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

Standard Operation Sequence

Provides flowcharts for cooling, dry, heating, automatic, and defrost operation sequences.

Standard Control Functions

Details functions like freezing protection, high-pressure prevention, and discharge gas temperature control.

Optional Functions

Optional Input and Output Signals (7-Segment Display)

Describes available ports, signals, and their connection diagrams for optional functions.

Optional Functions (7-Segment Display) - Settings

Details how to set optional functions using switches PSW1, PSW2, and PSW3 via the 7-segment display.

Optional Functions (7-Segment Display) - Descriptions

Provides descriptions for optional functions like fan control, night mode, and defrost conditions.

Optional Functions (By Remote Control Switch)

Lists available optional functions for the PC-ART remote control switch.

Test Run Procedures

Checking Procedure Before Test Run

Outlines pre-test run checks, including power supply, wiring, refrigerant, and component connections.

Test Run Procedure Using PC-ART Remote Control

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

Test Run Procedure Using PC-ARF Remote Control

Detailed steps for conducting test runs using the PC-ARF remote control switch.

Test Run Procedure Using Wireless Remote Control (PC-LH3A/B)

Instructions for performing test runs using the wireless remote control switch.

Test Run Procedure from Outdoor Unit Side

Details how to perform test runs directly from the outdoor unit's DIP switches.

Check List for Test Run

Provides a checklist for verifying operational parameters during test runs.

Check List on Compressor

A checklist for diagnosing compressor-related issues and confirming proper installation.

Troubleshooting

Initial Troubleshooting Steps

Covers basic troubleshooting using the 7-segment display, power supply checks, and transmission issues.

Troubleshooting Procedure by Alarm Codes

Lists alarm codes for outdoor/indoor units and provides troubleshooting steps for each.

Troubleshooting in Check Mode

Details how to use remote controllers (PC-ART, PC-ARF) and the 7-segment display for troubleshooting.

Checking Procedures for Main Parts

Provides procedures for checking key components like DIP-IPM inverter, capacitors, fan motors, and valves.

Spare Parts Identification

RAS-(2-2.5)HVNP Spare Parts

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

RAS-3HVNC Spare Parts

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

RAS-3HVNPE Spare Parts

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

RAS-(4-6)H(V)NPE Spare Parts

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

RAS-(4-6)H(V)NCE Spare Parts

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

RAS-(8-10)HN(P/C)E Spare Parts

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

RAS-12HN(P/C) Spare Parts

Lists cycle, structural, electrical parts, and parts names for RAS-12HN(P/C) models.

Servicing Procedures

Introduction to Servicing

General introduction to servicing operations, including safety precautions and compressor handling.

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

Detailed steps for removing components like pipe covers, front covers, fans, and compressors.

Servicing Outdoor Unit RAS-3HVNPE

Step-by-step guide for removing service cover, outlet grille, upper cover, and compressor for RAS-3HVNPE.

Servicing Outdoor Units RAS-(4-6)H(V)NPE

Details component removal procedures for outdoor units RAS-(4-6)H(V)NPE.

Servicing Outdoor Units RAS-(8-10)HNPE

Details component removal procedures for outdoor units RAS-(8-10)HNPE.

Servicing Outdoor Units RAS-12HNP

Details component removal procedures for outdoor units RAS-12HNP.

Servicing for Standard Series

Covers servicing procedures for standard series outdoor units.

Outdoor Units RAS-(4-6)H(V)NCE Servicing

Details component removal procedures for outdoor units RAS-(4-6)H(V)NCE.

Outdoor Units RAS-(8-10)HNCE Servicing

Details component removal procedures for outdoor units RAS-(8-10)HNCE.

Outdoor Units RAS-12HNC Servicing

Details component removal procedures for outdoor units RAS-12HNC.

Electrical Checks of Main Parts

Inverter Specifications and Checks

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

Thermistor Checks

Covers thermistors for outdoor units and compressor, including resistance characteristics.

Electronic Expansion Valve Checks

Details the checking procedure for electronic expansion valves for indoor and outdoor units.

High Pressure Protection Device Checks

Explains the high pressure protection device and its activation conditions for various models.

Noise Filter (NF) Checks

Details noise filter specifications and circuit diagrams for 3-phase and 1-phase systems.

Capacitor (CB1 CB2) Checks

Explains the function and checking procedure for capacitors used in the inverter.

Reactor (DCL) Specifications

Provides specifications for reactors used in 3-phase and 1-phase inverter circuits.

Scroll Compressor Principles

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

Maintenance Notes

General Notes on Maintenance

Covers general notes on power source, wiring, compressor issues, and installation space.

Maintenance Work Procedures

Details maintenance tasks for indoor and outdoor units, including fan motors, heat exchangers, and compressors.

Service and Maintenance Record (7-Segment Display)

Provides a template for recording service and maintenance data using the 7-segment display.

Service and Maintenance Record (Remote Control Switch)

Provides a template for recording service and maintenance data using the remote control switch.

Pump-Down Method for Compressor Replacement

Details the pump-down method for safely replacing the compressor.

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