To Next PageTo Next Page
Need help?Do you have a question about the Hitachi RAS-(4-12)HRNM(2)(E) and is the answer not in the manual?
General| Refrigerant | R410A |
|---|---|
| Type | Split System |
| Cooling Capacity | 4-12 kW |
| Heating Capacity | 4-12 kW |
| Operating Temperature (Heating) | -15°C to 24°C |
| Power Supply | 220-240V, 50Hz |
Provides copyright, revision, and disclaimer information for the publication.
Details the UTOPIA series outdoor units, including IVX, 2/2.5HP, and ES series, highlighting inverter technology and heat pump capabilities.
Explains the use of R410A refrigerant and adherence to RoHS and Green Dot regulations.
Defines danger, caution, and note symbols used in the manual for safety and instruction.
Lists and illustrates outdoor units for IVX and ES series, including model codes.
Details optional accessories for UTOPIA outdoor units, including codes and figures.
Provides critical safety precautions for installation, including danger and caution warnings.
Details the hanging method for safe transportation and installation of outdoor units.
Illustrates the center of gravity for various outdoor unit models and their hanging methods.
Specifies required installation clearances for different configurations and models.
Explains concrete foundation requirements and anchor bolt locations for unit placement.
Describes the installation of optional accessories like air flow guides, wind guards, and snow protection hoods.
Provides general guidelines for drain piping installation and checking the drain-up mechanism.
Details piping materials, principles, suspension, brazing, and connection methods.
Outlines the three key principles: Dry, Clean, and No Leakage, with causes of failure and preventive actions.
Provides guidance on calculating and charging additional refrigerant based on piping length for IVX and ES series.
Explains the procedure for collecting refrigerant into the outdoor unit for relocation or servicing.
Details piping connections, lengths, selections, twin/triple system installations, and drain bosses for IVX series.
Covers piping connections, lengths, selections, twin/triple systems, and drain bosses for ES series.
Outlines essential checks before installing electrical wiring or performing periodic checks.
Details electrical wiring connections and DIP switch settings for IVX series outdoor units.
Provides electrical wiring connections and DIP switch settings for ES series outdoor units.
Explains how to connect electrical wires between indoor and outdoor units, emphasizing correct terminal matching.
Specifies minimum wire sizes for power sources and transmitting cables for IVX and ES series.
Provides detailed wiring diagrams for IVX and ES series outdoor units.
Details control subjects and their purposes for cooling, heating, and defrost operations in IVX Series.
Illustrates and explains the connector and LED indications for outdoor unit PCBs in IVX and ES Series.
Describes compressor protection devices and safety control device settings for IVX and ES Series.
Presents detailed flowcharts for cooling, dry, and heating operations for IVX and ES Series units.
Explains standard control functions like freezing protection, discharge gas temperature control, and expansion valve control.
Details available ports for input and output signals on outdoor unit PCBs for IVX and ES series.
Lists and describes the system's input and output ports, including connection diagrams.
Describes optional input signals like fixing operation mode, demand thermo OFF, and forced stoppage.
Details optional output signals such as operation signal, alarm signal, compressor ON signal, and defrost operation signal.
Explains how to program optional signals using the outdoor unit's PCB and push switches.
Lists essential checks required before performing the test run, including safety and connections.
Provides step-by-step instructions for performing a test run using the wired remote control.
Details the procedure for performing a test run using the wireless remote control switch.
Explains how to perform a test run by setting DIP switches on the outdoor unit's PCB.
A checklist for verifying correct operation and installation of IVX series units during test runs.
A checklist for verifying correct operation and installation of ES series units during test runs.
Provides initial troubleshooting steps based on 7-segment display indications and power supply issues.
Details troubleshooting procedures by alarm code, check mode, and flashing LEDs for IVX and ES series.
Explains self-checking procedures for PCBs and remote control switches for RPK models.
Lists and illustrates cycle and structural parts for IVX series models.
Lists and illustrates cycle, structural, and electrical parts for ES series models.
Provides safety precautions and general notes before performing any service operations.
Details the servicing procedures for outdoor units in the IVX series, including removing components.
Provides servicing procedures for outdoor units in the ES series, including component removal.
Details inverter specifications and protection functions for IVX and ES series.
Explains thermistors for outdoor units, including compressor upper part and ambient temperature thermistors.
Describes the control mechanism and specifications of the electronic expansion valve.
Explains the function of the high pressure protection device and its circuit.
Details noise filters for 3-phase and 1-phase power supplies, including circuit diagrams.
Describes the function and specifications of capacitors used for DC current conversion in the inverter.
Provides specifications for reactors used in 3-phase and 1-phase inverter circuits.
Explains the reliable mechanism for low vibration and low sound, and the principle of compression.
Provides a checklist for verifying power source and wiring connections in case of abnormal operation.
Discusses a field case of compressor failure due to insufficient refrigerant charge and provides countermeasures.
Analyzes a case of insufficient cooling due to long piping and the effect of DIP switch settings.
Addresses high operation sound in indoor units, attributing it to installation without ducts and high air volume.
Explains a scenario where alarm code '31' occurred due to incorrect indoor unit capacity settings.
Discusses cooling issues caused by insufficient installation space and air circulation problems.
Provides information on maximum permissible HCFC gas concentration and countermeasures for leakage.
Details maintenance procedures for fan motors, heat exchangers, piping, electrical equipment, and control devices.
Provides a checklist for recording service and maintenance activities for indoor and outdoor units.
Explains how to use the 7-segment display and remote control switch for checking unit information and errors.
Details how to use the remote control switch for checking various operating parameters and functions.
Provides a step-by-step procedure for collecting refrigerant using the pump-down method before compressor replacement.
