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Hitachi RAS-5HVRNM2 User Manual

Hitachi RAS-5HVRNM2
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TC-12001
2-73
OUTDOOR UNIT
Installation
&
Maintenance
Manual
INVERTER-DRIVEN
SPLIT SYSTEM
HEAT PUMP
AIR CONDITIONERS
- DC INVERTER UTOPIA -
Models:
Outdoor Units;
RAS-3HVRNM2
RAS-4HVRNM2
RAS-5HVRNM2
RAS-6HVRNM2
RAS-7HVRNM2
P5414950
IMPORTANT:
READ AND UNDERSTAND
THIS MANUAL BEFORE
USING THIS HEAT-PUMP
AIR CONDITIONERS.
KEEP THIS MANUAL FOR
FUTURE REFERENCE.
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Hitachi RAS-5HVRNM2 Specifications

General IconGeneral
Cooling Capacity5.0 kW
Power Supply220-240V, 50Hz
RefrigerantR410A
Energy Efficiency Ratio (EER)3.21
Coefficient of Performance (COP)3.61
TypeSplit System

Summary

1. Safety Summary

2. Structure

2.1 Name of Parts

Lists and illustrates the components of the outdoor unit.

2.2 Necessary Tools and Instrument List for Installation

Specifies the required tools and instruments for installation.

3. Before Installation

3.1 Selection of Unit Model

Guide to selecting the appropriate outdoor and indoor unit model.

3.2 Indoor Unit Selection for Multiple Connected Installation

Criteria for selecting indoor units in a multi-unit system.

3.3 Standard Combination of Outdoor Unit and Indoor Unit

Standard combinations of outdoor and indoor units for various models.

3.4 Enhanced Combination of Outdoor Unit and Indoor Unit

Guidelines for enhanced combinations of outdoor and indoor units.

4. Transportation and Handling

5. Outdoor Unit Installation

5.1 Factory-Supplied Accessories

Lists accessories provided with the outdoor unit.

5.2 Initial Check

Pre-installation checks for the outdoor unit.

5.3 Service Space

Specifies required clearances for installation and maintenance.

5.4 Installation Work

Details the procedures for securing the unit and fixing it.

6. Refrigerant Piping Work

6.1 Piping Materials

Specifies requirements for copper pipes and their preparation.

6.2 Flaring and Joint

Instructions on flaring dimensions and joint selection for pipes.

6.3 Pipe Selection

Guidance on selecting pipe sizes based on unit capacity and length.

6.4 Piping Connection

Details stop valve positions and connection methods.

6.5 Connecting Refrigerant Pipings

Procedures for connecting refrigerant pipes and tightening flare nuts.

7. Electrical Wiring

7.1 General Check

Checks for electrical components, power supply, and wiring.

7.2 Wiring Connection

Instructions for connecting wiring terminals and cables.

8. Setting of Dip Switch

Dip Switch Settings for Operation Modes

Configuration of DSW1, DSW2, DSW3 for various operational settings.

H-LINK System Transmission Settings

Settings for outdoor unit number, refrigerant cycle, and terminal resistance.

9. Additional Refrigerant Charge

9.1 Air-Tight Test

Procedure for testing piping for leaks using nitrogen gas.

9.2 Vacuum Pump and Refrigerant Charge

Steps for vacuum pumping and charging refrigerant.

9.3 Refrigerant Charging Quantity

Calculating and adding refrigerant based on piping length.

10. Test Run

10.1 Before Test Run

Pre-checks before initiating the unit's test run.

10.2 Test Run

Procedure for conducting the unit's test run and checking operation.

10.3 Optional Function Setting

How to set optional functions via dip switches and menu.

11. Safety and Control Device Setting

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