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Hitachi RAS-2HVRN2 User Manual

Hitachi RAS-2HVRN2
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INSTALLATION AND OPERATION MANUAL
MANUAL DE INSTALACIÓN Y FUNCIONAMIENTO
INSTALLATIONS- UND BETRIEBSHANDBUCH
MANUEL D’INSTALLATION ET DE FONCTIONNEMENT
MANUALE D’INSTALLAZIONE E D’USO
MANUAL DE INSTALAÇÃO E DE FUNCIONAMENTO
INSTALLATIONS- OG BETJENINGSVEJLEDNING
INSTALLATIE- EN BEDIENINGSHANDLEIDING
INSTALLATIONS- OCH DRIFTHANDBOK
ǼīȋǼǿȇǿǻǿȅ ǼīȀǹȉǹȈȉǹȈǾȈ Ȁǹǿ ȁǼǿȉȅȊȇīǿǹȈ
YUTAKI S Series
RAS-(2-6)(HVRN2/H(V)RNME-AF)
RWM-(2.0-6.0)FSN3E
Indoor Unit
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Hitachi RAS-2HVRN2 Specifications

General IconGeneral
Cooling Capacity2.5 kW
Power Supply220-240V, 50Hz
RefrigerantR410A
Indoor Unit Weight9 kg
TypeSplit

Summary

Model Identification and Specifications

Model Coding Overview

Explains the system for identifying different YUTAKI S series models and their configurations.

Indoor Unit Model Codification Details

Provides detailed breakdown of indoor unit model numbers, including type, power, and refrigerant.

Outdoor Unit and Heat Pump Model Identification

Details outdoor unit types and heat pump model categorizations.

Detailed Model Codification Breakdown

Explains the codification for unit type, compressor power, phase, inverter, and refrigerant.

System Accessories Overview

Room Thermostat Accessories

Lists and describes various room thermostat models for system integration.

Other System Accessories

Lists additional accessories for system combinations beyond thermostats.

Additional System Accessories

Hot Water Tank Accessories

Tank Protection and Water Valve Accessories

KNX Interface Accessory

Safety Overview and Important Notices

Hazard and Cautionary Warnings

Details critical safety warnings regarding hazards and cautionary measures.

Important General Notice

Provides essential information and context for using the manual.

Operating Temperature Ranges

Lists the minimum and maximum operating temperatures for various modes.

System Description and Installation Configurations

System Description

Explains the basic functionality and components of the air/water heat pump system.

Installation Configuration Types

Describes different system configurations like monovalent, monoenergetic, and bivalent.

Typical Installation Patterns

Installation Example 1: Heating Only

Illustrates a typical setup for heating applications with radiators or floor heating.

Installation Example 2: Heating and Hot Water Tank

Shows a typical configuration for heating with a hot water storage tank.

More Installation Patterns

Installation Example 3: Dual Heating Circuits

Illustrates a setup with two heating circuits, one for radiators and one for floor heating.

Installation Example 4: Heating, Storage Tank, and Dual Circuits

Depicts a configuration for heating, hot water tank, and dual heating circuits.

Combined Heating and Boiler Installation Patterns

Installation Example 5: Alternating Boiler Combinations

Shows installations with alternating boiler combinations using hydraulic separators.

Heating, Storage Tank, and Boiler Combination Patterns

Installation Example 6: Heating, Storage Tank, Alternating Boiler

Illustrates a configuration with heating, storage tank, and alternating boiler.

Installation Example 7: Dual Heating, Storage Tank, Alternating Boiler

Depicts a setup with dual heating, storage tank, and alternating boiler.

Heating, Storage Tank, and Alternating Boiler Patterns

Installation Example 8: Dual Heating, Storage Tank, Alternating Boiler

Shows a configuration for dual heating, storage tank, and alternating boiler.

Cooling System Configuration Patterns

Installation Example 9: Direct Cooling

Illustrates a direct cooling installation with fan coils and optional room thermostat.

Installation Example 10: Cooling with Storage Tank

Depicts a cooling setup with a hot water storage tank heated by a pump.

Floor Cooling and Storage Tank Cooling Patterns

Installation Example 11: Floor Cooling Only

Shows a configuration for floor cooling only, with heating circuits closed.

Installation Example 12: Floor Cooling with Storage Tank

Illustrates floor cooling with a hot water storage tank heated by a pump.

Multiple Cooling Zone and Cooling with Storage Tank Patterns

Installation Example 13: Dual Cooling Zones

Depicts a setup for two cooling zones using fan coils and floor cooling.

Installation Example 14: Dual Cooling Zones with Storage Tank

Shows a configuration for dual cooling zones with a storage tank heated by a pump.

Additional System Combinations

Swimming Pool Combination

Describes the system configuration for swimming pool heating.

Solar Collector Option Introduction

Introduces the option to use solar collectors for domestic hot water heating.

Solar Collector and Buffer Tank Combinations

Solar Collector Option 2

Details the second option for solar collector integration with the system.

Buffer Tank Combination

Explains the configuration using a buffer tank for temperature management.

Component Identification and Layout

RWM Series Component Identification

Identifies the main components of the RWM series indoor units.

Control Box Layout

Shows the internal layout of the control box and its components.

Refrigerant Circuit Diagram and Components

Refrigerant Circuit Diagram

Illustrates the refrigerant flow and key components in the cooling circuit.

Indoor Unit Installation Procedures

Installation Location Selection

Guidelines for choosing a suitable and safe installation location for the indoor unit.

Indoor Unit Handling

Instructions for safely unpacking and moving the indoor unit.

Initial Checks Before Installation

Procedures to verify unit condition and installation readiness.

Unit Installation Steps

Wall Bracket Installation

Step-by-step guide for mounting the wall bracket and the indoor unit.

Cover Installation

Instructions for installing the unit's front cover after pipework.

Drain Pan Mounting

Procedure for installing the drain pan for cooling applications.

Service Area and General Pipe Laying Notes

Required Service Area

Specifies the necessary clearance around the indoor unit for maintenance.

General Notes for Pipe Laying

Provides essential guidelines and precautions before laying refrigerant and water pipes.

Refrigerant and Water Pipe Hanging and Connection

Hanging Refrigerant and Water Lines

Instructions on how to properly hang refrigerant and water pipes to avoid noise and damage.

Pipe Laying and Connection

Details on routing and connecting refrigerant pipes, including size specifications.

Pipe Specifications and Refrigerant Handling

Conical Pipe Dimensions

Provides dimensions for conical pipes used in the system.

Copper Pipe Thickness

Specifies the thickness of copper pipes used for refrigerant lines.

Conical Nut and Soldering Procedures

Details conical nut sizes, tightening torque, and safe soldering practices.

Refrigerant Quantity and Handling

Information on correct refrigerant quantity and safe handling practices.

Water Pipe Laying and Connection

General Notes for Water Pipes

Guidelines for installing and connecting water pipes, including flow resistance.

Water Pipe Connection Details

Specifies pipe positions, connection sizes, and installation of shut-off valves.

Drainage and Water Circuit Filling

Drain Pipe Installation

Instructions for connecting the drain pipe to the main drainage system.

Water Circuit Filling Procedure

Steps for filling the water circuit and recommended pressure levels.

Water Flow Rate Adjustment

Pressure Loss Measurement

How to measure pressure loss in the circuit using connection ports.

Pump Performance Curves and Speed Selection

Using pump curves to select the correct pump speed for the circuit.

Water Flow Rate Setting

Procedure to adjust water flow rate by partially closing shut-off valves.

Pump Performance Curves and Pressure Diagrams

Cable Connection and General Checks

General Electrical Component Checks

Ensuring electrical components meet standards and norms.

Electromagnetic Compatibility Check

Following EMC directive for system impedance and voltage stability.

General Wiring Between Indoor and Outdoor Units

Recommended Cable Specifications and Switch Connections

Minimum Cable Diameter Requirements

Specifies the minimum required cable diameter for power and communication.

Switch Connection Types

Guidance on selecting and connecting circuit breakers and residual current devices.

Indoor Unit Cable Connection Details

Indoor Unit Wiring Instructions

Detailed instructions for connecting cables to the indoor unit's terminal blocks.

Terminal Block Connections Overview

Terminal Block TB1 Connections

Details the connections for the main power supply (TB1).

Terminal Block TB2 Connections

Details the connections for communication and various control signals (TB2).

Detailed Terminal Block Connections

Main Power Supply (TB1) Connection

Specific connection points for the main power supply to TB1.

Communication Cable (TB2) Connection

Instructions for connecting indoor/outdoor communication cables to TB2.

Room Thermostat Configuration

Guidance on configuring room thermostats with the system.

Swimming Pool Input (TB2) Connection

Details for connecting the swimming pool pump signal to TB2.

Additional Terminal Block Connections

Tariff Switch Input (TB2) Connection

Connection for tariff input signal to TB2.

Solar Input / Thermostat for Circuit 2 (TB2) Connection

Connecting solar pump signal or thermostat for second circuit to TB2.

Hot Water Valve (TB2) Connection

Connection details for the hot water valve to TB2.

Swimming Pool Valve (TB2) Connection

Connection details for the swimming pool valve to TB2.

Ventil, Pump, Boiler, and Heater Output Connections

Mixing Valve for Circuit 2 Control (TB2)

Connection for the mixing valve controlling the second circuit's temperature.

Water Pump 3 for Hydraulic System (TB2)

Connection for an additional water pump (WP3) in hydraulic systems.

Water Pump 2 for Circuit 2 Control (TB2)

Connection for the secondary water pump (WP2) for the second circuit.

Boiler Output Connection (TB2)

Connection for the boiler output signal.

Electric Heater/Hot Water Tank Output (TB2)

Connection for electric heater activation for hot water tanks.

Solar Output and Thermistor Connections

Solar Output Connection (TB2)

Connection for solar output signal to TB2.

Thermistor Connections

Details connections for various thermistors used for temperature sensing.

DIP Switch Settings and Functions

DIP and Rotary Switch Positions

Illustrates the location of DIP switches and rotary switches on the PCB.

DIP and Rotary Switch Functions

Explains the purpose and function of each DIP and rotary switch.

Additional DIP Switch Settings and Functions

Optional Functions 1 Settings (DSW3)

Configuration settings for optional functions like 3-phase heater and defrost.

Optional Functions 2 Settings (DSW4)

Settings for optional functions like heater disable and cooling mode.

Additional Settings 2 (DSW5)

Settings for ambient sensor selection and configuration.

Unused Switch Settings (DSW6-DSW9)

Notes on DIP switches that are not used for specific configurations.

Refrigerant System Settings (RSW1, RSW2)

Settings for the refrigerant system, likely related to model or capacity.

Indoor Unit Address Settings (RSW3, RSW4)

Configuration of the address for indoor units in the system.

LED Indicators and Operation Display

LED Indicator Descriptions

Explains the meaning of each LED indicator on the unit.

7-Segment Operation Display

Describes the status codes and information shown on the 7-segment display.

Test Display Functionality

Explains how to activate and use the test display mode.

Test Display Summary Table

Pre-Operation Checks and Indoor Unit Operation

Pre-Operation Precautions

Important steps and warnings to follow before the initial operation of the system.

Operation Switch Locations

Identifies the location of controls like manometer, LCD, and Run/Stop buttons.

Fault Indication Displays

Describes how error codes and fault conditions are displayed on the unit.

Commissioning Procedures and Pre-Checks

Pre-Commissioning Checks

Essential checks for unit condition, electrical safety, and hydraulic circuit integrity.

Electrical System Verification

Checking wiring, grounding, voltage, and component compliance.

Hydraulic Circuit Verification

Ensuring the water circuit is flushed, filled, leak-free, and correctly pressurized.

Refrigerant Circuit Check and Low Temperature Commissioning

Refrigerant Circuit Inspection

Checking for refrigerant leaks and ensuring correct pipe sizes and fill levels.

Commissioning at Low Ambient Temperatures

Procedure for commissioning the unit in cold ambient conditions, including frost protection.

Indoor Unit Test Run Procedure

Performing the Indoor Unit Test Run

Step-by-step guide to conducting a test run for the indoor unit's operation.

LCD User Interface Overview

LCD Hardware Description

Overview of the LCD control unit's hardware and its capabilities.

Button Definitions

Explains the function of each button on the LCD control panel.

Main Screen Overview

Describes the information displayed on the main 'Overall Overview' screen.

LCD User Interface Details

Time and Date Settings

How to set and view the current time and date.

Alarm Indicator

How alarm conditions and codes are displayed.

Circuit I & II Control

Managing heating/cooling circuits, including temperature settings and status.

Hot Water Control

Settings for controlling hot water temperature and heater operation.

Swimming Pool Control

Settings for controlling swimming pool temperature and operation.

Device Mode Selection (Heating/Cooling)

How to select the operating mode (heating or cooling).

Hot Water Heater Operation

Information regarding the operation of the hot water heater.

Configuration Menu Access

How to access and navigate the configuration menus.

Timer Display Indicator

Indicates when a timer is active and its settings.

Device Status Signals

Various status indicators for system components and modes.

Central Control Display

Indicates whether central or local control is active.

LCD Interface Symbols Description

Circuit Status Symbols

Symbols indicating the status of heating/cooling circuits and TWE/SWB.

Temperature and Mode Symbols

Symbols for temperature settings, lock status, and operating modes.

Operation Status Symbols

Symbols for pump, heater stages, hot water, installer mode, pool, solar, compressor.

More LCD Interface Symbols

Alarm and Boiler Indicators

Symbols indicating active alarms and boiler system status.

Tariff, Timer, and Defrost Indicators

Symbols for tariff control, timer operation, and defrost function.

Test Run and Summer Shut-off Indicators

Symbols indicating test run activation and summer shut-off status.

Menu and Central Control Indicators

Symbols for accessing menus and indicating central control mode.

Menu Navigation and Configuration Modes

Configuration Mode Selection

Overview of how to access user and installer modes for configuration.

User Mode Configuration

Details on accessing and navigating the user configuration menu.

Installer Mode Access

Procedure for accessing the installer mode with password.

Installer Menu Contents

Device Configuration Settings

Installer settings for device parameters, system operation, and status.

General Parameter Configuration

Installer settings for general parameters like room thermostat options.

System Configuration Settings

Installer settings for system configuration, user rights, and operating modes.

Heating Configuration

Installer settings for heating parameters, including water calculation.

Cooling Configuration

Installer settings for cooling parameters, including water calculation.

TWE Configuration

Installer settings for the TWE function.

Swimming Pool Configuration

Installer settings for the swimming pool function.

Timer Unit Configuration

Installer settings for timer activation and program configuration.

Auxiliary Heating Configuration

Installer settings for auxiliary heating sources like boilers and electric heaters.

Menu Navigation and Parameter Display

Navigating Device Configuration

Explains how to navigate through the device configuration menu.

Navigating Controller Configuration

Explains how to navigate through the controller configuration menu.

Returning to Main Menu

Instructions on how to exit menus and return to the main screen.

Operation Display Parameters

Lists the parameters available for viewing on the operation display.

System Operation Parameters

Operating Modes and Statuses

Details operational modes like heating, cooling, TWE, SWB, and alarm status.

Device Status Parameters

Parameters related to device status, such as expansion valve openings and compressor current.

Current Temperature Readings

Lists all temperature sensors and their readings (water, air, gas, liquid).

Setpoint Values

Parameters for setting target temperatures for water, room, and swimming pool.

Alarm History Parameters

Parameters related to logging and viewing alarm history.

General and Specific Device Parameters

General Parameter Settings

Settings for general parameters like room thermostat options and central control.

Room Thermostat Configuration Options

Detailed settings for room thermostats, including heating/cooling preferences and compensation.

Central Control and Cooling Circuit Addressing

Configuration for central control and setting addresses for cooling circuits.

Indoor Unit Addressing

Setting the address for indoor units to ensure proper communication.

Room Thermostat and Circuit Connection Details

Room Thermostat Variable Settings

Detailed variables for room thermostat configuration, like connection circuits and compensation factors.

Connection Circuits Setup

Procedure for linking the room thermostat with the wireless receiver.

Thermostat and Circuit Pairing Process

Circuit Assignment for Second Loop

Assigning connection circuits for the second loop of the system.

Thermostat and Circuit Pairing Summary

Step-by-step summary for pairing thermostats and circuits.

Central Control and System Configuration

Central Control Operation Types

Defines operation types (Local, Air, Water, Full) for central control.

System Configuration Options

Overview of available system configuration settings.

User Rights and Heating Configuration

User Rights Management

Settings to define user permissions for functions like water calculation and anti-legionella.

Heating Configuration Settings

Configuration options for heating, including water calculation types and temperatures.

Heating Water Calculation Temperatures

Setting water calculation temperatures for heating circuits C1 and C2.

Heating Calculation Modes

Points Calculation Mode

Configures heating temperature based on four defined points.

Slope Calculation Mode

Sets heating temperature based on a configurable slope and ambient temperature.

Fixed Temperature Mode

Sets the circuit temperature to a fixed defined value.

Disable Calculation Mode

Disables the calculation mode for a specific circuit.

Heating Temperature Range Settings

Temperature Ranges for Circuits C1 and C2

Defines the maximum and minimum flow temperatures for heating circuits.

Cooling Configuration and Water Calculation

Cooling Settings

Configuration options for cooling mode.

Cooling Water Calculation Temperatures

Setting water calculation temperatures for cooling circuits C1 and C2.

Cooling Calculation Modes

Points Calculation Mode for Cooling

Configures cooling temperature based on four defined points.

Fixed Temperature Mode for Cooling

Sets cooling circuit temperature to a fixed defined value.

Disable Cooling Mode

Disables the calculation mode for a cooling circuit.

Cooling Temperature Range Settings

Temperature Ranges for Cooling Circuits C1 and C2

Defines the maximum and minimum flow temperatures for cooling circuits.

TWE and Hot Water Tank Configuration

TWE Configuration Settings

Parameters for TWE status, mode, setpoints, and time delays.

Hot Water Tank Variables

Variables related to the hot water tank, including status and temperature setpoints.

Anti-Legionella and Swimming Pool Configuration

Anti-Legionella Function Settings

Configuration for water disinfection function, including status, schedule, and temperature.

Swimming Pool Function Settings

Settings for swimming pool operation, including status and temperature control.

Timer Unit Configuration

Timer Unit Overview

Explains the timer unit's capability to create up to 14 configurations.

Timer Activation

Enables or disables the device timer function.

Program Configuration

Allows setting up daily timer programs for different configurations.

Timer Reset and Auxiliary Heating Options

Resetting Timer Configurations

Resets all timer configurations to their default deactivated state.

Auxiliary Heating Source Selection

Options for selecting the heating source: electric heater, boiler, or solar.

Electric Heater, Boiler, and Solar Configuration

Electric Heater Configuration

Settings related to the electric heater, including bivalent point and offsets.

Boiler Configuration Settings

Configuration parameters for the boiler, such as bivalent point and time settings.

Solar Configuration Settings

Settings for the solar collector configuration.

Mixing Valve for Circuit 2 Configuration

Settings for controlling the mixing valve of the second heating circuit.

Water Pump and Optional Function Settings

Water Pump Parameters

Settings for water pump operation, including minimum on/off times and stop conditions.

Optional Function Settings

Configuration options for functions like summer shut-off and tariff control.

Optional Functions, Test Run, and Screed Drying

Summer Shut-off Configuration

Settings to automatically shut off the system during summer based on temperature.

Anti-Seize Protection (Festlaufschutz)

Configuration for the anti-seize function for pumps and valves.

Tariff Function Settings

Settings for the tariff function, controlling operation based on electricity tariffs.

Hydraulic Separator Status

Displays the status of the hydraulic separator.

Test Run Procedure

Procedure for performing a test run of the system.

Screed Drying Procedure

Instructions for the screed drying function to cure new floor heating screed.

Screed Drying Process and Default Settings Restore

Screed Drying Process Screens

Screens displayed during the screed drying process, including remaining time.

Restoring Default Settings

Procedure to reset the device settings to factory defaults.

Controller Configuration Menu

Time and Date Settings

Setting the system's time, date, and time format.

Language Selection

Choosing the display language from a list of available options.

LCD Power Saving Settings

Adjusting LCD backlight settings to reduce energy consumption.

Screen Contrast Adjustment

Adjusting the contrast of the LCD screen for better visibility.

Controller Firmware Information

Displaying information about the controller's PCB and firmware versions.

Controller Configuration Details

Language Selection Details

Details on how to select the display language.

LCD Power Saving Details

Details on how the LCD power saving function works.

Screen Contrast Adjustment Details

Details on how to adjust screen contrast.

Controller Firmware Information Details

Details about the controller's firmware versions.

Safety Overview and Control Settings Summary

YUTAKI-S Unit Safety and Control Settings

Summarizes safety features and control settings for YUTAKI-S units.

Basic Troubleshooting Guide

Troubleshooting No Functionality

Steps to take when the unit is not operating at all.

Troubleshooting Persistent Problems

Information required when contacting support for ongoing issues.

Reading Alarm Codes

How to interpret and display alarm codes from the remote control.

Detailed Troubleshooting: Alarm Codes

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