HITACHI RAS-4-6-H-V-RC2E Air Conditioner User Manual

: June 10, 2024
: Hitachi

Table of Contents

HITACHI RAS-4-6-H-V-RC2E Air Conditioner
R32 Refrigerant circuit
OUTDOOR UNIT
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HITACHI RAS-4-6-H-V-RC2E Air Conditioner

Specifications in this manual are subject to change without notice in order that Hitachi may bring the latest innovations to their customers. Whilst every effort is made to ensure that all specifications are correct, printing errors are beyond Hitachi’s control; Hitachi cannot be held responsible for these errors.

ATTENTION
This product shall not be mixed with general house waste at the end of its life and it shall be retired according to the appropriated local or national regulations in a environmentally correct way.
Due to the refrigerant, oil and other components contained in Air Conditioner, its dismantling must be done by a professional installer according to the applicable regulations.
Contact to the corresponding authorities for more information.

WARNING
BURST HAZARD
Do not allow air or any gas mixture containing oxygen into refrigerant cycle (i.e. piping)

WARNING
This symbol displayed on the unit indicates that this appliance is filled with R32, an odorless flammable refrigerant gas with low burning velocity (A2L class pursuant to ISO 817). If the refrigerant is leaked, there is a possibility of ignition if it enters in contact with an external ignition source.

CAUTION
This symbol displayed on the unit indicates that this appliance shall be handled by authorized service personnel only, referring to the Installation Manual.

CAUTION
This symbol displayed on the unit indicates that there is relevant information included in the Operation Manual and/or Installation Manual.

CAUTION
For more information, see the Installation and Operation Manual.

RISK OF EXPLOSION
The compressor must be stopped before removing the refrigerant pipes.
All service valves must be fully closed after pumping down operation.

Make sure that unit installation and refrigerant piping installation comply with applicable legislation in each country. Also, in Europe, EN378 must be complied, as it is the applicable standard.
Verify, in accordance with the manuals which appear in the outdoor and indoor units, that all the information required for the correct installation of the system is included. If this is not the case, contact your distributor.

Indoor Unit	Outdoor Unit

Installation and operation manual

| Installation manual
CD-ROM
Additional safety manual for R32 refrigerant air conditioner and heat pump according to IEC 60335-2-40:2018

R32 Refrigerant circuit

The unit installation and refrigerant piping should comply with the relevant local and national regulations for the designed refrigerant.
Due to R32 refrigerant and depending on final refrigerant charge amount, a minimum floor area for installation must be considered.

If total refrigerant charge amount <1.84kg, there are no additional minimum floor area requirements.
If total refrigerant charge amount ≥1.84kg, there are additional minimum floor area requirements to be checked.

NOTE
In case of not achieving the minimum floor area, contact with your dealer.

DANGER

Check to ensure that the number of below is within 0.44kg/m3. Otherwise it may cause danger situation if the refrigerant in the outdoor unit leaks into the room where this indoor unit is installed. (Total refrigerant quantity per one outdoor unit) (Volume of the room where this indoor unit is installed) ≤0.44kg/m3
For detail, refer to the Installation Manual for outdoor unit.
Make sure that the refrigerant leakage test should be performed. The refrigerant (Fluorocarbon R410A) for this unit is incombustible, nontoxic and odorless. However if the refrigerant is leaked and is contacted with fire, toxic gas will generate. Also because the fluorocarbon is heavier than air, the floor surface will be filled with it, which could cause suffocation.
Use the specified non-flammable refrigerant (R410A) to the outdoor unit in the refrigerant cycle. Do not charge material other than R410A into the unit such as hydrocarbon refrigerants (propane or etc.), oxygen, flammable gases (acetylene, etc.) or poisonous gases when installing, maintaining and moving. These flammables are extremely dangerous and may cause an explosion, a fire, and injury.

Following Regulation EU No. 517/2014 on Certain Fluorinated Greenhouse gases, it is mandatory to fill in the label attached to the unit with the total amount of refrigerant charged on the installation.
Do not vent R32 into the atmosphere: R32 are fluorinated greenhouse gases covered by the Kyoto protocol global warming potential (GWP) R32 = 675.
Do not vent R410A into the atmosphere: R410A are fluorinated greenhouse gases covered by the Kyoto protocol global warming potential (GWP) R410A = 2088.
Tn of CO2 equivalent of fluorinated greenhouse gases contained is calculated by indicated GWP * Total Charge (in kg) indicated in the product label and divided by 1000.

Instructions to fill in the “F-Gas Label”:

Fill in the Label with indelible ink the refrigerant amounts:  – Factory Charge,  – Additional Charge,  – Total Charge &  t CO2.
Stick the Protection Plastic Film on the F-Gas Label (delivered in a plastic bag with the Manual). To see Figure nº 2.

MODELS CODIFICATION
Important note: Please, check, according to the model name, which is your air conditioner type, how it is abbreviated and referred to in this instruction manual. This Installation and Operation Manual is only related to Indoor Units combined with Outdoor Units RAS-(4-6)H(V)R(C/P)2E / RAS-(4-6)H(V)N(C/P)2E.

OUTDOOR UNIT

The English version is the original one; other languages are translated from English. Should any discrepancy occur between the English and the translated versions, the English version shall prevail.

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