GENERAL INFORMATION
PMML0385 rev.2 - 12/2018
2
1.3.2  Additional information about safety
! DANGER
• HITACHIisnotabletoforeseeallthecircumstanceswhichmay
resultinapotentialdanger.
• Donotpourwaterintheindoororoutdoorunit.Theseproducts
arettedwithelectriccomponents.Ifwatercomesintocontact
with electric components, this will cause a serious electric
shock.
• Donothandleoradjustthesafetydevicesinsidetheindoorand
outdoorunits.Thehandlingoradjustmentofthesedevicesmay
resultinseriousaccident.
• Donotopentheservicecoveroraccesspaneloftheindoorand
outdoorunitswithoutdisconnectingthemainsupply.
• In the event of re, switch off the mains, put out the re
immediatelyandcontactyourservicesupplier.
• Checkthattheearthcableiscorrectlyconnected.
• Connecttheunittoacircuitbreakerofthespeciedcapacity.
! CAUTION
•  Refrigerant leaks may hinder respiration as the gas displaces the air 
in the room.
•  Fit the indoor unit, the outdoor unit, the remote control and the cable 
at a minimum of 3 metres away from sources of strong radiation from 
electromagnetic waves, such as medical equipment.
•  Do not use sprays, such as insecticides, varnishes or enamels or any 
other inammable gas within a metre of the system.
•  If the circuit breaker or supply fuse of the unit comes on frequently, 
stop the system and contact the service suppler.
•  Do not carry out maintenance or inspection work yourself. This work 
must be carried out by qualied service personnel with suitable tools 
and resources for the work.
•  Do not place any foreign material (branches, sticks, etc.) in the air 
inlet or outlet of the unit. These units are tted with high speed fans 
and contact with any object is dangerous.
•  This  appliance  must  be  used  only  by  adult  and  capable  people, 
having received the technical information or instructions to handle this 
appliance properly and safely.
•  Children should be supervised to ensure that they do not play with 
the appliance.
? NOTE
•  The air in the room should be renewed and the room ventilated every 
3 or 4 hours.
•  The  system  tter  and  specialist  shall  provide  anti-leak  safety  in 
accordance with local regulations.
1.4  PURPOSE OF THIS MANUAL
This air conditioner has been designed for standard air 
conditioning for human beings. For use in other applications, 
please contact your HITACHI dealer or service contractor.
The air conditioning system should only be installed by qualied 
personnel, with the necessary resources, tools and equipment, 
who are familiar with the safety procedures required to 
successfully carry out the installation.
The supplementary information about the purchased products 
is supplied in a CD-ROM, which can be found bundled with the 
outdoor unit. In case that the CD-ROM is missing or it is not 
readable, please contact your HITACHI dealer or distributor.
PLEASE READ THE MANUAL AND THE FILES ON THE 
CD-ROM CAREFULLY BEFORE STARTING WORK ON THE 
INSTALLATION OF THE AIR CONDITIONING SYSTEM. 
Failure to observe the instructions for installation, use and 
operation described in this documentation may result in 
operating failure including potentially serious faults, or even the 
destruction of the air conditioning system.
It is assumed that the air conditioning system will be installed 
and maintained by responsible personnel trained for the 
purpose. If this is not the case, the customer should include all 
the safety, caution and operating signs in the native language of 
the personnel responsible.
Do not install the unit in the following places, as this may lead to 
a re, deformities, rusting or faults:
•  Places where oil is present (including oil for machinery).
•  Places with a high concentration of sulphurous gas, such as 
spas.
•  Places where ammable gases may be generated or 
circulate.
•  Places with a saline, acidic or alkaline atmosphere.
Do not install the unit in places where silicon gas is present. Any 
silicon gas deposited on the surface of the heat exchanger will 
repel water. As a result, the condensate water will splash out 
of the collection tray and into the electrical box. Water leaks or 
electrical faults may eventually be caused.
Do not install the unit in a place where the current of expelled 
air directly affects animals or plants as they could be adversely 
affected.