1  GENERAL INFORMATION
1.1  GENERAL NOTES
No part of this publication may be reproduced, copied, led 
or transmitted in any shape or form without the permission of 
HITACHI Air Conditioning Products Europe, S.A.U.
Within the policy of continuous improvement of its products, 
HITACHI Air Conditioning Products Europe, S.A.U. reserves 
the right to make changes at any time without prior notication 
and without being compelled to introducing them into products 
subsequently sold. 
This document may therefore have been subject to 
amendments during the life of the product.
HITACHI makes every effort to offer correct, up-to-date 
documentation. Despite this, printing errors cannot be controlled 
by HITACHI and are not its responsibility. 
As a result, some of the images or data used to illustrate this 
document may not refer to specic models. No claims will be 
accepted based on the data, illustrations and descriptions 
included in this manual.
2  SAFETY
2.1  APPLIED SYMBOLS
During normal air conditioning system design work or unit 
installation, greater attention must be paid in certain situations 
requiring particular care in order to avoid injuries an damage to 
the unit, the installation or the building or property.
Situations that jeopardise the safety of those in the surrounding 
area or that put the unit itself a risk will be clearly indicated in 
this manual.
To indicate these situations, a series of special symbols will be 
used to clearly identify these situations.
Pay close attention to these symbols and to the messages 
following them, as your safety and that of others depends on it.
! DANGER
• The text following this symbol contains information and
instructions relating directly to your safety and physical
wellbeing.
• Nottakingtheseinstructionsintoaccountcouldleadtoserious,
very serious or even fatal injuries to you and others in the
proximitiesoftheunit.
In the text following the danger symbol you can also nd 
information on safe procedures during unit installation.
! CAUTION
• Thetextfollowingthissymbolcontainsinformationandinstructions
relatingdirectlytoyoursafetyandphysicalwellbeing.
• Nottakingtheseinstructionsintoaccountcouldleadtominorinjuries
toyouandothersintheproximitiesoftheunit.
• Nottakingtheseinstructionsintoaccountcouldleadtounitdamage.
In the text following the caution symbol you can also nd 
information on safe procedures during unit installation.
? NOTE
• Thetextfollowingthissymbolcontainsinformationorinstructionsthat
maybeofuseorthatrequireamorethoroughexplanation.
• Instructions regarding inspections to be made on unit parts or
systemsmayalsobeincluded.
GENERAL INFORMATION