General Information; Safety - Hitachi YUTAKI S Series Instruction Manual

GENERAL INFORMATION

1 GENERAL INFORMATION
No part of this publication may be reproduced, copied, filed
or transmitted in any shape or form without the permission of
Johnson Controls-Hitachi Air Conditioning Spain, S.A.U.
Within the policy of continuous improvement of its products,
Johnson Controls-Hitachi Air Conditioning Spain, S.A.U.
reserves the right to make changes at any time without prior
notification and without being compelled to introducing them into
products previously 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 specific 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 heat pump system design work or unit installation,
greater attention must be paid in certain situations requiring
particular care in order to avoid damage to the unit, the
installation or the building or property.
Situations that pose a risk to the safety of those in the surrounding
area or to the unit itself are clearly indicated in this manual.
A series of special symbols are 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.
This appliance is filled with R32, an
odourless
refrigerant. If the refrigerant is leaked,
there is a possibility of ignition if it
enters in contact with an external ignitions
source.
!
D A N G E R
• The text following this symbol contains information and
instructions relating directly to your safety.
• Not taking these instructions into account could lead to serious,
very serious or even fatal injuries to you and others.
In the texts following the danger symbol you can also find
information on safety procedures during unit installation.
!
D A N G E R
This symbol shows that this equipment uses a low burning
velocity refrigerant. If the refrigerant is leaked, there is a
possibility of ignition if it enters in contact with an external
ignition source.
1 PMML0574 rev.0 - 09/2021
low burning velocity
RISK OF EXPLOSION
The compressor must be stopped before removing the refrigerant pipes.
All service valves must be fully closed after pumping down operation.
!
C A U T I O N
• The text following this symbol contains information and instructions
relating directly to your safety.
• Not taking these instructions into account could lead to minor injuries
to you and others.
• Not taking these instructions into account could lead to unit damage.
In the texts following the caution symbol you can also find
information on safety procedures during unit installation.
?
N O T E
• The text following this symbol contains information or instructions that
may be of use or that require a more thorough explanation.
• Instructions regarding inspections to be made on unit parts or systems
may also be included.
Symbol
Before installation, read the installation and
operation manual, and the wiring instruction sheet.
Before performing maintenance and service tasks,
read the service manual.
For more information, see the installer and user
reference guide.
2.2 ADDITIONAL INFORMATION ABOUT
SAFETY
!
D A N G E R
• DO NOT CONNECT THE POWER SUPPLY TO THE INDOOR UNIT
PRIOR TO FILLING THE SPACE HEATING CIRCUIT (AND DHW
CIRCUIT IF IT WERE THE CASE) WITH WATER AND CHECKING
WATER PRESSURE AND THE TOTAL ABSENCE OF ANY WATER
LEAKAGE.
• Do not pour water over the indoor unit electrical parts. If the
electrical components are in contact with water a seri ous
electrical shock will take place.
• Do not touch or adjust the safety devices inside the air to water
heat pump. If these devices are touched or adjusted, a serious
accident can take place.
• Do not open the service cover or access inside the air to water
heat pump without disconnecting the main power supply.
• In case of fire Turn OFF the main switch, put out the fire at once
and contact your service contractor.
• It must ensure that the air to water heat pump cannot op erate
accidentally without water neither with air inside hydraulic
system.
!
C A U T I O N
• Do not use any sprays such as insecticide, lacquer, hair spray or other
flammable gases within approximately one meter from the system.
• If installation circuit breaker or the unit fuse is often activated, stop the
system and contact your service contractor.
• Do not make service or inspections tasks by yourself. This work must
be performed by a qualified service person.
Explanation