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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
injuries and 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.
RISK OF EXPLOSION:
This symbol shows that this equipment uses an
odourless low burning velocity refrigerant. This
appliance is filled with R32. If the refrigerant is
leaked, there is a possibility of ignition if it enters
in contact with an external ignition source.
!
DANGER
• The text following this symbol contains information and
instructions relating directly to your safety, in addition to
hazards or unsafe practices which could result in severe
personal injuries or death.
• Not taking these instructions into account could lead to
serious, very serious or even fatal injuries to you and others
in the proximities of the unit.
In the text following the danger symbol you can also
find information on safe procedures during unit
installation.
!
CAUTION
• The text following this symbol contains information and
instructions relating directly to your safety, in addition to
hazards or unsafe practices which could result in minor personal
injury or product or property damage.
PMML0578 rev.0 - 04/2022
• Not taking these instructions into account could lead to minor
injuries to you and others in the proximities of the unit.
• Not taking these instructions into account could lead to unit
damage.
In the text following the caution symbol you can
also find information on safe procedures during unit
installation.
NOTE
• 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
!
DANGER
• DO NOT CONNECT THE POWER SUPPLY TO THE 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.
• The compressor must be stopped before removing the
refrigerant pipes.
• All service valves must be fully closed after pumping down
operation.
• Do not pour water over the 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.
!
CAUTION
• 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
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