SAFETY
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 AND DHW CIRCUITS
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.
•
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.
•
Do not let any foreign body into the water inlet and outlet piping of the
air to water heat pump.
2.3 IMPORTANT NOTICE
•
The supplementary information about the purchased
products is supplied in a CD-ROM, which can be found
bundled with the indoor 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 TO WORK ON
THE INSTALLATION OF THE AIR TO WATER HEAT PUMP
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 to water heat pump system.
•
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.
•
Hitachi pursues a policy of continuous improvement in
product design and performance. The right is therefore
reserved to vary specifications without notice.
•
Hitachi cannot anticipate every possible circumstance that
might involve a potential hazard.
•
This air to water heat pump has been designed for standard
water heating for human beings only. Do not use this for
2
PMML0573 rev.1 - 07/2021
other purposes such as for drying clothes, heating foods or
for any other heating process (except swimming pool).
•
No part of this manual may be reproduced without written
permission.
•
If you have any questions, contact your service contractor of
Hitachi.
•
Check and make sure that the explanations of each part
of this manual correspond to your air to water heat pump
model.
•
Refer to the models codification to confirm the main
characteristics of your system.
•
Signal words (NOTE, DANGER and CAUTION) are used
to identify levels of hazard seriousness. Definitions for
identifying hazard levels are provided in initial pages of this
document.
•
The operation modes of these units are controlled by the unit
controller.
•
This manual should be considered as a permanent part of
the air to water heat pump. It gives a common description
of and information for this air to water heat pump which you
operate as well as for other models.
•
Keep the water temperature of the system above the
freezing temperature.
!
D A N G E R
Do not use means to accelerate the defrosting process
or to clean, other than those recommended by the
manufacturer.
•
The appliance shall be stored in a room without continuously
operating ignition sources (for example: open flames, an
operating gas appliance or an operating electric heater).
•
Do not pierce or burn.
•
Be aware that refrigerants may not contain an odour.