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5
ENG
Heos BOX R704
+0300140EN - rel. 1.0 - 25.05.2022
1. WARNINGS
1.1 General warnings
This document is the set of original instructions written in Italian; all other
languages have been professionally translated. For the intended meaning
reference must always be made to the original Italian version.
The HEOS BOX units are water-cooled condensing units for indoor
use, intended for medium (MT) and low temperature (LT) commercial
refrigeration applications. HEOS BOX is a partly-completed machine and
as such must be appropriately connected to an evaporating system in
order to function correctly. HEOS BOX and the evaporating unit together
comprise the complete equipment. Carefully read this booklet and all
documentation supplied with the unit. This documentation must be kept
by the customer (manufacturer, designer, installer or owner of the final
equipment) for any future maintenance or service. The warranty will be
void if the instructions described under “Warnings” are not complied with.
The operation of HEOS BOX is specified in the technical
documentation supplied with the product or can be
downloaded, even prior to purchase, from the website
www.carel.com.
Every product supplied by CAREL Industries, in relation to its advanced
level of technology, requires setup/configuration/programming to be
able to operate in the best possible way for the specific application. Failure
to complete such operations, which are required/indicated in the user
manual, may cause the final product to malfunction; CAREL Industries
accepts no liability in such cases. The customer (manufacturer, developer,
installer or owner of the final equipment) accepts all liability and risk
relating to the configuration of the product in order to reach the expected
results in relation to the specific final installation and/or equipment. CAREL
Industries may, based on specific agreements, act as a consultant for the
installation/commissioning/use of the unit, however in no case does it
accept liability for the correct operation of the unit and the overall system
if the warnings or suggestions provided in this manual or in other product
technical documents are not heeded. In particular, as well as observing
the above warnings and suggestions, the following warnings must be
observed for correct use of the product:
ELECTRIC SHOCK HAZARD
The unit contains live electrical components. Disconnect the mains
power supply before accessing inside parts or during maintenance and
installation. It is forbidden to remove the access panels to the internal
parts of the unit without first having placed disconnect switch QS1 and
the switch or disconnect device on the HEOS BOX power supply line in the
OFF position (see the wiring diagram). The mains power disconnect device
must have a contact opening distance that allows complete disconnection
in overvoltage category III conditions; it must also be incorporated into the
HEOS BOX power supply line in accordance with national regulations.
WATER LEAK HAZARD
The unit comprises components containing water or water with antifreeze
additive (generally glycol). Malfunctions in the unit’s connections or to its
operation may cause fluid leakages. Avoid direct contact of the fluid with
the eyes/skin and, in the event of accidental contact or inhalation, seek
medical advice.
PRESSURE EQUIPMENT HAZARD
The unit is supplied sealed with an inert gas (nitrogen) pre-charge of
around 1 bar (14.5 psi) above atmospheric pressure. Take all necessary
precautions to avoid material from being expelled outside of the unit
when venting the gas. Before charging the unit with R744 refrigerant, make
sure that all the activities described in the “Introduction”, “Handling” and
“Installation” chapters have been completed, including connection of the
high pressure safety valve discharge to suitable piping, so as to discharge
excess pressure safely away from the equipment. Carefully verify the PS
and TS after having incorporated the HEOS BOX into the evaporating
system, considering all the components of the refrigerant circuit (for the
refrigerant circuit contained inside HEOS BOX, refer to the values shown
on the unit’s label and reported in this manual). Always wear protective
glasses when performing any work on the unit.
BURN HAZARD
The unit contains components that may reach high temperatures. Take all
necessary protective measures before performing any operations on the
unit.
WARNINGS
• HEOS BOX product is a component that can be integrated into various
different applications. HEOS BOX installation requires the installer to
ensure suitable protection against direct contact with hazardous high
voltage parts. Under no circumstances should any live parts be accessed.
• The installation of the product must include a compliant earth
connection, using the yellow-green terminal provided inside the
electrical panel.
• Environmental and power supply conditions must conform to the
values specified on the product rating labels.
• Handling, installation, use and maintenance must be performed by
qualified personnel who have the qualifications and authorisations
required by local regulations, using appropriate personal protective
equipment (PPE), who are aware of the necessary precautions and who
are able to correctly and safely complete all required operations.
• All operations on the product must be carried out according to the
instructions provided in this manual and on the labels applied to the
product. Any uses or modifications that are not authorised by the
manufacturer are considered improper. CAREL Industries S.p.A. declines
all liability for any such unauthorised use.
• Keep all ventilation openings on the equipment’s enclosure or on the
structure for built-in installation clear of obstructions;
• Do not damage the refrigerant circuit
• Do not attempt to open the unit in any way other than described in
the manual.
• Observe the standards in force in the place where the unit is installed.
• Keep the unit out of the reach of children and animals. The unit must be
operated/serviced/cleaned by qualified adult personnel. The operations
described above are therefore prohibited to minors or people with
reduced psychophysical abilities.
• Do not install and use the product near objects that may be damaged
when in contact with water (or condensate). CAREL Industries S.p.A.
declines all liability for direct or indirect damage following water leaks
from the unit.
• Do not use corrosive chemicals, solvents or aggressive detergents
to clean the inside and outside parts of the unit, unless specifically
indicated in the user manual.
• Do not drop, hit or shake the unit, as the inside parts and the linings may
be irreparably damaged.
• If the unit is delivered arranged in a way other than that required for
installation (upside down or on one side), wait at least 24 hours before
starting it the first time.