4
1 - INTRODUCTION
The 30XAV-ZE Aquaforce units are designed to cool water
for the air conditioning of buildings and industrial processes.
Prior to the initial start-up of the 30XAV-ZE units, the
people involved in the on-site installation, start-up,
operation, and maintenance of this unit should be
thoroughly familiar with these instructions and the specific
project data for the installation site.
The 30XAV-ZE liquid chillers are designed to provide a
very high level of safety during installation, start-up,
operation and maintenance. They will provide safe and
reliable service if used within their application range.
They are designed for an operating life of 15 years by
assuming a 75% utilisation factor; that is approximately
100,000 operating hours.
This manual provides the necessary information to
familiarize yourself with the control system before
performing start-up procedures. The procedures in this
manual are arranged in the sequence required for machine
installation, start-up, operation and maintenance.
Always ensure that all required safety measures are followed,
including those in this document, such as: wearing protective
clothing (gloves, safety glasses and shoes) using appropriate
tools, employing qualified and skilled technicians
(electricians, refrigeration engineers) fully trained in the use
of flammable refrigerants and following local regulations (see
annexe E in EN 378-4-Guidelines for repairs of equipment
using flammable refrigerants).
To find out, if these products comply with European
directives (machine safety, low voltage, electromagnetic
compatibility, equipment under pressure etc.) check the
declarations of conformity for these products.
IMPORTANT INFORMATION REGARDING THE
REFRIGERANT USED:
This product contains fluorinated greenhouse gas covered
by the Kyoto protocol (1997) and subject to reporting
obligations of substances listed in Annex II of European
F-gas regulation N° 517/2014
• Refrigerant type: R1234ze(E)
• Global Warming Potential GWP: 1
This refrigerant is classified group 2 “non-dangerous”
according to the critera of Pressure Equipment Directive
(PED) both 97/23/CE and 2014/68/CE. According to
ISO-819, R1234ze(E) is classified in safety group A2L:
Lower flammability. One of the characteristic of this
refrigerant is the absence of flammable mixture with air
under 21°C of ambiance and controlled humidity conditions.
However when humidity or temperature goes up, this
refrigerant can become flammable and can represent a
potential danger if flammability risks are not properly
mitigated within the machine room installation.
Local building codes and safety standards shall be
followed. In absence of local codes and standards, please
refer to EN-378 (2012) (Safety requirements for
substances classified A2) or to ISO-5149 (2014) (for
substances classified A2L) as a guide.
Customer shall obtain approval from the local building
authorities. Carrier also provides additional guidelines
for the safe use of R1234ze(E) refrigerant that should be
added to the requirements of safety standards and
building codes to insure that the risks are minimised to
acceptable levels.
Refer to paragraph 2 “additional guidelines for safe use of
R1234ze(E) refrigerant in machinery rooms” For further
details on physical properties, flammability & toxicity
characteristics, hazards Identification, installation safety
requirements, etc, refer to standards such as:
•
ASHRAE 34, EN-378, ISO-817 and ISO-5149
•
Safety Data Sheet (SDS) supplied b y the refrigerant
manufacturer
•
European union’s REACH database (Registration,
Evaluation, Authorisation and Restriction of
Chemicals)
1.1 -
Installation safety considerations
The 30XAV-ZE liquid chillers are classified as “indirect heat
exchange system” and are designated to be installed in a
special location (Class C as per ISO-5149 and EN-378)
where only authorized personnel have access, who are
acquainted with general and special safety precautions of
the establishment and are qualified and trained in
monitoring and maintenance. The access limitation device
must be installed by the customer.
The chiller(s) should be located at least 20 ft (6 m) from the
nearest entrance to the building and should be in an area
with free airflow.
The refrigerant R-1234ze(E) falls into refrigerant safety
group A2L in accordance to ISO-5149 and A2 in accordance
to EN-378. No Charge limitations apply for the level of
occupancy is ‘C’. Please refer to these standards for further
details. This level needs to be confirmed by the customer.
After the unit has been received, when it is ready to be
installed or reinstalled, and before it is started up, it must
be inspected for damage. Check that the refrigerant
circuit(s) is (are) intact, especially that no components or
pipes have shifted (e.g. following a shock). If in doubt,
carry out a leak tightness check and verify with the
manufacturer that the circuit integrity has not been
impaired. If damage is detected upon receipt, immediately
file a claim with the shipping company.
Carrier strongly recommends employing a specialised
company to unload the machine.
It is compulsory to wear personal protection equipment.
Do not remove the skid or the packaging until the unit is
in its final position. These units can be moved with a fork
lift truck, as long as the forks are positioned in the right
place and direction on the unit.
