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1 - INTRODUCTION
The 30XW-VZE / 30XWHVZE units are designed to cool or heat
water (or brine) for the air conditioning of buildings and industrial
processes.
Prior to the initial start-up of the 30XW-VZE / 30XWHVZE 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 (Machine room, etc).
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.
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.
Greyed text does not apply to units equipped with option 330 (Low GWP A1 R-515B refrigerant)
4
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 by the refrigerant
manufacturer
- European union's REACH database (Registration, Evaluation,
Authorisation and Restriction of Chemicals)
1.1 - Installation safety considerations
The 30XW-VZE / 30XWHVZE liquid chillers are classified as
"indirect heat exchange system" and are designated to be installed
in a special machinery room (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 (e.g. cut-off, enclosure).
The refrigerant R1234ze(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.
The units can also be lifted with slings, using only the designated
lifting points marked on the unit.
Use slings or lifting beams with the correct capacity, and always
follow the lifting instructions on the certified drawings supplied with
the unit. Do not tilt the unit more than 15°.
Safety is only guaranteed, if these instructions are carefully
followed. If this is not the case, there is a risk of material
deterioration and injuries to personnel.
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