Eliwell EWPlus 902 Handbuch Seite 8

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FLAMMABLE REFRIGERANT GASES
The use of flammable refrigerant gases depends on many factors, including current local, regional and/or national
standards.
The devices and corresponding accessories described in this document use components and, more specifically,
electromechanical relays tested in accordance with IEC standard 60079-15 and classed as nC components (non-
incendive electrical devices with protection 'n').
Compliance with IEC standard 60079-15 is considered sufficient - and therefore ideal - for commercial
refrigeration and HVAC systems which use flammable refrigerant gases, such as R290. Nevertheless, other
limitations, devices, sites and/or machine types (refrigerators, vending machines and dispensers, bottle coolers,
ice machines, chiller cabinets for self-service, etc.) may be involved or lead to restrictions and/or other constraints.
The use and application of information contained in this document requires experience in the design and
parameter setup/programming of refrigeration and HVAC control systems. Only you, namely the original
manufacturers of the machine, the installers, or the users, can be aware of the conditions and factors present, in
addition to applicable standards during machine design, installation, setup, operation and maintenance (or related
processes). As such, only you can decide the suitability of the automation and the corresponding equipment, and
the resulting safety features and interlocks which can be utilized in an efficient and suitable manner at the sites in
which the relevant equipment needs to be put into service. When the automation and control equipment - and any
other related equipment or software - are selected for a particular application, the applicable local, regional and
national standards and regulations must also be taken into consideration.
When using flammable refrigerant gases, machine compliance with all current regulations and standards must
be checked after this controller and related equipment has been installed. Although all the declarations and
information contained herein should be considered accurate and reliable, they are not covered by warranty. The
information provided herein does not absolve the user from the responsibility of carrying out their own checks and
verification processes in terms of any applicable standards.
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