IEC TS 63542 ED2

Refrigerant detection systems for flammable refrigerants

Scope

IEC TS 63542:2026 applies to refrigerant detection systems for use in appliances complying with a relevant standard of the IEC 60335 series using flammable refrigerants .
Relevant standards of the IEC 60335-series include:
– IEC 60335-2-40 , Household and similar electrical appliances - Safety - Part 2-40: Particular requirements for electrical heat pumps, air-conditioners and dehumidifiers
– IEC 60335-2-104, Household and similar electrical appliances - Safety - Part 2-104: Particular requirements for appliances to recover and/or recycle refrigerant from air conditioning and refrigeration equipment
This document does not take into account refrigerants other than group A2L, A2 and A3 as defined by ISO 817.
This second edition cancels and replaces the first edition published in 2024. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
– Clause 4 - revised general requirements;
– Clause 5 - revised test gases and default test conditions;
– Clause 7 - revised response time of the refrigerant detection system ;
– Clause 8 - revised refrigerant detection system calibration and short-term stability;
– Clause 9 - revised selectivity test and poisoning test;
– Clause 10 - revised high concentration test,
– Clause 11 - revised drift test;
– Clause 12 - revised humidity test;
– Clause 13 - revised temperature test;
– Clause 14 - revised pressure test;
– Clause 15 - revised vibration requirements;
– Clause 16 - revised EMC immunity test;
– Clause 17 - revised ignition test;
– Clause 18 - Revised refrigerant detection system self test routine;
– Clause 19 - revised hardware and software design requirements for refrigerant sensors and refrigerant detection systems;
– Clause 20 - revised refrigerant sensor identification;
– Annex A - Revised routine tests;
– Annex B - Revised contamination test(cooking by-products);
– Annex C - Revised dust test;
– Annex D - added poisoning test for multiple refrigerant gasses.