The document discusses updates to the IEC 60335-2-89 standard regarding new charge limits for flammable refrigerants in commercial refrigeration. It outlines: - A new maximum refrigerant charge limit of 13 times the lower flammability limit or 1.2kg, whichever is lower, for each refrigeration circuit. Requirements for systems below 150g are unchanged. - Additional safety requirements for appliances over 150g, including hermetically sealed circuits, vibration protection, room size markings, and cabinet leakage testing. - Applications like ice makers and multi-deck cabinets that could benefit from the higher charge limits. - The timeline of adopting the new IEC standard at international,

2. New IEC Charge Limit For Flammables
In Commercial Refrigeration
Marek Zgliczynski
IEC SC61C Chair

3. Nov
2014
TOKYO
WG4
Creation
July
2015
VIENNA
Sept
2015
FRANKFURT
Oct
2015
WELLINGTON
Jan
2016
LONDON
Apr
2016
BERLIN
Oct
2016
FRANKFURT
Nov
2016
DUBLIN
Apr
2017
TURIN
June
2017
STRATFORD
UPON AVON
Aug
2017
FRANKFURT
Oct
2017
VLADIVOSTOK
Oct
2018
BUSAN
CDV
Time scale for including the Working Group
WG4 proposal into the IEC 60335-2-89:
FRANKFURT
Jul
2018
FDIS
Voted
April 2019WG Task: The risk with more than 150g
flammable refrigerant must be the same
as we have with the current limit of 150 g

4. Voting Result:

5. New IEC Charge
Limit For Flammables
• Max refrigerant charge for each circuit 13*LFL, but not more than 1.2kg
• Requirements for systems below 150 g are not changing
• Remote Systems with more then 150 g of flammables are excluded from the scope
of this new edition
• Commercial Ice Makers are now part of the standard scope
Refrigerant LFL [kg/m3] 13*LFL IEC Approved
R290 0.038 0.494 kg 0.494 kg
R32 0.308 4.004 kg 1.2 kg

6. Main new requirements above 150g of charge:
• Refrigeration circuit has to be hermetically sealed
• Refrigerant-containing parts shall be protected and not be an accessible part
• Appliance shall be constructed to not cause excessive vibration or resonance
• Appliance shall be marked with the minimum room floor area in which the
appliance is permitted to be installed (With some exceptions)
New IEC Charge
Limit For Flammables

7. New IEC Charge
Limit For Flammables
• Appliance shall be constructed to pass the Annex CC
test to prevent flammable refrigerant concentration
• Testing includes doors/drawers opening test
after full charge release inside closed cabinet.
Main new requirements above 150g of charge:
• Air-flow is the main factor to minimize the risk of
flammable cloud around the appliance

8. Applications To Benefit
Higher Charge Limit
ICE
MAKERS
RECH-IN
CABINETS
SERVE-OVER
CABINETS
MULTI-DECK
CABINETS
GELATO
COUNTERS
BLAST
FREEZERS
GONDOLA
CABINETS
GLASS DOOR
MERCHANDISER

9. PRODUCT
STANDARD
GENERAL
STANDARD
International and
Regional
COMMITTEES
& STANDARDS
TC 86 SC1
ISO 5149
TC61 SC61C
IEC 60335-2-24
IEC 60335-2-89
TC61 SC61D
IEC 60335-2-40
INTERNATIONAL
LEVEL
TC182WG6
EN378
CLC61
EN 60335-2-24
EN 60335-2-89
EN 60335-2-40
EUROPEAN
LEVEL
SSPC 15
ASHRAE 15
STP’s
UL250
UL60335-2-24
UL471
UL60335-2-89
UL474, UL484
UL60335-2-40
UNITED STATES
LEVEL
JAPAN LEVEL
High Pressure Act
Electrical Safety Act
C 9335-2-24
C 9335-2-89
C 9335-2-40
What’s Next?

10. Conclusions:
• Once the new edition of the standard is published, it has to be adopted by country/region
legislation
• CANENA in the coming months will begin developing a new standard for US and Canada based
on approved IEC standard with some modification based on NFPA and AHRI studies
• In Europe, Ed.3 of IEC standard 60335-2-89 is going to become EN60335-2-89 not earlier then
2020
• Publication of the New Edition of IEC 60335-2-89 is expected still in 2019
• Once the new edition of the UL product standard is released, general standard ASHRAE 15 has to
be updated, timing of such a step is unpredictable

11. NFPA & AHRTI Project 9013 Results