DuPont™ ISCEON® 39TC® is an easy-to-use, non-ozone-depleting HFC retrofit refrigerant for R-12 in centrifugal chillers.

» ISCEON® 39TC® Case Histories

ASHRAE #

R-423A

Replaces

R-12

Applications

Centrifugal chillers designed for R-12

Benefits

•  Provides easy, quick, cost-effective retrofits
• Non-ozone-depleting HFC
• Retrofit typically requires a single lubricant change to polyol ester without additional flushing
• Avoids expensive engineering changes to existing chiller equipment
• Enables cost-effective, continued use of existing chiller equipment
• Can be topped off during service without removing entire refrigerant charge

Performance

• Provides required cooling capacity and comparable energy efficiency vs. R-12
• Similar discharge temperature and pressure vs. R-12

Lubricant Recommendation

For most systems, only one lubricant change to polyol ester during retrofit is required. ISCEON® 39TC® tolerates high residual levels of mineral oil in polyol ester; therefore, no system flushing is generally required after changing the original lubricant to polyol ester. See ISCEON® 39TC® Retrofit Guidelines for more details.

Additional Information

• DuPont™ ISCEON® 9 Series Refrigerants Product Information Guide