RS-20 (R480A)
Is the LOWEST GWP, NON FLAMMABLE Retrofit Replacement for R134A
- RS-20 has a GWP of 291, 80% lower than R134A
- RS-20 is the lowest GWP replacement for R134A
Dear Valued Customer,
We appreciate your interest in our innovative products.
As of January 1, 2018, The U.S. Environmental Protection Agency (EPA) requires buyers of regulated refrigerants containing CFCs, HFCs or HFOs to be certified technicians or registered wholesalers.
TECHNICIAN
If you’re a technician, you will be asked to complete a short form and upload your
license to complete your order in the cart.
WHOLESALER
If you’re a wholesaler, you’ll need to complete an application and upload a sales and use tax resale certificate. Once you’ve been approved (usually within two business days), you will be entitled to buy our products at wholesale prices.
Thank you!
Comstar International Inc.
Refrigerant Purchase Certification Form
ComStar International Inc.’s RS-20, with the ASHRAE designation of R480A, is new to the U.S. market. RS-20 (R480A) is the lowest GWP at 291 retrofit refrigerant to replace R134A in EXISTING in-place R134A systems.
RS-20 (R480A)
TYPE AND DESCRIPTION
RS-20 is a non-flammable blend of CO2, HFO1234ze & HFC227ea which has a zero ODP and a much lower GWP than R134A. RS-20 is also compatible with the synthetic lubricants commonly used with R134A.
APPLICATIONS
RS-20 can be used in all main applications where R134A is present such as automotive, commercial & industrial AC systems, refrigerated transport, chillers, retail display cases and wine cellar cooling. RS-20 is not recommended for use systems with flooded evaporators. RS-20 is an excellent performance match for R134A providing a similar performance in almost every respect.
SERVICE WORK
Because it is a blend, it is recommended that RS-20 be charged into systems in liquid form as opposed to the Gaseous phase.
MATERIALS COMPATIBILITY
RS-20 is compatible with all materials used in refrigeration systems previously charged with R134A.
ENVIRONMENTAL DATA
None of the components of RS-20 contains chlorine so that it has no ability to deplete the ozone layer. RS-20 has a GWP of 291 which is 80% less that R134A.
Make the Switch
Choosing RS-20 isn't just a technical decision - it's a forward-thinking choice for both your business and the environment. Make the eco-friendly, business-intelligent switch today.
Ensure all necessary equipment is available, such as a recovery unit and cylinders, a container for recovered lubricant and a vacuum pump.
Record baseline data (for non MAC systems) to establish the normal operating conditions for the equipment.
Recover and weigh the R134A charge to determine amount of RS-20 to add.
RS-20 is compatible with POE and PAG oils, so that there is no need to change the lubricant in the system.
Replace the old filter/drier with a new R134A filter/drier.
Evacuate the system and liquid charge with RS-20. A similar weight of RS-20 will be required to replace the original R134A charge. Avoid overcharging the system.
Start the system and check baseline data.
To determine evaporator superheat, measure suction line temperature and pressure near the evaporator outlet. Use a pressure/temperature chart to find the dew point at the measured pressure. Subtract this dew point from the actual temperature to get superheat. If a sight-glass is installed, ensure no liquid is present.
To determine condenser sub-cooling, measure the liquid line’s temperature and pressure near the condenser outlet. Use a pressure/temperature chart to find the bubble point at the measured pressure. Subtract the measured temperature from this value to get sub-cooling. If a sight-glass is installed, ensure few or no bubbles are visible.
Check system thoroughly for leaks.
Carefully monitor the oil level in the compressor if a sight glass is present & add more oil if required to maintain the correct level.
Remove all R134A labels and clearly label systems as being charged with RS-20.
