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R410A Handling, Properties, Design, Installation and Servicing (Guidance note 12)
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R410A Handling, Properties, Design, Installation and Servicing (Guidance note 12)
R410A Handling, Properties, Design, Installation and Servicing (GUIDANCE NOTE 12)
R410A is now a recognised refrigerant for air conditioning and comfort heating heat pumps in Europe. Many major Original Equipment Manufacturers (OEMs) in this application field, represented in the EU, now supply systems using R410A. R410A is a near azeotropic mixture consisting of two HFC components, R32 and R125 in the proportions 50%/50% by weight. R410A has much higher pressures than R22. System condensing pressures will be 9 to 10 bar higher than with R22. System performance will be similar to R22. To gain the full benefits of R410A the system should be designed to take full advantage of its better heat transfer properties. Servicing with R410A should be straightforward provided the guidelines given below are followed. Systems which use R410A normally have compressors charged with a polyolester (POE) lubricant. There are many manufacturers and grades of POE lubricant. It is therefore very important that any oil added to a system is of the correct grade. Consult the system or compressor manufacturer for guidance on which specific oil to use...
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