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The X11 should be R22. Can you give me complete model ?
There should be a model like TWRA036d or similar on the unit
The XR11 series were R22 units. However Trane was producing R410A units at the time.The XR11is a series, not a model.I would like to have the complete model so I can verify and provide documentation.You also can look on label on outdoor unit and in nomenclature it will specify type of refrigerant and amount of refrigerant.