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28-11-2016, 05:41 PM #1
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Lennox Unit Additional Charge R410a
Does anybody know how many grams per meter is required for a Lennox unit? System model is TPA04854N41T this unit is factory charged to 15feet which is 4.5meters at 5.299kg and my liquid line pipe run is 17 meters on 3/8. Cheers
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28-11-2016, 06:36 PM #2
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Re: Lennox Unit Additional Charge R410a
Lennox tech document here might help, table 6 gives data but you need to check your pipe lossess.
https://www.google.co.uk/url?sa=t&so...mjyFMw7QVFnb8g
Lennox manuals for the TPA also relate correct charge to subcooling so check your unit manual, if you haven't got one try Lennox or Google.Last edited by Brian_UK; 28-11-2016 at 06:53 PM.
Brian - Newton Abbot, Devon, UK
Retired March 2015
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05-12-2016, 10:39 AM #3
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Re: Lennox Unit Additional Charge R410a
Cheers mate.
