Quote:
Originally Posted by hotwire
Most of the literature that I've come across says that you need more than one indoor unit connected to the outdoor multi-split unit to avoid equipment damage. If there is only one unit connected you run the chance of liquid refrigerant coming back to the compressor.
Hope this helps,
Kenny
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I think you are right sir.. The size of pre-load of refrigerant in outdoor unit
of the single zone units limits you to a certain max-min line-set length.
I was warned not to cut my lineset too short, or some of the R410a would
have to be removed from the system.
So, I just coiled up my extra lineset behind the outdoor unit.
It's just a guess, but I'll bet a multi-zone system has fixed pre-load
that gives you a max-min length
total for your linesets.
Or if you go extra long, they expect the installer will have a tank of
R410a and the know-how to read the manual/calculate how much
R410a is needed..