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Oil trap for 2 ton split unit

2 TON SPLT UNIT MITSUBISHI MODEL NO MU24AV
THAILAND /
Building hight is about 16 meters, condensing unit at roof,
in installation manual hight is 15 metes with 30 meters pipe run and pipe size is 5/8", and it is not mention that there will be any oil retrun problem
1.Do we need to fix a p oil trap at riser or no need?
2. Do we need to change suction line size or keep same size?
3 if same size of piping and with out oil trap will system works without any problem?

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After installing the system would I advice to measure pressures. By the lenght of pipes and hight difference of the units will there be a pressure drop. Be aware if more pipe lenght as the original is used, oil should be added to the system (oil is sticking in the pipes, the more lenght and traps, the more oil will be in the pipes instead of in the compressor).

Posted on Jul 26, 2008

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Pipe size is okay, not that I know any better than the manufacturer, but I would recommend at least two and possibly even three oil traps in the vapor line on the way back up.

Posted on Jun 15, 2008

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