Condensing Unit Above Evaporator

[Mohammed Qasim]

I have to install a free stand split type air conditioner of 48000 BTU/hr and 24000 BTU/hr cassette type in a building where the condensing unit will be
above the evaporator more than 6 m also there will be a
horizontal distance of about 2-3 m out of the evaporator before the pipe go upward to the condensing unit ( Notice : The manufacturer did not say anything
about similar case ) so please advise me with the following :
1- Should I make an oil trap ( at which distance and will it be on the suction or the liquid pipe or both)?.
2- How can I keep the capacity of the unit as high as possible due to this distance?

Thanks

[brianubaldo]

no matter if the condenser is above the evaporator..

you should take note only in the ff;

-total line set distance
-total rise
-total drop

NOTE: a rise followed by a drop cannot be followed by another rise..

so as a drop followed by a rise cannot be followed by another drop..

its a genral rule to prevent oil migration!

[Mohammed Qasim]

Sorry I forgot to say that the cassette units metering devices are capillary tubes ,but I am not sure about the free stand units I will check it later .