The execution of the interconnection pipes and refrigerant charge are the responsibility of the authorized installer.
Make sure that the brazing procedures are suitable for the lines and that nitrogen is used during the process to prevent chips from entering the pipes and also the formation of copper oxide.
When draining the condensation unit's suction piping, wrap it with a wet cloth on the inner side of the unit in order to protect its insulation. After brazing, complete the isolation of the suction line inside the unit.
If there is a difference of more than 3m between the units and the evaporator unit is at a lower level, a siphon must be installed in the suction line for every 3m of difference in level, to return oil to the compressor.
In installations where the evaporator unit and the condenser unit are at the same level or the evaporator unit is at a higher level, install a trap at least up to the top of the evaporator.
