Hisense AVWT-408FHFSHA Installation Manual page 22

(4) Place the outdoor unit pipe horizontally or with down gradient toward indoor unit side, or refrigerant oil may accumulate in the
pipe.
Indoor Unit Side
(5) For servicing, in case that the pipe is placed frontward of the outdoor unit, secure Min.19-11/16in.(500mm) between the
outdoor unit and the Manifold Pipe. When the compressor is replaced, a space of Min.19-11/16in.(500mm) is required.
Min. 19-11/16in.(500mm)
(6) Direction of Manifold Pipe
Place the Manifold Pipe horizontally toward the ground (within±15°) as shown in the figure.
Indoor Unit Side
Refrigerant oil accumulates in the pipe
Outdoor Unit Outdoor Unit
Manifold pipe
Not more than 15 °
14
Outdoor Unit
Manifold pipe