Simultaneous extension of
height difference and equivalent length

Design flexibility is further improved by simultaneous extension of height difference, improved from 90 m to 110 m, and equivalent length (up to 190 m).

  • Height difference extension
    Max. 110 m

    For height differences exceeding 50 m with the outdoor unit above the indoor unit and 40 m with the outdoor unit below, the main piping liquid piping size must be increased.

    The operating temperature range is up to 49˚C (Outdoor units above indoor units only).
    The minimum connection capacity index of the indoor unit shall be 63 or more (Outdoor units above indoor units only).

  • Equivalent length extension
    Max. 190 m

    When the equivalent piping length from outdoor unit to indoor unit is 90 m or more, be sure to increase the size of the liquid and gas pipes of the main piping.

* In addition to increasing the size of the main pipe, there are other piping restrictions regarding height difference extension and equivalent length. Check the Installation Manual for details.

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