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.