(1) Correction factor for pipe length and drop.
In cooling
Single pipe length from the farthest outdoor unit to the farthest indoor unit(m)
Drop
(m)
0
30.0
0
20.0
0
10.0
0
0.98
0.0
1
0.98
-10.0
0
0.972
-20.0
0
In heating
Single pipe length from the farthest outdoor unit to the farthest indoor unit(m)
Drop
(m)
0
30.0
0
20.0
0
0.994
10.0
1.0
0.995
0.0
0
0.995
-10.0
0
-20.0
0
10
20
0
0
0.92
0
0.947
0.92
0.947
0.92
0.947
0.92
0.935
0.912
0
0.93
0.908
0
0
0.910
0
0.935
0.917
0.945
0.923
0.955
0.930
0.955
0.930
0
0.955
0.930
0
0.93
0.908
30
40
0.89
0.872
0.89
0.872
0.89
0.872
0.89
0.872
0.881
0.868
0.875
0.862
0.885
0.878
0.890
0.882
0.895
0.886
0.900
0.890
0.900
0.890
0.900
0.890
0.875
0.862
24
50
60
0.861
0.84
0.861
0.84
0.861
0.84
0.861
0.84
0.855
0.832
0.851
0.83
0.861
0.847
0.864
0.849
0.867
0.852
0.870
0.855
0.870
0.855
0.870
0.855
0.851
0.83
70