Specifications
 Page 60 
8.  Capacity Correction Factor for Height Difference
8.1  Heat pump models
Model 18K Pipe Length (m)
Cooling 5 10 20 30
Height difference 
H (m)
Indoor Upper  
than Outdoor
20  0.928   0.912 
10  0.969   0.937   0.921 
5  0.995   0.979   0.946   0.930 
0  1.000   0.984   0.951   0.935 
Outdoor Upper  
than Indoor
-5  1.000   0.984   0.951   0.935 
-10  0.984   0.951   0.935 
-20  0.951   0.935 
Heating 5 10 20 30
Height difference 
H (m)
Indoor Upper  
than Outdoor
20  0.982   0.976 
10  0.994   0.982   0.976 
5  1.000   0.994   0.982   0.976 
0  1.000   0.994   0.982   0.976 
Outdoor Upper  
than Indoor
-5  0.992   0.986   0.974   0.968 
-10  0.978   0.966   0.960 
-20  0.959   0.953