UM / UM PLUS
Chillers and inverter air / water heat pumps with axial fans
32
WATER CHILLER/HEAT PUMP MODE
SANITARY HOT WATER MODE
18
CORRECTION FACTORS FOR USE OF GLYCOL
Glycol rate Freezing point (°C)
CCF
IPCF
WFCF PDCF
10
%
-3,2
0,985
1
1,02
1,08
20
%
-7,8
0,98
0,99
1,05
1,12
30
%
-14,1
0,97
0,98
1,10
1,22
40
%
-22,3
0,965
0,97
1,14
1,25
50
%
-33,8
0,955
0,965
1,2
1,33
CCF:
Capacity correction factor
IPCF: Input power correction factor
WFCF: Water flow rate correction factor
PDCF: Pressure drops correction factor
The water flow rate and pressure drop correction factors are to be applied directly to the values given for operation without
glycol. The water flow rate correction factor is calculated in order to get the same temperature’s difference that would be
obtained without glycol. The pressure drops’ correction factor takes into account the different water flow rate obtained from the
application of the water flow rate correction factor.
