Technical data

APPENDIX
6 720 803 687 (2012/11) 89
13.6 ALTERNATIVE PIPE WORK LENGTHS AND T
Additional pipe length
[m]
Maximum flow
rate [l/min]
Heating
output [kW] T [K]
Residual
pressure
[mbar]
20 15.3 21.86 20 200
10 16.3 23.29 20 200
6 16.8 24.00 20 200
0 17.6 25.14 20 200
20 15.3 23.96 21.5 200
10 16.3 25.03 21.5 200
6 16.8 25.80 21.5 200
0 17.6 27.03 21.5 200
Table 50 : Alternative
 T between the heating system flow and
return based on additional pipe length
Heating
output [kW]
Additional pipe
length [m]
Maximum flow
rate [l/min]
T [K]
28
20 15.3
25.62
30 27.45
28
10 16.3
24.05
30 25.77
28
6 16.8
23.33
30 25.00
28
0 17.6
22.27
30 23.86
Table 51 : Alternative  T between the heating system
flow and return based on heating output
The maximum length of refrigerant pipework must be
maximum 30m each way and therefore must be taken
into account when extending CH system pipework.