Permissible Pipeline Lengths - Kerbl C 10 Mode D'emploi

12. We recommend installing a flow meter (item 5) at the beginning and at the end of the ring pipe network in order to monitor the function of
the C10 circulation pump. The return temperature can be monitored by integrating a thermometer (item 6).
Important!
According to Drinking Water Ordinance 2001 (TrinkwV 2001), a permissible safety device with free outlet according to DIN 1988, DIN EN 1717
(type AA, AB or AD) must be installed on site.

6.7 Permissible pipeline lengths

The maximum permissible length of the ring pipe with 3/4" pipes or pipes with at least a 20 mm inner diameter
250
200
150
100
50
0
1 2 3
Max. number of water bowls per ring pipe (closed ring pipe per circulation heater)
Maximum permissible length of the ring pipe with 1/2" pipes or pipes with at least a 15 mm inner diameter
140
120
100
80
60
40
20
0
1 2 3
Max. number of water bowls per ring pipe (closed ring pipe per circulation heater)
4 5 6 7 8 9
4 5 6 7 8 9 10
10 11 12 13 14 15 16
11 12
39
17 18 19 20