For the application in piping systems for hot water distribution for floor heating at a design pressure (= maximum operating pressure) of 6 bar (7 bar absolute or 6 bar overpressure), or 4 bar (5 bar absolute or 4 bar overpressure) under the conditions mentioned in table 1.
Table 1 – Temperature profile during 50 years
| Temperature [ ºC] | Time | Overall service coëfficiënt | |
| Tcold | 20 | 0,5 years | 1,25 |
| Tdesign | 30+40 | 20 years+25 years | 1,5 |
| Tmax | 50 | 4,5 years | 1,3 |
| T malfunction | 65+80 | 100 hours +10 hours | 1,0 |
| Remark: the mentioned temperature profile is in accordance with class 3 of NEN-ISO 10508. |
Installers/plumbers, architects, contractors, municipalities, housing association