•   •   •   •   •   •   •

Pressure testing on Ezepipe™ Composite pipe
characteristics • installing • hazards • properties • pressure tests
 
Pressure test for radiator installation / DIN 18380

Ezepipe™ composite pipe with press coupling or clamp couplings.
The installer must pressure test the water pipes before these are filled in or covered with cement, plaster or other materials. The heating installation must be put under water pressure and de-aerated (protection against frost will be necessary at freezing temperatures). The heating pipes must undergo a pressure test, a pressure 1.3 times greater than the total pressure of the installation (static pressure), with at least 1 bar overpressure at each point of the installation. Use pressure gauges that can measure a pressure difference of 0.1 bar. Using the pressure gauge should be placed at the lowest point of the installation. The pressure test must take place over 24 hours. The pressure may not drop by more than 0.2 bar and the installation must remain watertight. After the pressure test with cold water, heat the water to the highest temperature allowed in the central heating system and check that the installation remains watertight. When the water has cooled check that the pipes and couplings remain watertight.
Pressure test on floor heating installation / DIN 4725
Ezepipe™ composite pipe with clamp couplings.
Before covering the heating circuit with anhydride or cement bound concrete the water tightness must be checked (water pressure test). The circuits must be put entirely under water pressure and de-aerated. The water pressure must be tested just before and just after the placing of the covering floor. The test pressure must be 1.3 times greater than the operating pressure. We recommend testing Ezepipe™ in floor heating circuits at 6 bar, and this over a period of 24 hours. Please check that the shut off valves for the floor heating distributor are fully closed so that the test pressure remains isolated from the rest of the installation. Place a number of pressure gauges which can measure a pressure difference of 0.1 bar. The pressure may not drop by more than 02. bar and the installation must remain watertight. When using cement, the operating pressure must be brought to the maximum operating pressure. If there is a danger of frost, you must take measures such as using anti-frost products or heating the buildings. If the heating is no longer to be exposed to frost (e.g. if a building is inhabited) the anti-frost product must be completely removed from the piping circuit. The installation must be rinsed through at least three times with clean water because anti-frost products (even concentrated on a large surface area) can cause corrosion of the metal parts of the underfloor heating system.

Pressure test for sanitary installations / DIN 1988

Ezepipe™ composite pipe with press coupling or clamp couplings
Place a number of pressure gauges which can measure a pressure difference of 0.1 bar. The pressure gauge must be fitted at the lowest point of the installation. The installation is not filled in. The pipes are filled with filtered water without air. Two tests are conducted, and introductory test and a main test.

The introductory test
The pressure test takes place at the maximum permitted working pressure of 10 bar, with 5 bar extra, increasing to pressure of 15 bar. The installation must be put under this pressure twice for 30 minutes with an interval of 10 minutes.

Then follows another 30 minute test in which the pressure may not drop by more than 0.3 bar (0.1 bar per 10 minutes) and the installation must remain watertight.

The main test
After the introductory test, the main test must immediately take place. This test must last for 24 hours, and the pressure measured with the introductory test may not have dropped by more than 0.2 bar after 24 hours. The installation must remain fully watertight.
 
• © ezepipe pty ltd 2008 • (t) +61 7 55 40 77 05 • (f) +61 7 55 40 77 06 • Queensland, Australia •
Site by CSV Web • info@csvweb.com.au