Items tagged with HEATING Files

File size: 59.15 KB Download

Floor heating systems: Acceptance test (NT VVS 119)

NT VVS 119

  • The aim of this method is to provide a simple test for documenting that, on completion of the installation, a hot water floor heating system fulfils design specifications for heating requirements. In addition, the method also requires the installer to provide full documentation of the floor heating installation.

File size: 256.33 KB Download

Refrigeration and heat pump equipment: General conditions for field testing and presentation of performance (NT VVS 115)

NT VVS 115

  • This Nordtest method provides the general conditions as well as references to specific methods to be applied in field testing and presentation of performance for heat pumps and refrigeration equipment.

File size: 3.05 MB Download

Round Robin test on heat exchanger or district heating (NT TR 532)

NT TR 532

  • Four partners from three Nordic countries carried out for the first time a Round Robin test on a heat exchanger designed for district heating applications. The aim was to investigate the level of uncertainty achieved in determining the thermal capacity and pressure losses in a heat exchanger.

File size: 9.89 MB Download

Intercomparison of sandboxes used for testing joints for district heating pipes (NT TR 495)

NT TR 495

  • An intercomparison has been carried out between 3 laboratories concerning a type test for joints according to EN489 District heating pipes – Pre-insulated bonded pipe systems for directly buried hot water networks - Joint assembly for steel service pipes, polyurethane thermal insulation and outer casing of polyethylene.


Nordtest is a trademark of Nordic cooperation in conformity assessment. The emphasis of Nordtest is to develop, promote and innovate Nordic test methods and pre-normative activity. Nordtest endeavours to remove technical barriers to trade and promotes the concept: “Approved once, accepted everywhere”.