Items tagged with HEATING PLANTS Files

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Heating plants, small primary: Annual efficiency (NT VVS 107

NT VVS 107

  • This Nordtest method shows a test and calculation model for the assessment and comparison of annual efficiencies of small primary heating plants, especially non-condensing oil or gas fired boilers for central heating plants in one or two-family houses.


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”.