EN 15316–3 (heat., DHW & cool., distr..systems)
Energy performance of buildings – Method for calculation of system energy requirements and system efficiencies – Part 3: Space distribution systems (DHW, heating and cooling), Module M3–6, M4–6, M8–6
CEN is planning to adopt the more recent ISO 52032-1 as EN ISO standard, to supersede EN 15316-3